#   Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from __future__ import annotations

import builtins
import math
import numbers
import re
import warnings
from typing import TYPE_CHECKING, overload

import numpy as np

import paddle
from paddle import _C_ops
from paddle._C_ops import tril, triu  # noqa: F401
from paddle.utils import deprecated
from paddle.utils.decorator_utils import (
    ParamAliasDecorator,
    param_one_alias,
    param_two_alias,
    size_args_decorator,
)
from paddle.utils.inplace_utils import inplace_apis_in_dygraph_only

from ..base.data_feeder import (
    check_dtype,
    check_type,
    check_variable_and_dtype,
    convert_dtype,
)
from ..base.framework import Variable, device_guard
from ..base.param_attr import ParamAttr
from ..framework import (
    LayerHelper,
    _current_expected_place,
    _current_expected_place_,
    _get_paddle_place,
    convert_np_dtype_to_dtype_,
    core,
    dygraph_only,
    in_dynamic_mode,
    in_dynamic_or_pir_mode,
    in_pir_mode,
)

if TYPE_CHECKING:
    from collections.abc import Sequence

    from paddle._typing import (
        DTypeLike,
        NestedNumericSequence,
        Numeric,
        ParamAttrLike,
        PlaceLike,
        ShapeLike,
        TensorLike,
    )

__all__ = []

_warned_in_tensor = False


def _complex_to_real_dtype(dtype: DTypeLike) -> DTypeLike:
    if dtype == core.VarDesc.VarType.COMPLEX64:
        return core.VarDesc.VarType.FP32
    elif dtype == core.VarDesc.VarType.COMPLEX128:
        return core.VarDesc.VarType.FP64
    elif dtype == paddle.pir.core.DataType.COMPLEX64:
        return paddle.pir.core.DataType.FLOAT32
    elif dtype == paddle.pir.core.DataType.COMPLEX128:
        return paddle.pir.core.DataType.FLOAT64
    else:
        return dtype


def _real_to_complex_dtype(dtype: DTypeLike) -> DTypeLike:
    if dtype == core.VarDesc.VarType.FP32:
        return core.VarDesc.VarType.COMPLEX64
    elif dtype == core.VarDesc.VarType.FP64:
        return core.VarDesc.VarType.COMPLEX128
    elif dtype == paddle.pir.core.DataType.FLOAT32:
        return paddle.pir.core.DataType.COMPLEX64
    elif dtype == paddle.pir.core.DataType.FLOAT64:
        return paddle.pir.core.DataType.COMPLEX128
    else:
        return dtype


def create_global_var(
    shape: ShapeLike,
    value: float,
    dtype: DTypeLike,
    persistable: bool = False,
    force_cpu: bool = False,
    name: str | None = None,
) -> paddle.Tensor:
    """
    This function creates a new tensor variable with value in the global block(block 0).

    Args:
        shape (list[int]|tuple[int]): Shape of the variable
        value (float): The value of the variable. The new created
                      variable will be filled with it.
        dtype (str): Data type of the variable
        persistable (bool, optional): If this variable is persistable.
                           Default: False
        force_cpu (bool, optional): Force this variable to be on CPU.
                         Default: False
        name (str|None, optional): For detailed information, please refer to
           :ref:`api_guide_Name` . Usually name is no need to set and None by default.

    Returns:
        Variable: The created Variable

    Examples:
        .. code-block:: python

            >>> import paddle
            >>> paddle.enable_static()
            >>> var = paddle.static.create_global_var(shape=[2,3], value=1.0, dtype='float32',
            ...                                persistable=True, force_cpu=True, name='new_var')
    """
    check_type(shape, 'shape', (list, tuple, np.ndarray), 'create_global_var')
    for item in shape:
        check_type(
            item,
            'item of shape',
            (
                int,
                np.uint8,
                np.int8,
                np.int16,
                np.int32,
                np.int64,
            ),
            'create_global_var',
        )

    check_dtype(
        dtype,
        'dtype',
        [
            'bool',
            'float16',
            'float32',
            'float64',
            'int8',
            'int16',
            'int32',
            'int64',
            'uint8',
            'uint16',
        ],
        'create_global_var',
    )

    helper = LayerHelper("global_var", **locals())
    var = helper.create_global_variable(
        dtype=dtype,
        shape=shape,
        persistable=persistable,
        name=name,
        stop_gradient=True,
    )
    helper.set_variable_initializer(
        var,
        initializer=paddle.nn.initializer.ConstantInitializer(
            value=float(value), force_cpu=force_cpu
        ),
    )

    return var


def create_parameter(
    shape: ShapeLike,
    dtype: DTypeLike,
    name: str | None = None,
    attr: ParamAttrLike | None = None,
    is_bias: bool = False,
    default_initializer: paddle.nn.initializer.Initializer | None = None,
) -> paddle.Tensor:
    """
    This function creates a parameter. The parameter is a learnable variable, which can have
    gradient, and can be optimized.

    Note:
        This is a very low-level API. This API is useful when you create operator by your self, instead of using layers.

    Args:
        shape (list of int): Shape of the parameter
        dtype (str): Data type of the parameter. It can be set as 'float16', 'float32', 'float64'.
        name(str|None, optional): For detailed information, please refer to
           :ref:`api_guide_Name` . Usually name is no need to set and None by default.
        attr (ParamAttr|None, optional): Attribute object of the specified argument. For detailed information, please refer to
           :ref:`api_paddle_ParamAttr` None by default, which means that ParamAttr will be initialized as it is.
        is_bias (bool, optional): This can affect which default initializer is chosen
                       when default_initializer is None. If is_bias,
                       initializer.Constant(0.0) will be used. Otherwise,
                       Xavier() will be used.
        default_initializer (Initializer|None, optional): Initializer for the parameter

    Returns:
        The created parameter.

    Examples:
        .. code-block:: python

            >>> import paddle
            >>> paddle.enable_static()
            >>> W = paddle.create_parameter(shape=[784, 200], dtype='float32')
    """
    check_type(shape, 'shape', (list, tuple, np.ndarray), 'create_parameter')
    for item in shape:
        check_type(
            item,
            'item of shape',
            (
                int,
                np.uint8,
                np.int8,
                np.int16,
                np.int32,
                np.int64,
            ),
            'create_parameter',
        )

    check_dtype(
        dtype,
        'dtype',
        [
            'bool',
            'float16',
            'uint16',
            'float32',
            'float64',
            'int8',
            'int16',
            'int32',
            'int64',
            'uint8',
        ],
        'create_parameter',
    )
    check_type(attr, 'attr', (type(None), ParamAttr), 'create_parameter')
    check_type(
        default_initializer,
        'default_initializer',
        (type(None), paddle.nn.initializer.Initializer),
        'create_parameter',
    )

    helper = LayerHelper("create_parameter", **locals())
    if attr is None:
        attr = ParamAttr(name=name)
    return helper.create_parameter(
        attr, shape, convert_dtype(dtype), is_bias, default_initializer
    )


def create_tensor(
    dtype: DTypeLike, name: str | None = None, persistable: bool = False
) -> paddle.Tensor:
    """
    Create a variable, which will hold a Tensor with data type dtype.

    Args:
        dtype(string|numpy.dtype): the data type of Tensor to be created, the
            data type is bool, float16, float32, float64, int8, int16, int32 and int64.
        name(string, optional): The default value is None.  Normally there is no need for
            user to set this property.  For more information, please refer to :ref:`api_guide_Name`
        persistable(bool): Set the persistable flag of the create tensor.
            default value is False.

    Returns:
        Variable: The tensor to be created according to dtype.

    Examples:
        .. code-block:: python

            >>> import paddle
            >>> tensor = paddle.tensor.create_tensor(dtype='float32')
    """
    check_dtype(
        dtype,
        'dtype',
        [
            'bool',
            'float16',
            'float32',
            'float64',
            'int8',
            'int32',
            'int32',
            'int64',
        ],
        'create_tensor',
    )
    helper = LayerHelper("create_tensor", **locals())
    return helper.create_variable(
        name=helper.name, dtype=dtype, persistable=persistable
    )


def linspace(
    start: float | paddle.Tensor,
    stop: float | paddle.Tensor,
    num: int | paddle.Tensor,
    dtype: DTypeLike | None = None,
    name: str | None = None,
) -> paddle.Tensor:
    r"""
    Return fixed number of evenly spaced values within a given interval. Note: no gradient calculation is performed.

    Args:
        start(int|float|Tensor): The input :attr:`start` is start of range. It is a int, float, \
            or a 0-D Tensor with data type int32, int64, float32 or float64.
        stop(int|float|Tensor): The input :attr:`stop` is end of range. It is a int, float, \
            or a 0-D Tensor with data type int32, int64, float32 or float64.
        num(int|Tensor): The input :attr:`num` is given num of the sequence. It is an int, \
            or a 0-D Tensor with data type int32.
        dtype(str|paddle.dtype|np.dtype|None, optional): The data type of output tensor, it could be
            int32, int64, float32 and float64. Default: if None, the data type is float32.
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.

    Returns:
        Tensor: the output data type will be float32, float64. The 1-D tensor with fixed number of evenly spaced values, \
        the data shape of this tensor is :math:`[num]` . If the :attr:`num` is set 1, the output tensor just has \
        the value with input :attr:`start`.

    Examples:
        .. code-block:: python

            >>> import paddle
            >>> data = paddle.linspace(0, 10, 5, 'float32')
            >>> print(data.numpy())
            [0. 2.5 5. 7.5 10.]
            >>> data = paddle.linspace(0, 10, 1, 'float32')
            >>> print(data.numpy())
            [0.]

    """
    if dtype is None:
        dtype = paddle.get_default_dtype()
    tensor_num = num
    tensor_start = start
    tensor_stop = stop
    if not isinstance(num, (Variable, paddle.pir.Value)):
        check_type(num, 'num', (int), 'linspace')
    if not isinstance(dtype, (core.VarDesc.VarType, paddle.pir.core.DataType)):
        dtype = convert_np_dtype_to_dtype_(dtype)
    if not isinstance(start, (Variable, paddle.pir.Value)):
        with device_guard("cpu"):
            tensor_start = fill_constant([1], dtype, start, force_cpu=True)
    if not isinstance(stop, (Variable, paddle.pir.Value)):
        with device_guard("cpu"):
            tensor_stop = fill_constant([1], dtype, stop, force_cpu=True)
    if not isinstance(num, (Variable, paddle.pir.Value)):
        with device_guard("cpu"):
            tensor_num = fill_constant([1], 'int32', num, force_cpu=True)
    if in_dynamic_mode():
        return _C_ops.linspace(
            tensor_start,
            tensor_stop,
            tensor_num,
            dtype,
            _current_expected_place(),
        )
    elif in_pir_mode():
        helper = LayerHelper("linspace", **locals())

        start_dtype = convert_dtype(tensor_start.dtype)
        stop_dtype = convert_dtype(tensor_stop.dtype)
        out_dtype = convert_dtype(dtype)
        if isinstance(start, paddle.pir.Value):
            check_dtype(
                start.dtype,
                'start',
                ['float16', 'uint16', 'float32', 'float64', 'int32', 'int64'],
                'linspace',
            )
        else:
            check_type(start, 'start', (int, float), 'linspace')

        if isinstance(stop, paddle.pir.Value):
            check_dtype(
                stop.dtype,
                'stop',
                ['float16', 'uint16', 'float32', 'float64', 'int32', 'int64'],
                'linspace',
            )
        else:
            check_type(stop, 'stop', (int, float), 'linspace')
        if isinstance(num, paddle.pir.Value):
            check_dtype(num.dtype, 'num', ['int32', 'int64'], 'linspace')
        check_dtype(
            dtype,
            'dtype',
            ['float16', 'uint16', 'float32', 'float64', 'int32', 'int64'],
            'linspace',
        )
        if (
            (stop_dtype == "float64" or start_dtype == "float64")
            and out_dtype in ["float32", "int32"]
        ) or (
            (stop_dtype == "int64" or start_dtype == "int64")
            and out_dtype == "int32"
        ):
            raise ValueError(
                f"The dtype of start/stop is {start_dtype}/{stop_dtype} but the attr(dtype) of linspace is {dtype}, "
                "which may cause data type overflows. Please reset attr(dtype) of linspace."
            )
        if isinstance(dtype, paddle.base.core.VarDesc.VarType):
            dtype = paddle.pir.core.vartype_to_datatype[dtype]

        return _C_ops.linspace(
            tensor_start,
            tensor_stop,
            tensor_num,
            dtype,
            _current_expected_place(),
        )
    else:
        helper = LayerHelper("linspace", **locals())

        start_dtype = convert_dtype(tensor_start.dtype)
        stop_dtype = convert_dtype(tensor_stop.dtype)
        out_dtype = convert_dtype(dtype)
        if isinstance(start, Variable):
            check_dtype(
                start.dtype,
                'start',
                ['float16', 'uint16', 'float32', 'float64', 'int32', 'int64'],
                'linspace',
            )
        else:
            check_type(start, 'start', (int, float), 'linspace')

        if isinstance(stop, Variable):
            check_dtype(
                stop.dtype,
                'stop',
                ['float16', 'uint16', 'float32', 'float64', 'int32', 'int64'],
                'linspace',
            )
        else:
            check_type(stop, 'stop', (int, float), 'linspace')
        if isinstance(num, Variable):
            check_dtype(num.dtype, 'num', ['int32'], 'linspace')
        check_dtype(
            dtype,
            'dtype',
            ['float16', 'uint16', 'float32', 'float64', 'int32', 'int64'],
            'linspace',
        )
        if (
            (stop_dtype == "float64" or start_dtype == "float64")
            and out_dtype in ["float32", "int32"]
        ) or (
            (stop_dtype == "int64" or start_dtype == "int64")
            and out_dtype == "int32"
        ):
            raise ValueError(
                f"The dtype of start/stop is {start_dtype}/{stop_dtype} but the attr(dtype) of linspace is {dtype}, "
                "which may cause data type overflows. Please reset attr(dtype) of linspace."
            )

        out = helper.create_variable_for_type_inference(dtype=dtype)

        helper.append_op(
            type='linspace',
            inputs={
                'Start': tensor_start,
                'Stop': tensor_stop,
                'Num': tensor_num,
            },
            attrs={'dtype': dtype},
            outputs={'Out': [out]},
        )
        if isinstance(num, int):
            out.desc.set_shape((num,))
        return out


def logspace(
    start: float | paddle.Tensor,
    stop: float | paddle.Tensor,
    num: int | paddle.Tensor,
    base: float | paddle.Tensor = 10.0,
    dtype: DTypeLike | None = None,
    name: str | None = None,
) -> paddle.Tensor:
    r"""
    Return fixed number of logarithmically-evenly spaced values within the interval \
    :math:`[base^{start}, base^{stop}]`.

    Notes:
        This API does not compute the gradient.

    Args:
        start(int|float|Tensor): The input :attr:`start` is exponent of first entry in \
            the sequence. It is a scalar, or a 0-D Tensor of shape [] with input data \
            type int32, int64, float32 or float64.
        stop(int|float|Tensor): The input :attr:`stop` is exponent of last entry in the \
            sequence. It is a scalar, or a 0-D Tensor of shape [] with input data \
            type int32, int64, float32 or float64.
        num(int|Tensor): The input :attr:`num` is given number of items in the sequence. \
            It is an int scalar, or a 0-D Tensor of shape [] with data type int32.
        base(int|float|Tensor): The input :attr:`base` is base of the logarithm function. \
            It is a scalar, or a 0-D Tensor of shape [] with input data type int32, int64, \
            float32 or float64.
        dtype(np.dtype|str, optional): The data type of output tensor, it could be \
            int32, int64, float32 or float64. Default: if None, the data type is float32. \
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.

    Returns:
        Tensor: The output data type will be float32, float64. The 1-D tensor with \
        fixed number of logarithmically-evenly spaced values, the data shape of this \
        tensor is :math:`[num]`. If the :attr:`num` is set 1, the output tensor \
        just has the value with exponential of :attr:`start` with base :attr:`base`.

    Examples:
        .. code-block:: python

            >>> import paddle
            >>> data = paddle.logspace(0, 10, 5, 2, 'float32')
            >>> print(data.numpy())
            [1.0000000e+00 5.6568542e+00 3.2000000e+01 1.8101933e+02 1.0240000e+03]
            >>> data = paddle.logspace(0, 10, 1, 2, 'float32')
            >>> print(data.numpy())
            [1.]
    """
    if dtype is None:
        dtype = paddle.get_default_dtype()
    tensor_num = num
    tensor_start = start
    tensor_stop = stop
    tensor_base = base
    if not isinstance(num, (Variable, paddle.pir.Value)):
        check_type(num, 'num', (int), 'logspace')
    if not isinstance(dtype, (core.VarDesc.VarType, core.DataType)):
        dtype = convert_np_dtype_to_dtype_(dtype)
    if not isinstance(start, (Variable, paddle.pir.Value)):
        with device_guard("cpu"):
            tensor_start = fill_constant([1], dtype, start)
    if not isinstance(stop, (Variable, paddle.pir.Value)):
        with device_guard("cpu"):
            tensor_stop = fill_constant([1], dtype, stop)
    if not isinstance(num, (Variable, paddle.pir.Value)):
        with device_guard("cpu"):
            tensor_num = fill_constant([1], 'int32', num)
    if not isinstance(base, (Variable, paddle.pir.Value)):
        with device_guard("cpu"):
            tensor_base = fill_constant([1], dtype, base)
    if in_dynamic_mode():
        return _C_ops.logspace(
            tensor_start,
            tensor_stop,
            tensor_num,
            tensor_base,
            dtype,
            _current_expected_place(),
        )
    elif in_pir_mode():
        start_dtype = convert_dtype(tensor_start.dtype)
        stop_dtype = convert_dtype(tensor_stop.dtype)
        base_dtype = convert_dtype(tensor_base.dtype)
        out_dtype = convert_dtype(dtype)
        if (
            (
                stop_dtype == "float64"
                or start_dtype == "float64"
                or base_dtype == "float64"
            )
            and out_dtype in ["float32", "int32"]
        ) or (
            (
                stop_dtype == "int64"
                or start_dtype == "int64"
                or base_dtype == "int64"
            )
            and out_dtype == "int32"
        ):
            raise ValueError(
                f"The dtype of start/stop/base is {start_dtype}/{stop_dtype}/{base_dtype} but the attr(dtype) of logspace is {dtype}, "
                "which may cause data type overflows. Please reset attr(dtype) of logspace."
            )
        if isinstance(num, paddle.pir.Value):
            check_dtype(num.dtype, 'num', ['int32'], 'logspace')

        return _C_ops.logspace(
            tensor_start,
            tensor_stop,
            tensor_num,
            tensor_base,
            dtype,
            _current_expected_place(),
        )
    else:
        helper = LayerHelper("logspace", **locals())

        start_dtype = convert_dtype(tensor_start.dtype)
        stop_dtype = convert_dtype(tensor_stop.dtype)
        base_dtype = convert_dtype(tensor_base.dtype)
        out_dtype = convert_dtype(dtype)
        if isinstance(start, Variable):
            check_dtype(
                start.dtype,
                'start',
                ['float32', 'float64', 'int32', 'int64'],
                'logspace',
            )
        else:
            check_type(start, 'start', (int, float), 'logspace')

        if isinstance(stop, Variable):
            check_dtype(
                stop.dtype,
                'stop',
                ['float32', 'float64', 'int32', 'int64'],
                'logspace',
            )
        else:
            check_type(stop, 'stop', (int, float), 'logspace')

        if isinstance(num, Variable):
            check_dtype(num.dtype, 'num', ['int32'], 'logspace')

        if isinstance(base, Variable):
            check_dtype(
                base.dtype,
                'base',
                ['float32', 'float64', 'int32', 'int64'],
                'logspace',
            )
        else:
            check_type(base, 'base', (int, float), 'logspace')

        check_dtype(
            dtype, 'dtype', ['int32', 'int64', 'float32', 'float64'], 'logspace'
        )
        if (
            (
                stop_dtype == "float64"
                or start_dtype == "float64"
                or base_dtype == "float64"
            )
            and out_dtype in ["float32", "int32"]
        ) or (
            (
                stop_dtype == "int64"
                or start_dtype == "int64"
                or base_dtype == "int64"
            )
            and out_dtype == "int32"
        ):
            raise ValueError(
                f"The dtype of start/stop/base is {start_dtype}/{stop_dtype}/{base_dtype} but the attr(dtype) of logspace is {dtype}, "
                "which may cause data type overflows. Please reset attr(dtype) of logspace."
            )

        out = helper.create_variable_for_type_inference(dtype=dtype)

        helper.append_op(
            type='logspace',
            inputs={
                'Start': tensor_start,
                'Stop': tensor_stop,
                'Num': tensor_num,
                'Base': tensor_base,
            },
            attrs={'dtype': dtype},
            outputs={'Out': [out]},
        )
        if isinstance(num, int):
            out.desc.set_shape((num,))
        return out


def _to_tensor_non_static(
    data: TensorLike,
    dtype: DTypeLike | None = None,
    place: PlaceLike | None = None,
    stop_gradient: bool = True,
) -> paddle.Tensor:
    def _handle_tensor_dtype(
        tensor: paddle.Tensor, dtype: DTypeLike
    ) -> paddle.Tensor:
        if dtype:
            if convert_dtype(dtype) != convert_dtype(tensor.dtype):
                return tensor.astype(convert_dtype(dtype))
        return tensor

    if isinstance(data, np.number):  # Special case for numpy scalars
        data = np.array(data)

    if not isinstance(data, np.ndarray):
        if np.isscalar(data) and not isinstance(data, str):
            data = np.array(data)
        elif isinstance(data, (list, tuple)):
            has_tensor = False
            for d in data:
                if isinstance(d, paddle.Tensor):
                    has_tensor = True
                    break
            if has_tensor:
                if (
                    len(data) == 1
                    and isinstance(data[0], paddle.Tensor)
                    and data[0].dtype == paddle.bfloat16
                ):
                    data = np.array([data[0].numpy()])
                else:
                    data = np.array(data)
                if not dtype:
                    dtype = data.dtype
            else:
                data = np.array(data)
            if data.dtype == np.object_:
                raise ValueError(
                    "\n\tFailed to convert input data to a regular ndarray :\n\t - Usually "
                    "this means the input data contains nested lists with different lengths. "
                )
        elif isinstance(data, paddle.Tensor):
            data = data._copy_to(place, False)
            data = _handle_tensor_dtype(data, dtype)
            data.stop_gradient = stop_gradient
            return data
        elif isinstance(data, core.DenseTensor):
            # shouldn't expose it to users, just for internal use.
            # convert core.DenseTensor to Tensor first
            # Currently, there is no copy when places are same
            data = paddle.Tensor(data, place=place)
            data = _handle_tensor_dtype(data, dtype)
            data.stop_gradient = stop_gradient
            return data
        else:
            raise TypeError(
                f"Can't constructs a 'paddle.Tensor' with data type {type(data)}, data type must be scalar|list|tuple|np.ndarray|paddle.Tensor"
            )
        if not dtype:
            if data.dtype in [
                'float16',
                'float32',
                'float64',
                'complex64',
                'complex128',
            ]:
                default_type = paddle.get_default_dtype()
                if np.iscomplexobj(data):
                    default_type = (
                        'complex64'
                        if default_type in ['float16', 'float32']
                        else 'complex128'
                    )
                if convert_dtype(default_type) != convert_dtype(data.dtype):
                    dtype = default_type
            # Windows default type is 'int32', while Linux/Mac is 'int64'. Unify they.
            if data.dtype in ['int32']:
                data = data.astype("int64")

    if dtype and convert_dtype(dtype) != convert_dtype(data.dtype):
        if convert_dtype(dtype) == 'uint16':
            tensor = core.eager.Tensor(
                value=data,
                place=place,
                persistable=False,
                zero_copy=False,
                name=None,
                stop_gradient=True,
            )
            tensor = tensor.astype(dtype)
            tensor.stop_gradient = stop_gradient
            return tensor
        else:
            data = data.astype(convert_dtype(dtype))

    if isinstance(data, np.ndarray):
        if (
            data.dtype
            in [
                np.float32,
                np.float64,
                np.int32,
                np.int64,
                np.complex64,
                np.complex128,
            ]
            and data.size == 1
            and (
                isinstance(place, core.CUDAPlace)
                or (isinstance(place, core.Place) and place.is_gpu_place())
            )
        ):
            ret = paddle.full(data.shape, data.reshape([1])[0], data.dtype)
            ret.stop_gradient = stop_gradient
            return ret
        else:
            return core.eager.Tensor(
                value=data,
                place=place,
                persistable=False,
                zero_copy=False,
                name=None,
                stop_gradient=stop_gradient,
            )
    else:
        return paddle.Tensor(
            value=data,
            place=place,
            persistable=False,
            zero_copy=False,
            stop_gradient=stop_gradient,
        )


def _to_tensor_static(
    data: TensorLike,
    dtype: DTypeLike | None = None,
    stop_gradient: bool = True,
) -> paddle.Tensor:
    if isinstance(data, (Variable, paddle.pir.Value)):
        output = data
        if dtype is not None and dtype != data.dtype:
            output = paddle.cast(output, dtype)

    else:
        if isinstance(data, np.number):  # Special case for numpy scalars
            data = np.array(data)

        if not isinstance(data, np.ndarray):
            if np.isscalar(data) and not isinstance(data, str):
                data = np.array(data)
            elif isinstance(data, (list, tuple)):
                try:
                    '''
                    In numpy version >= 1.24.0, case like:
                        np.array([Variable, 1, 2])
                    is not supported, it will raise error (numpy returns an numpy array with dtype='object' in version <= 1.23.5)

                    Thus, process nested structure in except block
                    '''
                    array_data = np.array(data)

                    # for numpy version <= 1.23.5
                    if array_data.dtype == 'object':
                        raise RuntimeError("Numpy get dtype `object`.")

                    data = array_data

                except:
                    to_stack_list = [None] * len(data)
                    for idx, d in enumerate(data):
                        to_stack_list[idx] = _to_tensor_static(
                            d, dtype, stop_gradient
                        )
                    data = paddle.stack(to_stack_list)
            else:
                raise RuntimeError(
                    f"Do not support transform type `{type(data)}` to tensor"
                )

            # fix numpy default dtype
            if data.dtype in ['float16', 'float32', 'float64']:
                data = data.astype(paddle.get_default_dtype())
            # Windows default type is 'int32', while Linux/Mac is 'int64'. Unify they.
            elif data.dtype in ['int32']:
                data = data.astype("int64")

        if dtype:
            target_dtype = dtype
        elif hasattr(data, 'dtype') and data.dtype != 'object':
            target_dtype = data.dtype
        else:
            target_dtype = paddle.get_default_dtype()
        target_dtype = convert_dtype(target_dtype)

        if data.dtype == "int16":
            data = data.astype("int32")
        output = assign(data)

        if convert_dtype(output.dtype) != target_dtype:
            output = paddle.cast(output, target_dtype)

    output.stop_gradient = stop_gradient

    return output


def tensor(
    data: TensorLike | NestedNumericSequence,
    dtype: DTypeLike | None = None,
    device: PlaceLike | None = None,
    requires_grad: bool = False,
    pin_memory: bool = False,
) -> paddle.Tensor:
    r"""
    Constructs a ``paddle.Tensor`` from ``data`` ,
    which can be scalar, tuple, list, numpy\.ndarray, paddle\.Tensor.

    If the ``data`` is already a Tensor, copy will be performed and return a new tensor.
    If you only want to change stop_gradient property, please call ``Tensor.stop_gradient = stop_gradient`` directly.

    .. code-block:: text

        We use the dtype conversion rules following this:
                Keep dtype
        np.number ───────────► paddle.Tensor
                                (0-D Tensor)
                    default_dtype
        Python Number ───────────────► paddle.Tensor
                                        (0-D Tensor)
                    Keep dtype
        np.ndarray ───────────► paddle.Tensor

    Args:
        data(scalar|tuple|list|ndarray|Tensor): Initial data for the tensor.
            Can be a scalar, list, tuple, numpy\.ndarray, paddle\.Tensor.
        dtype(str|np.dtype, optional): The desired data type of returned tensor. Can be 'bool' , 'float16' ,
            'float32' , 'float64' , 'int8' , 'int16' , 'int32' , 'int64' , 'uint8',
            'complex64' , 'complex128'. Default: None, infers dtype from ``data``
            except for python float number which gets dtype from ``get_default_type`` .
        device(CPUPlace|CUDAPinnedPlace|CUDAPlace|str, optional): The place to allocate Tensor. Can be
            CPUPlace, CUDAPinnedPlace, CUDAPlace. Default: None, means global place. If ``device`` is
            string, It can be ``cpu``, ``gpu:x`` and ``gpu_pinned``, where ``x`` is the index of the GPUs.
        requires_grad(bool, optional): Whether to block the gradient propagation of Autograd. Default: False.
        pin_memory(bool, optional): If set, return tensor would be allocated in the pinned memory. Works only for CPU tensors. Default: False

    Returns:
        Tensor: A Tensor constructed from ``data`` .

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> type(paddle.tensor(1))
            <class 'paddle.Tensor'>

            >>> paddle.tensor(1)
            Tensor(shape=[], dtype=int64, place=Place(cpu), stop_gradient=True,
            1)

            >>> x = paddle.tensor(1, requires_grad=True)
            >>> print(x)
            Tensor(shape=[], dtype=int64, place=Place(cpu), stop_gradient=False,
            1)

            >>> paddle.tensor(x)  # A new tensor will be created with default stop_gradient=True
            Tensor(shape=[], dtype=int64, place=Place(cpu), stop_gradient=True,
            1)

            >>> paddle.tensor([[0.1, 0.2], [0.3, 0.4]], device=paddle.CPUPlace(), requires_grad=True)
            Tensor(shape=[2, 2], dtype=float32, place=Place(cpu), stop_gradient=False,
            [[0.10000000, 0.20000000],
             [0.30000001, 0.40000001]])

            >>> type(paddle.tensor([[1+1j, 2], [3+2j, 4]], dtype='complex64'))
            <class 'paddle.Tensor'>

            >>> paddle.tensor([[1+1j, 2], [3+2j, 4]], dtype='complex64')
            Tensor(shape=[2, 2], dtype=complex64, place=Place(cpu), stop_gradient=True,
            [[(1+1j), (2+0j)],
             [(3+2j), (4+0j)]])
    """
    stop_gradient = not requires_grad
    place = _get_paddle_place(device)
    if place is None:
        place = _current_expected_place_()
    if pin_memory and not isinstance(
        place, (core.CUDAPinnedPlace, core.XPUPinnedPlace)
    ):
        if isinstance(place, core.CUDAPlace):
            place = core.CUDAPinnedPlace()
        elif isinstance(place, core.XPUPlace):
            place = core.XPUPinnedPlace()
        else:
            raise RuntimeError(f"Pinning memory is not supported for {place}.")

    if in_dynamic_mode():
        is_tensor = paddle.is_tensor(data)
        if not is_tensor and hasattr(data, "__cuda_array_interface__"):
            if not core.is_compiled_with_cuda():
                raise RuntimeError(
                    "PaddlePaddle is not compiled with CUDA, but trying to create a Tensor from a CUDA array."
                )
            tensor = core.tensor_from_cuda_array_interface(data)
            if pin_memory:
                tensor = tensor.pin_memory()
        else:
            if is_tensor:
                global _warned_in_tensor
                if not _warned_in_tensor:
                    warnings.warn(
                        "To copy construct from a tensor, it is recommended to use sourceTensor.clone().detach(), "
                        "rather than paddle.to_tensor(sourceTensor).",
                        stacklevel=2,
                    )
                    _warned_in_tensor = True
            tensor = _to_tensor_non_static(data, dtype, place, stop_gradient)
        return tensor
    # call assign for static graph
    else:
        re_exp = re.compile(r'[(](.+?)[)]', re.DOTALL)
        place_str = re.findall(re_exp, str(place))[0]
        with paddle.static.device_guard(place_str):
            tensor = _to_tensor_static(data, dtype, stop_gradient)
            return tensor


def to_tensor(
    data: TensorLike | NestedNumericSequence,
    dtype: DTypeLike | None = None,
    place: PlaceLike | None = None,
    stop_gradient: bool = True,
) -> paddle.Tensor:
    r"""
    Constructs a ``paddle.Tensor`` from ``data`` ,
    which can be scalar, tuple, list, numpy\.ndarray, paddle\.Tensor.

    If the ``data`` is already a Tensor, copy will be performed and return a new tensor.
    If you only want to change stop_gradient property, please call ``Tensor.stop_gradient = stop_gradient`` directly.

    .. note::
    Alias Support: The parameter name ``device`` can be used as an alias for ``place``.
    For example, ``device=paddle.CUDAPlace(0)`` is equivalent to ``place=paddle.CUDAPlace(0)``.

    .. code-block:: text

        We use the dtype conversion rules following this:
                Keep dtype
        np.number ───────────► paddle.Tensor
                                (0-D Tensor)
                    default_dtype
        Python Number ───────────────► paddle.Tensor
                                        (0-D Tensor)
                    Keep dtype
        np.ndarray ───────────► paddle.Tensor

    Args:
        data(scalar|tuple|list|ndarray|Tensor): Initial data for the tensor.
            Can be a scalar, list, tuple, numpy\.ndarray, paddle\.Tensor.
        dtype(str|np.dtype, optional): The desired data type of returned tensor. Can be 'bool' , 'float16' ,
            'float32' , 'float64' , 'int8' , 'int16' , 'int32' , 'int64' , 'uint8',
            'complex64' , 'complex128'. Default: None, infers dtype from ``data``
            except for python float number which gets dtype from ``get_default_type`` .
        place(CPUPlace|CUDAPinnedPlace|CUDAPlace|str, optional): The place to allocate Tensor. Can be
            CPUPlace, CUDAPinnedPlace, CUDAPlace. Default: None, means global place. If ``place`` is
            string, It can be ``cpu``, ``gpu:x`` and ``gpu_pinned``, where ``x`` is the index of the GPUs.
        device: An alias for ``place`` , with identical behavior.
        stop_gradient(bool, optional): Whether to block the gradient propagation of Autograd. Default: True.

    Returns:
        Tensor: A Tensor constructed from ``data`` .

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> type(paddle.to_tensor(1))
            <class 'paddle.Tensor'>

            >>> paddle.to_tensor(1)
            Tensor(shape=[], dtype=int64, place=Place(cpu), stop_gradient=True,
            1)

            >>> x = paddle.to_tensor(1, stop_gradient=False)
            >>> print(x)
            Tensor(shape=[], dtype=int64, place=Place(cpu), stop_gradient=False,
            1)

            >>> paddle.to_tensor(x)  # A new tensor will be created with default stop_gradient=True
            Tensor(shape=[], dtype=int64, place=Place(cpu), stop_gradient=True,
            1)

            >>> paddle.to_tensor([[0.1, 0.2], [0.3, 0.4]], place=paddle.CPUPlace(), stop_gradient=False)
            Tensor(shape=[2, 2], dtype=float32, place=Place(cpu), stop_gradient=False,
            [[0.10000000, 0.20000000],
             [0.30000001, 0.40000001]])

            >>> type(paddle.to_tensor([[1+1j, 2], [3+2j, 4]], dtype='complex64'))
            <class 'paddle.Tensor'>

            >>> paddle.to_tensor([[1+1j, 2], [3+2j, 4]], dtype='complex64')
            Tensor(shape=[2, 2], dtype=complex64, place=Place(cpu), stop_gradient=True,
            [[(1+1j), (2+0j)],
             [(3+2j), (4+0j)]])
    """
    return tensor(
        data, dtype=dtype, device=place, requires_grad=not stop_gradient
    )


class MmapStorage(paddle.base.core.MmapStorage):
    """
    This class will use mmap to load a file.

    Args:
        filename(str): the name of .safetensors file.
        nbytes(int): number of bytes to map into memory.

    Examples:
        .. code-block:: python

            >>> import paddle
            >>> shape = [4,5]
            >>> dtype = paddle.float32
            >>> a = paddle.arange(4*5).reshape(shape).astype(dtype)
            >>> a.numpy().tofile("test.pp")
            >>> size = a.size * a.element_size()
            >>> t = paddle.MmapStorage("test.pp", size)
            >>> t.get_slice(dtype = dtype, start = 0, stop = a.size).reshape(shape)
            Tensor(shape=[4, 5], dtype=float32, place=Place(cpu), stop_gradient=True,
                   [[0. , 1. , 2. , 3. , 4. ],
                    [5. , 6. , 7. , 8. , 9. ],
                    [10., 11., 12., 13., 14.],
                    [15., 16., 17., 18., 19.]])

    """

    def __init__(self, filename: str, nbytes: int):
        super().__init__(filename, nbytes)

    def get_slice(
        self,
        dtype: DTypeLike | None = "uint8",
        start: int = 0,
        stop: int = -1,
        step: int = 1,
    ) -> paddle.Tensor:
        """
        Slice the tensor from the mmapped file.
        Args:
            dtype (DTypeLike | None): The data type of the output tensor. Default: "uint8".
            start (int): The start index of the slice. Default: 0.
            stop (int): The end index of the slice. Default: -1.
            step (int): The step size of the slice. Default: 1.
        Returns:
            Tensor: The sliced tensor.
        """
        proto_dtype = paddle.base.framework.convert_to_proto_type(dtype)
        out: paddle.base.libpaddle.DenseTensor = super().get_slice(
            proto_dtype, start, stop, step
        )
        return out


@param_one_alias(["x", "input"])
def full_like(
    x: paddle.Tensor,
    fill_value: Numeric | str,
    dtype: DTypeLike | None = None,
    name: str | None = None,
    *,
    device: PlaceLike | None = None,
    requires_grad: bool = False,
    pin_memory: bool = False,
) -> paddle.Tensor:
    """

    This function creates a tensor filled with ``fill_value`` which has identical shape of ``x`` and ``dtype``.
    If the ``dtype`` is None, the data type of Tensor is same with ``x``.

    .. note::
        Alias Support: The parameter name ``input`` can be used as an alias for ``x``.
        For example, ``full_like(input=tensor_x, ...)`` is equivalent to ``full_like(x=tensor_x, ...)``.

    Args:
        x(Tensor): The input tensor which specifies shape and data type. The data type can be bool, float16, float32, float64, int32, int64.
            alias: ``input``.
        fill_value(Scalar|Tensor): The value to fill the tensor with. Note: this value shouldn't exceed the range of the output data type.
            If ``fill_value`` is an Tensor, it should be an 0-D Tensor which represents a scalar.
        dtype(np.dtype|str, optional): The data type of output. The data type can be one
            of bool, float16, float32, float64, int32, int64, complex64, complex128. The default value is None, which means the output
            data type is the same as input.
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.
        device(PlaceLike|None, optional): The desired device of returned tensor.
            if None, uses the current device for the default tensor type (see paddle.device.set_device()).
            device will be the CPU for CPU tensor types and the current CUDA device for CUDA tensor types. Default: None.
        requires_grad(bool, optional):  If autograd should record operations on the returned tensor. Default: False.
        pin_memory(bool, optional): If set, return tensor would be allocated in the pinned memory. Works only for CPU tensors. Default: False

    Returns:
        Tensor: Tensor which is created according to ``x``, ``fill_value`` and ``dtype``.

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> input = paddle.full(shape=[2, 3], fill_value=0.0, dtype='float32', name='input')
            >>> output = paddle.full_like(input, 2.0)
            >>> print(output.numpy())
            [[2. 2. 2.]
             [2. 2. 2.]]
    """
    # Include str type check to handle string numeric values like "0.5" that occur in CI tests.
    # The compatible method for fliud operators, may be it can be removed in the future.
    if not isinstance(
        fill_value,
        (numbers.Number, str, core.eager.Tensor, Variable, paddle.pir.Value),
    ):
        raise TypeError(
            f"The fill_value should be int, float, bool, complex, np.number, string numeric value or Tensor, but received {type(fill_value)}."
        )

    if dtype is None:
        dtype = x.dtype
    else:
        if not isinstance(dtype, (core.VarDesc.VarType, core.DataType)):
            dtype = convert_np_dtype_to_dtype_(dtype)
    if device is None:
        device = x.place

    if in_dynamic_or_pir_mode():
        device = (
            _get_paddle_place(device)
            if device is not None
            else _current_expected_place()
        )
        if (
            pin_memory
            and in_dynamic_mode()
            and device is not None
            and not isinstance(
                device, (core.CUDAPinnedPlace, core.XPUPinnedPlace)
            )
        ):
            if isinstance(device, core.CUDAPlace) or (
                isinstance(device, core.Place) and device.is_gpu_place()
            ):
                device = core.CUDAPinnedPlace()
            elif isinstance(device, core.XPUPlace) or (
                isinstance(device, core.Place) and device.is_xpu_place()
            ):
                device = core.XPUPinnedPlace()
            else:
                raise RuntimeError(
                    f"Pinning memory is not supported for {device}"
                )

        tensor = _C_ops.full_like(x, fill_value, dtype, device)
        if requires_grad is True:
            tensor.stop_gradient = False
        if pin_memory and in_dynamic_mode():
            tensor = tensor.pin_memory()
        return tensor
    else:
        helper = LayerHelper("full_like", **locals())
        check_variable_and_dtype(
            x,
            'x',
            [
                'bool',
                'float16',
                'float32',
                'float64',
                'int16',
                'int32',
                'int64',
                'uint16',
            ],
            'full_like',
        )
        check_dtype(
            dtype,
            'dtype',
            [
                'bool',
                'float16',
                'float32',
                'float64',
                'int16',
                'int32',
                'int64',
                'uint16',
            ],
            'full_like/zeros_like/ones_like',
        )
        out = helper.create_variable_for_type_inference(dtype=dtype)

        helper.append_op(
            type='fill_any_like',
            inputs={'X': [x]},
            attrs={'value': fill_value, "dtype": dtype},
            outputs={'Out': [out]},
        )
        out.stop_gradient = True
        return out


def fill_constant(
    shape: ShapeLike,
    dtype: DTypeLike,
    value: bool | float | paddle.Tensor,
    force_cpu: bool = False,
    out: paddle.Tensor | None = None,
    place: PlaceLike | None = None,
    name: str | None = None,
) -> paddle.Tensor:
    shape = [shape] if isinstance(shape, int) else shape
    if in_dynamic_or_pir_mode():
        if place is None:
            place = _current_expected_place()
        else:
            place = _get_paddle_place(place)

        if force_cpu:
            place = core.CPUPlace()

        if not isinstance(dtype, (core.VarDesc.VarType, core.DataType)):
            dtype = convert_np_dtype_to_dtype_(dtype)

        if in_pir_mode() and isinstance(dtype, core.VarDesc.VarType):
            dtype = paddle.pir.core.vartype_to_datatype[dtype]

        if in_dynamic_mode():
            if isinstance(shape, (list, tuple)):
                shape = paddle.utils.convert_shape_to_list(shape)
        else:
            paddle.utils.check_shape(shape)
            if isinstance(shape, (list, tuple)):
                if paddle.utils._contain_var(shape):
                    shape = paddle.utils.get_int_tensor_list(shape)
            elif isinstance(shape, paddle.pir.Value):
                pass
            else:
                raise TypeError("Shape only supports Value, or list, or tuple.")

        if out is None:
            out = _C_ops.full(shape, value, dtype, place)
            out.stop_gradient = True
            return out

        if out.dtype != dtype:
            raise TypeError(
                "Required out.dtype == dtype if specifying out, but received f{out.dtype} != f{dtype}"
            )
        out = _C_ops.full_(out, shape, value, dtype, place)
        out.stop_gradient = True
        return out

    else:
        attrs = {'force_cpu': force_cpu}
        dtype = convert_dtype(dtype)
        if not isinstance(value, Variable):
            if dtype in ['int8', 'uint8', 'int16', 'int32', 'int64']:
                attrs['str_value'] = str(int(value))
                attrs['value'] = int(value)
            else:
                attrs['str_value'] = str(float(value))
                attrs['value'] = float(value)

        helper = LayerHelper("fill_constant", **locals())
        inputs = {}
        if isinstance(value, Variable):
            if convert_dtype(value.dtype) != dtype:
                value = paddle.cast(value, dtype)
            inputs['ValueTensor'] = value

        paddle.utils.check_shape(shape)
        check_dtype(
            dtype,
            'dtype',
            [
                'bool',
                'float16',
                'float32',
                'float64',
                'int8',
                'uint8',
                'int16',
                'int32',
                'int64',
                'complex64',
                'complex128',
                'uint16',
                'float8_e4m3fn',
                'float8_e5m2',
            ],
            'fill_constant',
        )
        check_type(shape, 'shape', (Variable, list, tuple), 'fill_constant')

        if out is not None:
            check_variable_and_dtype(
                out, 'out', [convert_dtype(dtype)], 'fill_constant'
            )

        helper = LayerHelper("fill_constant", **locals())
        paddle.utils.get_shape_tensor_inputs(
            inputs=inputs, attrs=attrs, shape=shape, op_type='fill_constant'
        )

        if out is None:
            out = helper.create_variable_for_type_inference(dtype=dtype)
        attrs['dtype'] = out.dtype
        helper.append_op(
            type='fill_constant',
            inputs=inputs,
            outputs={'Out': [out]},
            attrs=attrs,
            stop_gradient=True,
        )
        out.stop_gradient = True
        return out


@size_args_decorator
def ones(
    shape: ShapeLike,
    dtype: DTypeLike | None = None,
    name: str | None = None,
    *,
    out: paddle.Tensor | None = None,
    device: PlaceLike | None = None,
    requires_grad: bool = False,
    pin_memory: bool = False,
) -> paddle.Tensor:
    """
    Create a Tensor of specified :attr:`shape` and :attr:`dtype` and fill it with 1.

    Args:
        shape (tuple|list|Tensor): Shape of the Tensor to be created. The data type is ``int32`` or ``int64`` .
            If ``shape`` is a list or tuple, the elements of it should be integers or 0-D Tensor with shape [].
            If ``shape`` is an Tensor, it should be an 1-D Tensor which represents a list.
        dtype (np.dtype|str, optional): Data type of output Tensor, it should be one of
            bool, float16, float32, float64, int32 and int64. If it is set to None, the data type will be float32.
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.
        out(Tensor, optional): The output tensor.
        device(PlaceLike|None, optional): The desired device of returned tensor.
            if None, uses the current device for the default tensor type (see paddle.device.set_device()).
            device will be the CPU for CPU tensor types and the current CUDA device for CUDA tensor types. Default: None.
        requires_grad(bool, optional):  If autograd should record operations on the returned tensor. Default: False.
        pin_memory(bool, optional): If set, return tensor would be allocated in the pinned memory. Works only for CPU tensors. Default: False

    Returns:
        Tensor: A Tensor of data type :attr:`dtype` with shape :attr:`shape` and all elements are 1.

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> # shape is a list/tuple
            >>> data1 = paddle.ones(shape=[3, 2])
            >>> print(data1.numpy())
            [[1. 1.]
             [1. 1.]
             [1. 1.]]

            >>> # shape is a Tensor
            >>> shape = paddle.to_tensor([3, 2])
            >>> data2 = paddle.ones(shape=shape)
            >>> print(data2.numpy())
            [[1. 1.]
             [1. 1.]
             [1. 1.]]

            >>> # shape is a Tensor List
            >>> shape = [paddle.to_tensor(3), paddle.to_tensor(2)]
            >>> data3 = paddle.ones(shape=shape)
            >>> print(data3.numpy())
            [[1. 1.]
             [1. 1.]
             [1. 1.]]
    """
    return full(
        shape,
        1,
        dtype,
        out=out,
        device=device,
        requires_grad=requires_grad,
        pin_memory=pin_memory,
        name=name,
    )


@ParamAliasDecorator({"x": ["input"]})
def ones_like(
    x: paddle.Tensor,
    dtype: DTypeLike | None = None,
    name: str | None = None,
    *,
    device: PlaceLike | None = None,
    requires_grad: bool = False,
    pin_memory: bool = False,
) -> paddle.Tensor:
    """
    Returns a Tensor filled with the value 1, with the same shape and
    data type (use ``dtype`` if ``dtype`` is not None) as ``x``.

    .. note::
        Alias Support: The parameter name ``input`` can be used as an alias for ``x``.
        For example, ``ones_like(input=tensor_x, ...)`` is equivalent to ``ones_like(x=tensor_x, ...)``.

    Args:
        x(Tensor): The input tensor which specifies shape and dtype. The
            dtype of ``x`` can be bool, float16, float32, float64, int32, int64.
            alias: ``input``.
        dtype(str|np.dtype, optional): The data type of the
            output tensor. Supported data types: bool, float16, float32, float64,
            int32, int64. If ``dtype`` is None, the data type is the same as ``x``.
            Default is None.
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.
        device(PlaceLike|None, optional): The desired device of returned tensor.
            if None, uses the current device for the default tensor type (see paddle.device.set_device()).
            device will be the CPU for CPU tensor types and the current CUDA device for CUDA tensor types. Default: None.
        requires_grad(bool, optional):  If autograd should record operations on the returned tensor. Default: False.
        pin_memory(bool, optional): If set, return tensor would be allocated in the pinned memory. Works only for CPU tensors. Default: False

    Returns:
        Tensor: A Tensor filled with the value 1, with the same shape and
        data type (use ``dtype`` if ``dtype`` is not None) as ``x``.

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> x = paddle.to_tensor([1,2,3])
            >>> out1 = paddle.ones_like(x)
            >>> print(out1.numpy())
            [1 1 1]
            >>> out2 = paddle.ones_like(x, dtype='int32')
            >>> print(out2.numpy())
            [1 1 1]

    """
    return full_like(
        x=x,
        fill_value=1,
        dtype=dtype,
        name=name,
        device=device,
        pin_memory=pin_memory,
        requires_grad=requires_grad,
    )


@size_args_decorator
def zeros(
    shape: ShapeLike,
    dtype: DTypeLike | None = None,
    name: str | None = None,
    *,
    out: paddle.Tensor | None = None,
    device: PlaceLike | None = None,
    requires_grad: bool = False,
    pin_memory: bool = False,
) -> paddle.Tensor:
    """
    Creates a tensor of specified :attr:`shape` and :attr:`dtype`, and fills it with 0.

    .. note::
        Alias Support: The parameter name ``size`` can be used as an alias for ``shape``.
        ``shape`` can be a variable number of arguments.
        For example:
            ``paddle.ones(1, 2, 3, dtype=paddle.float32)``
            ``paddle.ones(size=[1, 2, 3], dtype=paddle.float32)``

    Args:
        shape (tuple|list|Tensor|variable number of arguments): Shape of the Tensor to be created. The data type is ``int32`` or ``int64`` .
            alias: ``size``.
            If ``shape`` is a list or tuple, each element of it should be integer or 0-D Tensor with shape [].
            If ``shape`` is an Tensor, it should be an 1-D Tensor which represents a list.
            ``shape`` can be a variable number of arguments.
        dtype(np.dtype|str, optional): Data type of output Tensor, it supports
            bool, float16, float32, float64, int32 and int64. Default: if None, the data type is float32.
            property.  For more information, please refer to :ref:`api_guide_Name`.
        out(Tensor, optional): The output tensor.
        device(PlaceLike|None, optional): The desired device of returned tensor.
            if None, uses the current device for the default tensor type (see paddle.device.set_device()).
            device will be the CPU for CPU tensor types and the current CUDA device for CUDA tensor types. Default: None.
        requires_grad(bool, optional):  If autograd should record operations on the returned tensor. Default: False.
        name(str|None, optional): The default value is None.  Normally there is no need for user to set this
        pin_memory(bool, optional): If set, return tensor would be allocated in the pinned memory. Works only for CPU tensors. Default: False

    Returns:
        Tensor: A tensor of data type :attr:`dtype` with shape :attr:`shape` and all elements set to 0.

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> # shape is a list/tuple
            >>> data1 = paddle.zeros(shape=[3, 2])
            >>> print(data1.numpy())
            [[0. 0.]
             [0. 0.]
             [0. 0.]]

            >>> # shape is a Tensor
            >>> shape = paddle.to_tensor([3, 2])
            >>> data2 = paddle.zeros(shape=shape)
            >>> print(data2.numpy())
            [[0. 0.]
             [0. 0.]
             [0. 0.]]

            >>> # shape is a Tensor List
            >>> shape = [paddle.to_tensor(3), paddle.to_tensor(2)]
            >>> data3 = paddle.zeros(shape=shape)
            >>> print(data3.numpy())
            [[0. 0.]
             [0. 0.]
             [0. 0.]]
    """
    return full(
        shape,
        0,
        dtype,
        out=out,
        device=device,
        requires_grad=requires_grad,
        pin_memory=pin_memory,
        name=name,
    )


@ParamAliasDecorator({"x": ["input"]})
def zeros_like(
    x: paddle.Tensor,
    dtype: DTypeLike | None = None,
    name: str | None = None,
    *,
    device: PlaceLike | None = None,
    requires_grad: bool = False,
    pin_memory: bool = False,
) -> paddle.Tensor:
    """
    Returns a Tensor filled with the value 0, with the same shape and
    data type (use ``dtype`` if ``dtype`` is not None) as ``x``.

    .. note::
        Alias Support: The parameter name ``input`` can be used as an alias for ``x``.
        For example, ``zeros_like(input=x, ...)`` is equivalent to ``zeros_like(x=x, ...)``.

    Args:
        x(Tensor): The input tensor which specifies shape and dtype. The
            dtype of ``x`` can be bool, float16, float32, float64, int32, int64.
            Alias: ``input``.
        dtype(str|np.dtype, optional): The data type of the
            output tensor. Supported data types: bool, float16, float32, float64,
            int32, int64. If ``dtype`` is None, the data type is the same as ``x``.
            Default is None.
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.
        device(PlaceLike|None, optional): The desired device of returned tensor.
            if None, uses the current device for the default tensor type (see paddle.device.set_device()).
            device will be the CPU for CPU tensor types and the current CUDA device for CUDA tensor types. Default: None.
        requires_grad(bool, optional):  If autograd should record operations on the returned tensor. Default: False.
        pin_memory(bool, optional): If set, return tensor would be allocated in the pinned memory. Works only for CPU tensors. Default: False

    Returns:
        Tensor: A Tensor filled with the value 0, with the same shape and
        data type (use ``dtype`` if ``dtype`` is not None) as ``x``.


    Examples:
        .. code-block:: python

            >>> import paddle

            >>> x = paddle.to_tensor([1, 2, 3])
            >>> out1 = paddle.zeros_like(x)
            >>> print(out1.numpy())
            [0 0 0]
            >>> out2 = paddle.zeros_like(x, dtype='int32')
            >>> print(out2.numpy())
            [0 0 0]

    """
    return full_like(
        x=x,
        fill_value=0,
        dtype=dtype,
        name=name,
        device=device,
        requires_grad=requires_grad,
        pin_memory=pin_memory,
    )


@param_two_alias(["num_rows", "n"], ["num_columns", "m"])
def eye(
    num_rows: int | paddle.Tensor,
    num_columns: int | paddle.Tensor | None = None,
    dtype: DTypeLike | None = None,
    name: str | None = None,
    *,
    out: paddle.Tensor | None = None,
    device: PlaceLike | None = None,
    requires_grad: bool = False,
    pin_memory: bool = False,
) -> paddle.Tensor:
    """

    This function constructs 2-D Tensor with ones on the diagonal and zeros elsewhere.

    .. note::
        Alias Support: The parameter name ``n`` can be used as an alias for ``num_rows``, and ``m`` can be used as an alias for ``num_columns``.
        For example, ``eye(n=tensor_x, m=tensor_y, ...)`` is equivalent to ``eye(num_rows=tensor_x, num_columns=tensor_y, ...)``.

    Args:
        num_rows(int | paddle.Tensor): the number of rows in each batch Tensor.
            Alias: ``n``.
        num_columns(int | paddle.Tensor | None, optional): the number of columns in each batch Tensor.
            If None, default: num_rows.
            Alias: ``m``.
        dtype(np.dtype|str, optional): The data type of the returned Tensor.
            It should be int32, int64, float16, float32, float64, complex64, complex128. Default: if None, the data type
            is float32.
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.
        out(Tensor, optional): The output tensor.
        device(PlaceLike|None, optional): The desired device of returned tensor.
            if None, uses the current device for the default tensor type (see paddle.device.set_device()).
            device will be the CPU for CPU tensor types and the current CUDA device for CUDA tensor types. Default: None.
        requires_grad(bool, optional):  If autograd should record operations on the returned tensor. Default: False.
        pin_memory(bool, optional): If set, return tensor would be allocated in the pinned memory. Works only for CPU tensors. Default: False

    Returns:
        Tensor: An identity Tensor or DenseTensor of shape [num_rows, num_columns].

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> data = paddle.eye(3, dtype='int32')
            >>> print(data.numpy())
            [[1 0 0]
             [0 1 0]
             [0 0 1]]
            >>> data = paddle.eye(2, 3, dtype='int32')
            >>> print(data.numpy())
            [[1 0 0]
             [0 1 0]]
    """

    def _check_attr(attr, message):
        if isinstance(attr, ((Variable, core.eager.Tensor, paddle.pir.Value))):
            assert len(attr.shape) == 0 or (
                len(attr.shape) == 1 and attr.shape[0] in [1, -1]
            )
        elif not isinstance(attr, (int, np.integer)) or attr < 0:
            raise TypeError(f"{message} should be a non-negative int.")

    _check_attr(num_rows, "num_rows")

    if dtype is None:
        dtype = paddle.get_default_dtype()
    if not isinstance(dtype, (core.VarDesc.VarType, paddle.pir.core.DataType)):
        dtype = convert_np_dtype_to_dtype_(dtype)
    if num_columns is not None:
        _check_attr(num_columns, "num_columns")
    else:
        num_columns = num_rows

    if in_dynamic_or_pir_mode():
        device = (
            _get_paddle_place(device)
            if device is not None
            else _current_expected_place()
        )
        if (
            pin_memory
            and in_dynamic_mode()
            and device is not None
            and not isinstance(
                device, (core.CUDAPinnedPlace, core.XPUPinnedPlace)
            )
        ):
            if isinstance(device, core.CUDAPlace) or (
                isinstance(device, core.Place) and device.is_gpu_place()
            ):
                device = core.CUDAPinnedPlace()
            elif isinstance(device, core.XPUPlace) or (
                isinstance(device, core.Place) and device.is_xpu_place()
            ):
                device = core.XPUPinnedPlace()
            else:
                raise RuntimeError(
                    f"Pinning memory is not supported for {device}"
                )
        tensor = _C_ops.eye(
            num_rows,
            num_columns,
            dtype,
            device,
            out=out,
        )
        if requires_grad is True:
            tensor.stop_gradient = False
            if out is not None:
                out.stop_gradient = False
        if pin_memory and in_dynamic_mode():
            tensor = tensor.pin_memory()
        return tensor
    else:
        helper = LayerHelper("eye", **locals())
        check_dtype(
            dtype,
            'dtype',
            [
                'float16',
                'float32',
                'float64',
                'uint16',
                'int32',
                'int64',
                'complex64',
                'complex128',
            ],
            'eye',
        )
        out = helper.create_variable_for_type_inference(dtype=dtype)
        helper.append_op(
            type='eye',
            inputs={},
            outputs={'Out': [out]},
            attrs={
                'num_rows': num_rows,
                'num_columns': num_columns,
                'dtype': dtype,
            },
            stop_gradient=True,
        )

    out.stop_gradient = True
    return out


@ParamAliasDecorator({"shape": ["size"]})
def full(
    shape: ShapeLike,
    fill_value: Numeric | str,
    dtype: DTypeLike | None = None,
    name: str | None = None,
    *,
    out: paddle.Tensor | None = None,
    device: PlaceLike | None = None,
    requires_grad: bool = False,
    pin_memory: bool = False,
) -> paddle.Tensor:
    """

    Return a Tensor with the ``fill_value`` which size is same as ``shape``.

    .. note::
        Alias Support: The parameter name ``size`` can be used as an alias for ``shape``.
        For example, ``full(size=[2, 3], …)`` is equivalent to ``full(shape=[2, 3], …)``.

    Args:
        shape (tuple|list|Tensor): Shape of the Tensor to be created. The data type is ``int32`` or ``int64`` .
            If ``shape`` is a list or tuple, each element of it should be integer or 0-D Tensor with shape [].
            If ``shape`` is an Tensor, it should be an 1-D Tensor which represents a list.
            Alias: ``size``.
        fill_value(Scalar|Tensor): The constant value used to initialize the Tensor to be created.
            If ``fill_value`` is an Tensor, it should be an 0-D Tensor which represents a scalar.
        dtype(np.dtype|str, optional): Data type of the output Tensor
            which can be float16, float32, float64, int32, int64, complex64, complex128. If dtype is `None`, the data
            type of created Tensor is `float32`.
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.
        out(Tensor, optional): The output tensor.
        device(PlaceLike|None, optional): The desired device of returned tensor.
            if None, uses the current device for the default tensor type (see paddle.device.set_device()).
            device will be the CPU for CPU tensor types and the current CUDA device for CUDA tensor types. Default: None.
        requires_grad(bool, optional):  If autograd should record operations on the returned tensor. Default: False.
        pin_memory(bool, optional): If set, return tensor would be allocated in the pinned memory. Works only for CPU tensors. Default: False

    Returns:
        Tensor: Tensor which is created according to ``shape``, ``fill_value`` and ``dtype``.

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> # shape is a list/tuple
            >>> data1 = paddle.full(shape=[3, 2], fill_value=1.)
            >>> print(data1.numpy())
            [[1. 1.]
             [1. 1.]
             [1. 1.]]

            >>> # shape is a Tensor
            >>> shape = paddle.to_tensor([3, 2])
            >>> data2 = paddle.full(shape=shape, fill_value=2.)
            >>> print(data2.numpy())
            [[2. 2.]
             [2. 2.]
             [2. 2.]]

            >>> # shape is a Tensor List
            >>> shape = [paddle.to_tensor(3), paddle.to_tensor(2)]
            >>> data3 = paddle.full(shape=shape, fill_value=3.)
            >>> print(data3.numpy())
            [[3. 3.]
             [3. 3.]
             [3. 3.]]

            >>> # fill_value is a Tensor.
            >>> val = paddle.full([], 2.0, "float32")
            >>> data5 = paddle.full(shape=[3, 2], fill_value=val)
            >>> print(data5.numpy())
            [[2. 2.]
             [2. 2.]
             [2. 2.]]
    """
    # Include str type check to handle string numeric values like "0.5" that occur in CI tests.
    # The compatible method for fliud operators, may be it can be removed in the future.
    if not isinstance(
        fill_value,
        (numbers.Number, str, core.eager.Tensor, Variable, paddle.pir.Value),
    ):
        raise TypeError(
            f"The fill_value should be int, float, bool, complex, np.number, string numeric values or Tensor, but received {type(fill_value)}."
        )

    if dtype is None:
        if isinstance(fill_value, (bool)):
            dtype = "bool"
        elif isinstance(fill_value, (builtins.complex)):
            dtype = "complex128"
        else:
            dtype = paddle.get_default_dtype()
    if in_dynamic_or_pir_mode():
        device = (
            _get_paddle_place(device)
            if device is not None
            else _current_expected_place()
        )
        if (
            pin_memory
            and in_dynamic_mode()
            and device is not None
            and not isinstance(
                device, (core.CUDAPinnedPlace, core.XPUPinnedPlace)
            )
        ):
            if isinstance(device, core.CUDAPlace) or (
                isinstance(device, core.Place) and device.is_gpu_place()
            ):
                device = core.CUDAPinnedPlace()
            elif isinstance(device, core.XPUPlace) or (
                isinstance(device, core.Place) and device.is_xpu_place()
            ):
                device = core.XPUPinnedPlace()
            else:
                raise RuntimeError(
                    f"Pinning memory is not supported for {device}"
                )

    tensor = fill_constant(
        shape=shape,
        dtype=dtype,
        value=fill_value,
        out=out,
        place=device,
        name=name,
    )
    if requires_grad is True:
        tensor.stop_gradient = False
        if out is not None:
            out.stop_gradient = False
    if pin_memory and in_dynamic_mode():
        tensor = tensor.pin_memory()
    return tensor


def arange(
    start: float | paddle.Tensor = 0,
    end: float | paddle.Tensor | None = None,
    step: float | paddle.Tensor = 1,
    dtype: DTypeLike | None = None,
    *,
    out: paddle.Tensor | None = None,
    device: PlaceLike | None = None,
    requires_grad: bool = False,
    pin_memory: bool = False,
    name: str | None = None,
) -> paddle.Tensor:
    """
    Returns a 1-D Tensor with spaced values within a given interval.

    Values are generated into the half-open interval [``start``, ``end``) with
    the ``step``. (the interval including ``start`` but excluding ``end``).

    If ``dtype`` is float32 or float64, we advise adding a small epsilon to
    ``end`` to avoid floating point rounding errors when comparing against ``end``.

    Parameters:
        start(float|int|Tensor): Start of interval. The interval includes this
            value. If ``end`` is None, the half-open interval is [0, ``start``).
            If ``start`` is a Tensor, it is a 0-D Tensor which represents a scalar
            and data type is int32, int64, float32, float64. Default is 0.
        end(float|int|Tensor, optional): End of interval. The interval does not
            include this value. If ``end`` is a Tensor, it is a 0-D Tensor which
            represents a scalar and data type is int32, int64, float32, float64.
            If ``end`` is None, the half-open interval is [0, ``start``).
            Default is None.
        step(float|int|Tensor, optional): Spacing between values. For any out,
            it is the instance between two adjacent values, out[i+1] - out[i].
            If ``step`` is a Tensor, it is a 0-D Tensor which represents a scalar
            and data type is int32, int64, float32, float64. . Default is 1.
        dtype(str|np.dtype, optional): The data type of the
            output tensor. Supported data types: int32, int64, float32, float64.
            If ``dtype`` is None, the data type is float32. Default is None.
        out(Tensor, optional): The output tensor.
        device(PlaceLike|None, optional): The desired device of returned tensor.
            if None, uses the current device for the default tensor type (see paddle.device.set_device()).
            device will be the CPU for CPU tensor types and the current CUDA device for CUDA tensor types. Default: None.
        requires_grad(bool, optional):  If autograd should record operations on the returned tensor. Default: False.
        pin_memory(bool, optional): If set, return tensor would be allocated in the pinned memory. Works only for CPU tensors. Default: False
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.

    Returns:
        Tensor: A 1-D Tensor with values from the interval [``start``, ``end``)
        taken with common difference ``step`` beginning from ``start``. Its
        data type is set by ``dtype``.

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> out1 = paddle.arange(5)
            >>> print(out1.numpy())
            [0 1 2 3 4]

            >>> out2 = paddle.arange(3, 9, 2.0)
            >>> print(out2.numpy())
            [3. 5. 7.]

            >>> # use 4.999 instead of 5.0 to avoid floating point rounding errors
            >>> out3 = paddle.arange(4.999, dtype='float32')
            >>> print(out3.numpy())
            [0. 1. 2. 3. 4.]

            >>> start_var = paddle.to_tensor(3)
            >>> out4 = paddle.arange(start_var, 7)
            >>> print(out4.numpy())
            [3 4 5 6]

    """
    if end is None:
        end = start
        start = 0

    if dtype is None:
        for val in [start, end, step]:
            if isinstance(val, (Variable, paddle.pir.Value)):
                if not paddle.is_integer(val):
                    dtype = paddle.get_default_dtype()
                    break
                else:
                    dtype = 'int64'
            else:
                if not isinstance(val, np.integer) and not isinstance(val, int):
                    dtype = paddle.get_default_dtype()
                    break
                else:
                    dtype = 'int64'

    out_shape = None
    is_value_input = (
        not isinstance(start, (Variable, paddle.pir.Value))
        and not isinstance(end, (Variable, paddle.pir.Value))
        and not isinstance(step, (Variable, paddle.pir.Value))
    )

    if not in_dynamic_mode() and is_value_input:
        out_shape = [int(math.ceil((end - start) / step))]

    if not isinstance(dtype, (core.VarDesc.VarType, core.DataType)):
        dtype = convert_np_dtype_to_dtype_(dtype)

    if in_dynamic_or_pir_mode():
        device = (
            _get_paddle_place(device)
            if device is not None
            else _current_expected_place()
        )
        if (
            pin_memory
            and in_dynamic_mode()
            and device is not None
            and not isinstance(
                device, (core.CUDAPinnedPlace, core.XPUPinnedPlace)
            )
        ):
            if isinstance(device, core.CUDAPlace) or (
                isinstance(device, core.Place) and device.is_gpu_place()
            ):
                device = core.CUDAPinnedPlace()
            elif isinstance(device, core.XPUPlace) or (
                isinstance(device, core.Place) and device.is_xpu_place()
            ):
                device = core.XPUPinnedPlace()
            else:
                raise RuntimeError(
                    f"Pinning memory is not supported for {device}"
                )

    if is_value_input and in_pir_mode():
        tensor = _C_ops.arange(
            start,
            end,
            step,
            dtype,
            device,
            out=out,
        )
        tensor.stop_gradient = not requires_grad
        if out is not None:
            out.stop_gradient = not requires_grad
        if pin_memory and in_dynamic_mode():
            tensor = tensor.pin_memory()
        return tensor

    if not isinstance(start, (Variable, paddle.pir.Value)):
        with device_guard("cpu"):
            if not np.isfinite(start):
                raise ValueError(
                    f"The value of start must be finite, but received: {start}."
                )
            start = fill_constant([1], dtype, start, force_cpu=True)
    elif start.dtype != dtype:
        if in_dynamic_mode() and not paddle.isfinite(start):
            raise ValueError(
                f"The value of start must be finite, but received: {start}."
            )
        start = paddle.cast(start, dtype)

    if not isinstance(end, (Variable, paddle.pir.Value)):
        with device_guard("cpu"):
            if not np.isfinite(end):
                raise ValueError(
                    f"The value of end must be finite, but received: {end}."
                )
            end = fill_constant([1], dtype, end, force_cpu=True)
    elif end.dtype != dtype:
        if in_dynamic_mode() and not paddle.isfinite(end):
            raise ValueError(
                f"The value of end must be finite, but received: {end}."
            )
        end = paddle.cast(end, dtype)

    if not isinstance(step, (Variable, paddle.pir.Value)):
        with device_guard("cpu"):
            step = fill_constant([1], dtype, step, force_cpu=True)
    elif step.dtype != dtype:
        step = paddle.cast(step, dtype)

    if in_dynamic_or_pir_mode():
        tensor = _C_ops.arange(
            start,
            end,
            step,
            dtype,
            (
                _get_paddle_place(device)
                if device is not None
                else _current_expected_place()
            ),
            out=out,
        )
        tensor.stop_gradient = not requires_grad
        if out is not None:
            out.stop_gradient = not requires_grad
        if pin_memory and in_dynamic_mode():
            tensor = tensor.pin_memory()
        return tensor
    else:
        check_dtype(
            dtype,
            'dtype',
            ['float32', 'float64', 'int32', 'int64', 'float16', 'uint16'],
            'range/arange',
        )
        helper = LayerHelper('range', **locals())
        out = helper.create_variable_for_type_inference(dtype, shape=out_shape)
        helper.append_op(
            type='range',
            inputs={'Start': start, 'End': end, 'Step': step},
            outputs={'Out': out},
        )
        out.stop_gradient = True
        if out_shape is not None:
            out.desc.set_shape(out_shape)
        return out


@deprecated(
    reason=(
        "paddle.range is deprecated and will be removed in a future release because its behavior is inconsistent with Python's range builtin."
        "Instead, use paddle.arange, which produces values in [start, end)"
    ),
    level=1,
)
def range(
    start: float | paddle.Tensor = 0,
    end: float | paddle.Tensor | None = None,
    step: float | paddle.Tensor = 1,
    dtype: DTypeLike = None,
    *,
    out: paddle.Tensor | None = None,
    device: PlaceLike | None = None,
    requires_grad: bool = False,
    name: str | None = None,
):
    r"""
    Returns a 1-D Tensor of size $$ \lfloor \dfrac{end - start}{step} \rfloor + 1 $$ with values
    from ``start`` to ``end`` with ``step``. ``step`` is the gap between two values in the tensor.

    $$
    out_{i+1} = out_{i} + step
    $$

    Values are generated into the half-open interval [``start``, ``end``) with
    the ``step``. (the interval including ``start`` but excluding ``end``).

    If ``dtype`` is float32 or float64, we advise adding a small epsilon to
    ``end`` to avoid floating point rounding errors when comparing against ``end``.

    Parameters:
        start(float|int|Tensor): Start of interval. The interval includes this
            value. If ``end`` is None, the half-open interval is [0, ``start``).
            If ``start`` is a Tensor, it is a 0-D Tensor which represents a scalar
            and data type is int32, int64, float32, float64. Default is 0.
        end(float|int|Tensor, optional): End of interval. The interval does not
            include this value. If ``end`` is a Tensor, it is a 0-D Tensor which
            represents a scalar and data type is int32, int64, float32, float64.
            If ``end`` is None, the half-open interval is [0, ``start``).
            Default is None.
        step(float|int|Tensor, optional): Spacing between values. For any out,
            it is the instance between two adjacent values, out[i+1] - out[i].
            If ``step`` is a Tensor, it is a 0-D Tensor which represents a scalar
            and data type is int32, int64, float32, float64. . Default is 1.
        dtype(str|np.dtype, optional): The data type of the
            output tensor. Supported data types: int32, int64, float32, float64.
            If ``dtype`` is None, the data type is float32. Default is None.
        out(Tensor, optional): The output tensor.
        device(PlaceLike|None, optional): The desired device of returned tensor.
            if None, uses the current device for the default tensor type (see paddle.device.set_device()).
            device will be the CPU for CPU tensor types and the current CUDA device for CUDA tensor types. Default: None.
        requires_grad(bool, optional):  If autograd should record operations on the returned tensor. Default: False.
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.

    Returns:
        Tensor: A 1-D Tensor with values from the interval [``start``, ``end``)
        taken with common difference ``step`` beginning from ``start``. Its
        data type is set by ``dtype``.

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> out1 = paddle.range(5)
            >>> print(out1.numpy())
            [0 1 2 3 4 5]

            >>> out2 = paddle.range(3, 9, 2.0)
            >>> print(out2.numpy())
            [3. 5. 7. 9.]

            >>> # use 4.999 instead of 5.0 to avoid floating point rounding errors
            >>> out3 = paddle.range(4.999, dtype='float32')
            >>> print(out3.numpy())
            [0. 1. 2. 3. 4.]

            >>> start_var = paddle.to_tensor(3)
            >>> out4 = paddle.range(start_var, 7)
            >>> print(out4.numpy())
            [3 4 5 6 7]

    """
    if end is None:
        end = start
        start = 0

    if dtype is None:
        dtype = paddle.get_default_dtype()

    is_value_input = (
        not isinstance(start, (Variable, paddle.pir.Value))
        and not isinstance(end, (Variable, paddle.pir.Value))
        and not isinstance(step, (Variable, paddle.pir.Value))
    )

    if not isinstance(dtype, (core.VarDesc.VarType, core.DataType)):
        dtype = convert_np_dtype_to_dtype_(dtype)

    if is_value_input and in_pir_mode():
        tensor = _C_ops.range_v2(
            start,
            end,
            step,
            dtype,
            (
                _get_paddle_place(device)
                if device is not None
                else _current_expected_place()
            ),
            out=out,
        )
        tensor.stop_gradient = not requires_grad
        if out is not None:
            out.stop_gradient = not requires_grad
        return tensor

    if not isinstance(start, (Variable, paddle.pir.Value)):
        with device_guard("cpu"):
            start = fill_constant([1], dtype, start, force_cpu=True)
    elif start.dtype != dtype:
        start = paddle.cast(start, dtype)

    if not isinstance(end, (Variable, paddle.pir.Value)):
        with device_guard("cpu"):
            end = fill_constant([1], dtype, end, force_cpu=True)
    elif end.dtype != dtype:
        end = paddle.cast(end, dtype)

    if not isinstance(step, (Variable, paddle.pir.Value)):
        with device_guard("cpu"):
            step = fill_constant([1], dtype, step, force_cpu=True)
    elif step.dtype != dtype:
        step = paddle.cast(step, dtype)

    tensor = _C_ops.range_v2(
        start,
        end,
        step,
        dtype,
        (
            _get_paddle_place(device)
            if device is not None
            else _current_expected_place()
        ),
        out=out,
    )
    tensor.stop_gradient = not requires_grad
    if out is not None:
        out.stop_gradient = not requires_grad
    return tensor


def _tril_triu_op(helper: LayerHelper) -> paddle.Tensor:
    """Base op of tril_op and triu_op"""
    op_type = helper.layer_type
    x = helper.kwargs.get('x', None)

    assert x is not None, f'x cannot be None in {op_type}'
    check_variable_and_dtype(
        x,
        'x',
        [
            'float16',
            'uint16',
            'float32',
            'float64',
            'int32',
            'int64',
            'bool',
            'complex64',
            'complex128',
        ],
        op_type,
    )
    if len(x.shape) < 2:
        raise ValueError(f"x shape in {op_type} must be at least 2-D")
    diagonal = helper.kwargs.get('diagonal', 0)
    if not isinstance(diagonal, (int,)):
        raise TypeError(f"diagonal in {op_type} must be a python Int")
    name = helper.kwargs.get('name', None)

    if name is None:
        out = helper.create_variable_for_type_inference(dtype=x.dtype)
    else:
        out = helper.create_variable(
            name=name, dtype=x.dtype, persistable=False
        )

    helper.append_op(
        type="tril_triu",
        inputs={"X": x},
        attrs={
            "diagonal": diagonal,
            "lower": True if op_type == 'tril' else False,
        },
        outputs={"Out": out},
    )

    return out


@inplace_apis_in_dygraph_only
def tril_(
    x: paddle.Tensor, diagonal: int = 0, name: str | None = None
) -> paddle.Tensor | None:
    r"""
    Inplace version of ``tril`` API, the output Tensor will be inplaced with input ``x``.
    Please refer to :ref:`api_paddle_tril`.
    """

    if in_dynamic_mode():
        return _C_ops.tril_(x, diagonal)


@inplace_apis_in_dygraph_only
def triu_(
    x: paddle.Tensor, diagonal: int = 0, name: str | None = None
) -> paddle.Tensor | None:
    r"""
    Inplace version of ``triu`` API, the output Tensor will be inplaced with input ``x``.
    Please refer to :ref:`api_paddle_triu`.
    """

    if in_dynamic_mode():
        return _C_ops.triu_(x, diagonal)


@overload
def meshgrid(
    args: Sequence[paddle.Tensor], name: str | None = None
) -> list[paddle.Tensor]: ...


@overload
def meshgrid(
    *args: paddle.Tensor, name: str | None = None
) -> list[paddle.Tensor]: ...


def meshgrid(*args, **kwargs):
    """

    Takes a list of N tensors as input :attr:`*args`, each of which is 1-dimensional vector, and creates N-dimensional grids.

    Args:
        *args(Tensor|list of Tensor) : tensors (tuple(list) of tensor): the shapes of input k tensors are (N1,),
            (N2,),..., (Nk,). Support data types: ``float64``, ``bfloat16``, ``float16``, ``float32``, ``int32``, ``int64``, ``complex64``, ``complex128``.
        **kwargs (optional): Currently, only accept name in **kwargs
            The default value is None. Normally there is no need for
            user to set this property. For more information, please refer to :ref:`api_guide_Name`.

    Returns:
         Tensor: k tensors. The shape of each tensor is (N1, N2, ..., Nk)

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> x = paddle.randint(low=0, high=100, shape=[100])
            >>> y = paddle.randint(low=0, high=100, shape=[200])

            >>> grid_x, grid_y = paddle.meshgrid(x, y)

            >>> print(grid_x.shape)
            [100, 200]
            >>> print(grid_y.shape)
            [100, 200]

    """

    if len(args) == 1 and isinstance(args[0], (list, tuple)):
        args = args[0]
    if in_dynamic_or_pir_mode():
        return _C_ops.meshgrid(list(args))
    else:
        name = kwargs.get("name", None)
        helper = LayerHelper('meshgrid', **locals())

        if not isinstance(args, (list, tuple)):
            raise TypeError(
                "The type of input args in meshgrid should be list."
            )

        for id, input_ in enumerate(args):
            check_dtype(
                input_.dtype,
                'create data type',
                [
                    'uint16',
                    'float16',
                    'float32',
                    'float64',
                    'int32',
                    'int64',
                    'complex64',
                    'complex128',
                ],
                'meshgrid',
            )

        num = len(args)
        out = [
            helper.create_variable_for_type_inference(dtype=args[i].dtype)
            for i in builtins.range(num)
        ]
        helper.append_op(
            type='meshgrid', inputs={'X': list(args)}, outputs={'Out': out}
        )

        return out


def diag_embed(
    input: TensorLike, offset: int = 0, dim1: int = -2, dim2: int = -1
) -> paddle.Tensor:
    """
    Creates a tensor whose diagonals of certain 2D planes (specified by dim1 and dim2)
    are filled by ``input``. By default, a 2D plane formed by the last two dimensions
    of the returned tensor will be selected.

    The argument ``offset`` determines which diagonal is generated:

    - If offset = 0, it is the main diagonal.
    - If offset > 0, it is above the main diagonal.
    - If offset < 0, it is below the main diagonal.

    Args:
        input(Tensor|numpy.ndarray): The input tensor. Must be at least 1-dimensional. The input data type should be float32, float64, int32, int64.
        offset(int, optional): Which diagonal to consider. Default: 0 (main diagonal).
        dim1(int, optional): The first dimension with respect to which to take diagonal. Default: -2.
        dim2(int, optional): The second dimension with respect to which to take diagonal. Default: -1.

    Returns:
        Tensor, the output data type is the same as input data type.

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> diag_embed_input = paddle.arange(6)

            >>> diag_embed_output1 = paddle.diag_embed(diag_embed_input)
            >>> print(diag_embed_output1)
            Tensor(shape=[6, 6], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[0, 0, 0, 0, 0, 0],
             [0, 1, 0, 0, 0, 0],
             [0, 0, 2, 0, 0, 0],
             [0, 0, 0, 3, 0, 0],
             [0, 0, 0, 0, 4, 0],
             [0, 0, 0, 0, 0, 5]])

            >>> diag_embed_output2 = paddle.diag_embed(diag_embed_input, offset=-1, dim1=0,dim2=1 )
            >>> print(diag_embed_output2)
            Tensor(shape=[7, 7], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[0, 0, 0, 0, 0, 0, 0],
             [0, 0, 0, 0, 0, 0, 0],
             [0, 1, 0, 0, 0, 0, 0],
             [0, 0, 2, 0, 0, 0, 0],
             [0, 0, 0, 3, 0, 0, 0],
             [0, 0, 0, 0, 4, 0, 0],
             [0, 0, 0, 0, 0, 5, 0]])

            >>> diag_embed_input_2dim = paddle.reshape(diag_embed_input,[2,3])
            >>> print(diag_embed_input_2dim)
            Tensor(shape=[2, 3], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[0, 1, 2],
            [3, 4, 5]])
            >>> diag_embed_output3 = paddle.diag_embed(diag_embed_input_2dim,offset= 0, dim1=0, dim2=2 )
            >>> print(diag_embed_output3)
            Tensor(shape=[3, 2, 3], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[[0, 0, 0],
              [3, 0, 0]],
             [[0, 1, 0],
              [0, 4, 0]],
             [[0, 0, 2],
              [0, 0, 5]]])
    """
    if not isinstance(input, Variable):
        input = assign(input)

    if in_dynamic_or_pir_mode():
        return _C_ops.diag_embed(input, offset, dim1, dim2)

    inputs = {'Input': [input]}
    attrs = {'offset': offset, 'dim1': dim1, 'dim2': dim2}

    def __check_input(input, offset, dim1, dim2):
        check_dtype(
            input.dtype,
            'Input',
            ['int32', 'int64', 'float16', 'float32', 'float64'],
            'diag_embed',
        )

        input_shape = list(input.shape)
        assert len(input_shape) >= 1, (
            "Input must be at least 1-dimensional, "
            f"But received Input's dimensional: {len(input_shape)}.\n"
        )

        assert np.abs(dim1) <= len(input_shape), (
            f"Dim1 is out of range (expected to be in range of [{-(len(input_shape) + 1)}, {len(input_shape)}], but got {dim1}).\n"
        )

        assert np.abs(dim2) <= len(input_shape), (
            f"Dim2 is out of range (expected to be in range of [{-(len(input_shape) + 1)}, {len(input_shape)}], but got {dim2}).\n"
        )

        dim1_ = dim1 if dim1 >= 0 else len(input_shape) + dim1 + 1
        dim2_ = dim2 if dim2 >= 0 else len(input_shape) + dim2 + 1
        assert dim1_ != dim2_, (
            "dim1 and dim2 cannot be the same dimension."
            f"But received dim1 = {dim1}, dim2 = {dim2}\n"
        )

    __check_input(input, offset, dim1, dim2)
    helper = LayerHelper("diag_embed", **locals())

    out = helper.create_variable_for_type_inference(dtype=input.dtype)

    helper.append_op(
        type='diag_embed',
        inputs={'Input': [input]},
        attrs={'offset': offset, 'dim1': dim1, 'dim2': dim2},
        outputs={'Out': [out]},
    )
    out.stop_gradient = True
    return out


def diagflat(
    x: paddle.Tensor, offset: int = 0, name: str | None = None
) -> paddle.Tensor:
    """
    If ``x`` is a vector (1-D tensor), a 2-D square tensor with the elements of ``x`` as the diagonal is returned.

    If ``x`` is a tensor (more than 1-D), a 2-D square tensor with the elements of flattened ``x`` as the diagonal is returned.

    The argument ``offset`` controls the diagonal offset.


    If ``offset`` = 0, it is the main diagonal.

    If ``offset`` > 0, it is superdiagonal.

    If ``offset`` < 0, it is subdiagonal.

    Args:
        x (Tensor): The input tensor. It can be any shape. Its data type should be float16, float32, float64, int32, int64.
        offset (int, optional): The diagonal offset. A positive value represents superdiagonal, 0 represents the main diagonal, and a negative value represents subdiagonal. Default: 0 (main diagonal).
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.

    Returns:
        Tensor, a square matrix. The output data type is the same as input data type.

    Examples:
        .. code-block:: python
            :name: diagflat-example-1

            >>> import paddle

            >>> x = paddle.to_tensor([1, 2, 3])
            >>> y = paddle.diagflat(x)
            >>> print(y)
            Tensor(shape=[3, 3], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[1, 0, 0],
             [0, 2, 0],
             [0, 0, 3]])

            >>> y = paddle.diagflat(x, offset=1)
            >>> print(y)
            Tensor(shape=[4, 4], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[0, 1, 0, 0],
             [0, 0, 2, 0],
             [0, 0, 0, 3],
             [0, 0, 0, 0]])

            >>> y = paddle.diagflat(x, offset=-1)
            >>> print(y)
            Tensor(shape=[4, 4], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[0, 0, 0, 0],
             [1, 0, 0, 0],
             [0, 2, 0, 0],
             [0, 0, 3, 0]])

        .. code-block:: python
            :name: diagflat-example-2

            >>> import paddle

            >>> x = paddle.to_tensor([[1, 2], [3, 4]])
            >>> y = paddle.diagflat(x)
            >>> print(y)
            Tensor(shape=[4, 4], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[1, 0, 0, 0],
             [0, 2, 0, 0],
             [0, 0, 3, 0],
             [0, 0, 0, 4]])

            >>> y = paddle.diagflat(x, offset=1)
            >>> print(y)
            Tensor(shape=[5, 5], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[0, 1, 0, 0, 0],
             [0, 0, 2, 0, 0],
             [0, 0, 0, 3, 0],
             [0, 0, 0, 0, 4],
             [0, 0, 0, 0, 0]])

            >>> y = paddle.diagflat(x, offset=-1)
            >>> print(y)
            Tensor(shape=[5, 5], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[0, 0, 0, 0, 0],
             [1, 0, 0, 0, 0],
             [0, 2, 0, 0, 0],
             [0, 0, 3, 0, 0],
             [0, 0, 0, 4, 0]])

    """
    if in_dynamic_or_pir_mode():
        if len(x.shape) <= 1:
            return _C_ops.diag(x, offset, 0)
        else:
            y = _C_ops.flatten(x, 0, -1)
            return _C_ops.diag(y, offset, 0)
    else:
        padding_value = 0
        check_type(x, 'x', (Variable), 'diagflat')
        check_dtype(
            x.dtype,
            'x',
            ['float16', 'float32', 'float64', 'int32', 'int64', 'uint16'],
            'diagflat',
        )
        check_type(offset, 'offset', (int), 'diagflat')

        helper = LayerHelper("diagflat", **locals())
        out1 = helper.create_variable_for_type_inference(dtype=x.dtype)
        out1_shape = helper.create_variable_for_type_inference(x.dtype)
        out2 = helper.create_variable_for_type_inference(dtype=x.dtype)

        if len(x.shape) <= 1:
            helper.append_op(
                type='diag_v2',
                inputs={'X': x},
                outputs={'Out': out2},
                attrs={'offset': offset, 'padding_value': padding_value},
            )
        else:
            helper.append_op(
                type='flatten_contiguous_range',
                inputs={'X': x},
                outputs={'Out': out1, 'XShape': out1_shape},
                attrs={'start_axis': 0, 'stop_axis': -1},
            )
            out1.stop_gradient = True

            helper.append_op(
                type='diag_v2',
                inputs={'X': out1},
                outputs={'Out': out2},
                attrs={'offset': offset, 'padding_value': padding_value},
            )
        out2.stop_gradient = True
        return out2


def diag(
    x: paddle.Tensor,
    offset: int = 0,
    padding_value: int = 0,
    name: str | None = None,
) -> paddle.Tensor:
    """
    If ``x`` is a vector (1-D tensor), a 2-D square tensor with the elements of ``x`` as the diagonal is returned.

    If ``x`` is a matrix (2-D tensor), a 1-D tensor with the diagonal elements of ``x`` is returned.

    The argument ``offset`` controls the diagonal offset:

    If ``offset`` = 0, it is the main diagonal.

    If ``offset`` > 0, it is superdiagonal.

    If ``offset`` < 0, it is subdiagonal.

    Args:
        x (Tensor): The input tensor. Its shape is either 1-D or 2-D. Its data type should be float16, float32, float64, int32, int64, complex64, complex128.
        offset (int, optional): The diagonal offset. A positive value represents superdiagonal, 0 represents the main diagonal, and a negative value represents subdiagonal.
        padding_value (int|float, optional): Use this value to fill the area outside the specified diagonal band. Only takes effect when the input is a 1-D Tensor. The default value is 0.
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.

    Returns:
        Tensor, a square matrix or a vector. The output data type is the same as input data type.

    Examples:
        .. code-block:: python
            :name: diag-example-1

            >>> import paddle

            >>> paddle.disable_static()
            >>> x = paddle.to_tensor([1, 2, 3])
            >>> y = paddle.diag(x)
            >>> print(y)
            Tensor(shape=[3, 3], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[1, 0, 0],
             [0, 2, 0],
             [0, 0, 3]])

            >>> y = paddle.diag(x, offset=1)
            >>> print(y)
            Tensor(shape=[4, 4], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[0, 1, 0, 0],
             [0, 0, 2, 0],
             [0, 0, 0, 3],
             [0, 0, 0, 0]])

            >>> y = paddle.diag(x, padding_value=6)
            >>> print(y)
            Tensor(shape=[3, 3], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[1, 6, 6],
             [6, 2, 6],
             [6, 6, 3]])

        .. code-block:: python
            :name: diag-example-2

            >>> import paddle

            >>> paddle.disable_static()
            >>> x = paddle.to_tensor([[1, 2, 3], [4, 5, 6]])
            >>> y = paddle.diag(x)
            >>> print(y)
            Tensor(shape=[2], dtype=int64, place=Place(cpu), stop_gradient=True,
            [1, 5])

            >>> y = paddle.diag(x, offset=1)
            >>> print(y)
            Tensor(shape=[2], dtype=int64, place=Place(cpu), stop_gradient=True,
            [2, 6])

            >>> y = paddle.diag(x, offset=-1)
            >>> print(y)
            Tensor(shape=[1], dtype=int64, place=Place(cpu), stop_gradient=True,
            [4])
    """
    if in_dynamic_or_pir_mode():
        return _C_ops.diag(x, offset, padding_value)
    else:
        check_type(x, 'x', (Variable), 'diag_v2')
        check_dtype(
            x.dtype,
            'x',
            [
                'float16',
                'uint16',
                'float32',
                'float64',
                'uint16',
                'int32',
                'int64',
                'complex64',
                'complex128',
            ],
            'diag_v2',
        )
        check_type(offset, 'offset', (int), 'diag_v2')
        check_type(padding_value, 'padding_value', (int, float), 'diag_v2')
        if len(x.shape) != 1 and len(x.shape) != 2:
            raise ValueError(
                f"The dimension of input x must be either 1 or 2, but received {len(x.shape)}"
            )

        helper = LayerHelper("diag_v2", **locals())

        out = helper.create_variable_for_type_inference(dtype=x.dtype)

        helper.append_op(
            type='diag_v2',
            inputs={'X': x},
            outputs={'Out': out},
            attrs={'offset': offset, 'padding_value': padding_value},
        )

        out.stop_gradient = True
        return out


@size_args_decorator
def empty(
    shape: ShapeLike,
    dtype: DTypeLike | None = None,
    name: str | None = None,
    *,
    out: paddle.Tensor | None = None,
    device: PlaceLike | None = None,
    requires_grad: bool = False,
    pin_memory: bool = False,
) -> paddle.Tensor:
    """
    Returns a Tensor with uninitialized data which size is same as ``shape``.

    Args:
        shape (tuple|list|Tensor): Shape of the Tensor to be created. The data type is ``int32`` or ``int64`` .
            If ``shape`` is a list or tuple, each element of it should be integer or 0-D Tensor with shape [].
            If ``shape`` is an Tensor, it should be an 1-D Tensor which represents a list.
        dtype(np.dtype|str, optional): Data type of the output Tensor
            which can be bool, float16, float32, float64, int32, int64, complex64, complex128 if dtype is `None`, the data
            type of created Tensor use global default dtype (see ``get_default_dtype``
            for details).
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.
        out(Tensor, optional): The output tensor.
        device(PlaceLike|None, optional): The desired device of returned tensor.
            if None, uses the current device for the default tensor type (see paddle.device.set_device()).
            device will be the CPU for CPU tensor types and the current CUDA device for CUDA tensor types. Default: None.
        requires_grad(bool, optional):  If autograd should record operations on the returned tensor. Default: False.
        pin_memory(bool, optional): If set, return tensor would be allocated in the pinned memory. Works only for CPU tensors. Default: False

    Returns:
        Tensor: Tensor which is created according to ``shape`` and ``dtype``, and is uninitialized.

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> # shape is a list/tuple
            >>> data1 = paddle.empty(shape=[3, 2])
            >>> print(data1.numpy())
            >>> # doctest: +SKIP('change everytime')
            [[1. 1.]
             [1. 1.]
             [1. 1.]]

            >>> # shape is a Tensor
            >>> shape = paddle.to_tensor([3, 2])
            >>> data2 = paddle.empty(shape=shape)
            >>> print(data2.numpy())
            >>> # doctest: +SKIP('change everytime')
            [[1. 1.]
             [1. 1.]
             [1. 1.]]

            >>> # shape is a Tensor List
            >>> shape = [paddle.to_tensor(3), paddle.to_tensor(2)]
            >>> data3 = paddle.empty(shape=shape)
            >>> print(data3.numpy())
            >>> # doctest: +SKIP('change everytime')
            [[1. 1.]
             [1. 1.]
             [1. 1.]]
    """

    if dtype is None:
        dtype = paddle.get_default_dtype()

    dtype = convert_dtype(dtype)

    if in_dynamic_or_pir_mode():
        if in_dynamic_mode():
            shape = paddle.utils.convert_shape_to_list(shape)
        else:
            check_dtype(
                dtype,
                'dtype',
                [
                    'bool',
                    'float16',
                    'float32',
                    'float64',
                    'uint16',
                    'int8',
                    'int16',
                    'int32',
                    'int64',
                    'complex64',
                    'complex128',
                    'float8_e4m3fn',
                ],
                'empty',
            )

            paddle.utils.check_shape(shape)
            if isinstance(shape, np.ndarray):
                shape = shape.tolist()
            if isinstance(shape, (list, tuple)):
                if paddle.utils._contain_var(shape):
                    shape = paddle.utils.get_int_tensor_list(shape)
            elif isinstance(shape, paddle.pir.Value):
                pass
            else:
                raise TypeError("Shape only supports Value, or list, or tuple.")

        device = (
            _get_paddle_place(device)
            if device is not None
            else _current_expected_place()
        )
        if (
            pin_memory
            and in_dynamic_mode()
            and device is not None
            and not isinstance(
                device, (core.CUDAPinnedPlace, core.XPUPinnedPlace)
            )
        ):
            if isinstance(device, core.CUDAPlace) or (
                isinstance(device, core.Place) and device.is_gpu_place()
            ):
                device = core.CUDAPinnedPlace()
            elif isinstance(device, core.XPUPlace) or (
                isinstance(device, core.Place) and device.is_xpu_place()
            ):
                device = core.XPUPinnedPlace()
            else:
                raise RuntimeError(
                    f"Pinning memory is not supported for {device}"
                )
        tensor = _C_ops.empty(
            shape,
            convert_np_dtype_to_dtype_(dtype),
            device,
            out=out,
        )
        if pin_memory and in_dynamic_mode():
            tensor = tensor.pin_memory()
        if requires_grad is True:
            tensor.stop_gradient = False
            if out is not None:
                out.stop_gradient = False
        return tensor
    else:
        helper = LayerHelper("empty", **locals())
        inputs = {}

        check_dtype(
            dtype,
            'dtype',
            [
                'bool',
                'float16',
                'float32',
                'float64',
                'uint16',
                'int8',
                'int16',
                'int32',
                'int64',
                'complex64',
                'complex128',
                'float8_e4m3fn',
            ],
            'empty',
        )
        check_type(shape, 'shape', (Variable, list, tuple), 'empty')

        if isinstance(shape, Variable):
            check_dtype(shape.dtype, 'shape', ['int32', 'int64'], 'empty')

        attrs = {}
        paddle.utils.get_shape_tensor_inputs(
            inputs=inputs, attrs=attrs, shape=shape, op_type='empty'
        )

        out = helper.create_variable_for_type_inference(dtype=dtype)
        attrs['dtype'] = convert_np_dtype_to_dtype_(dtype)
        helper.append_op(
            type='empty',
            inputs=inputs,
            outputs={'Out': [out]},
            attrs=attrs,
            stop_gradient=True,
        )
        out.stop_gradient = True
        return out


@ParamAliasDecorator({"x": ["input"]})
def empty_like(
    x: paddle.Tensor,
    dtype: DTypeLike | None = None,
    name: str | None = None,
    *,
    device: PlaceLike | None = None,
    requires_grad: bool = False,
    pin_memory: bool = False,
) -> paddle.Tensor:
    """
    Returns a Tensor with uninitialized data which has identical shape of ``x`` and ``dtype``.
    If the ``dtype`` is None, the data type of Tensor is same with ``x``.

    .. note::
        Alias Support: The parameter name ``input`` can be used as an alias for ``x``.
        For example, ``empty_like(input=tensor_x)`` is equivalent to ``empty_like(x=tensor_x)``.

    Args:
        x(Tensor): The input tensor which specifies shape and data type. The data type can be bool, float16, float32, float64, int32, int64.
            Alias: ``input``.
        dtype(np.dtype|str, optional): The data type of output. The data type can be one
            of bool, float16, float32, float64, int32, int64. The default value is None, which means the output
            data type is the same as input.
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.
        device(PlaceLike|None, optional): The desired device of returned tensor.
            if None, uses the current device for the default tensor type (see paddle.device.set_device()).
            device will be the CPU for CPU tensor types and the current CUDA device for CUDA tensor types. Default: None.
        requires_grad(bool, optional):  If autograd should record operations on the returned tensor. Default: False.
        pin_memory(bool, optional): If set, return tensor would be allocated in the pinned memory. Works only for CPU tensors. Default: False

    Returns:
        Tensor: Tensor which is created according to ``x`` and ``dtype``, and is uninitialized.

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> paddle.set_device("cpu")  # and use cpu device

            >>> x = paddle.randn([2, 3], 'float32')
            >>> output = paddle.empty_like(x)
            >>> print(output)
            >>> # doctest: +SKIP('change everytime')
            [[1.8491974e+20 1.8037303e+28 1.7443726e+28]
             [4.9640171e+28 3.0186127e+32 5.6715899e-11]]
    """
    if dtype is None:
        dtype = x.dtype
    if device is None:
        device = x.place
    dtype = convert_dtype(dtype)

    if in_dynamic_or_pir_mode():
        device = (
            _get_paddle_place(device)
            if device is not None
            else _current_expected_place()
        )
        if (
            pin_memory
            and in_dynamic_mode()
            and device is not None
            and not isinstance(
                device, (core.CUDAPinnedPlace, core.XPUPinnedPlace)
            )
        ):
            if isinstance(device, core.CUDAPlace) or (
                isinstance(device, core.Place) and device.is_gpu_place()
            ):
                device = core.CUDAPinnedPlace()
            elif isinstance(device, core.XPUPlace) or (
                isinstance(device, core.Place) and device.is_xpu_place()
            ):
                device = core.XPUPinnedPlace()
            else:
                raise RuntimeError(
                    f"Pinning memory is not supported for {device}"
                )

        if in_dynamic_mode():
            x_shape = x.shape
        else:
            x_shape = paddle.shape(x)

        tensor = _C_ops.empty(
            x_shape,
            convert_np_dtype_to_dtype_(dtype),
            device,
        )
        if requires_grad is True:
            tensor.stop_gradient = False
        if pin_memory and in_dynamic_mode():
            tensor = tensor.pin_memory()
        return tensor

    else:
        helper = LayerHelper("empty_like", **locals())
        check_variable_and_dtype(
            x,
            'x',
            [
                'bool',
                'float16',
                'float32',
                'float64',
                'int8',
                'int16',
                'int32',
                'int64',
                'uint16',
                'complex64',
                'complex128',
            ],
            'empty_like',
        )
        check_dtype(
            dtype,
            'dtype',
            [
                'bool',
                'float16',
                'float32',
                'float64',
                'int8',
                'int16',
                'int32',
                'int64',
                'uint16',
                'complex64',
                'complex128',
            ],
            'empty_like',
        )
        out = helper.create_variable_for_type_inference(dtype=dtype)

        inputs = {}
        attrs = {}
        attrs['dtype'] = convert_np_dtype_to_dtype_(dtype)
        shape = paddle.shape(x)
        paddle.utils.get_shape_tensor_inputs(
            inputs=inputs, attrs=attrs, shape=shape, op_type='empty_like'
        )

        helper.append_op(
            type='empty',
            inputs=inputs,
            outputs={'Out': [out]},
            attrs=attrs,
            stop_gradient=True,
        )
        out.stop_gradient = True
        return out


def assign(x: TensorLike, output: paddle.Tensor | None = None) -> paddle.Tensor:
    """

    Copy value of the :attr:`x` to the :attr:`output`.

    Parameters:
        x (Tensor|np.ndarray|list|tuple|scalar): A Tensor, numpy ndarray, tuple/list of scalar,
            or scalar. Its data type can be float16, float32, float64, int32, int64 or bool. Note: the float64 data will be converted to float32 because of current platform protobuf
            data limitation.
        output (Tensor|None, optional): A Tensor. If :attr:`output` is None, a new Tensor will be created as :attr:`output`. Default: None.

    Returns:
        Tensor: A Tensor with the same shape, data type and value as :attr:`x`.

    Examples:
        .. code-block:: python

            >>> import paddle
            >>> import numpy as np
            >>> data = paddle.full(shape=[3, 2], fill_value=2.5, dtype='float64')
            >>> print(data.numpy())
            [[2.5 2.5]
             [2.5 2.5]
             [2.5 2.5]]
            >>> array = np.array([[1, 1], [3, 4], [1, 3]]).astype(
            ...     np.int64
            ... )
            >>> result1 = paddle.zeros(shape=[3, 3], dtype='float32')
            >>> paddle.assign(array, result1)
            >>> print(result1.numpy())
            [[1 1]
             [3 4]
             [1 3]]
            >>> result2 = paddle.assign(data)
            >>> print(result2.numpy())
            [[2.5 2.5]
             [2.5 2.5]
             [2.5 2.5]]
            >>> result3 = paddle.assign(np.array([[2.5, 2.5], [2.5, 2.5], [2.5, 2.5]], dtype='float32'))
            >>> print(result3.numpy())
            [[2.5 2.5]
             [2.5 2.5]
             [2.5 2.5]]
    """
    # speed up
    if x is output and isinstance(x, (Variable, paddle.pir.Value)):
        return x

    input = x
    helper = LayerHelper('assign', **locals())
    check_type(
        input,
        'input',
        (
            Variable,
            paddle.pir.Value,
            np.ndarray,
            list,
            tuple,
            float,
            int,
            bool,
        ),
        'assign',
    )

    if np.isscalar(input) and not isinstance(input, str):
        input = np.array([input])
    elif isinstance(input, (list, tuple)):
        input = np.array(input)
    # NOTE(Aurelius84): Why we judge core.DenseTensor?
    # In case of @to_static, a Tensor can be as input of `assign`,
    # but in_dynamic_mode()==False under @to_static, which means
    # isinstance(Tensor, Variable) == False. It will cause return None
    # after this api.
    if isinstance(input, (Variable, core.eager.Tensor, paddle.pir.Value)):
        if in_dynamic_or_pir_mode():
            if output is None:
                output = _C_ops.assign(input)
            else:
                _C_ops.assign_out_(input, output)
        else:
            check_dtype(
                input.dtype,
                'input',
                [
                    'float16',
                    'uint16',
                    'float32',
                    'float64',
                    'int16',
                    'int32',
                    'int64',
                    'uint8',
                    'int8',
                    'bool',
                    'complex64',
                    'complex128',
                ],
                'assign',
                '(When the type of input in assign is Variable.)',
            )
            if output is None:
                output = helper.create_variable_for_type_inference(
                    dtype=input.dtype
                )
            helper.append_op(
                type='assign', inputs={'X': [input]}, outputs={'Out': [output]}
            )
    elif isinstance(input, np.ndarray):
        # We now support the form of [var, VAR...] if the Var.shape=[1,]
        if len(input.shape) > 0 and any(
            isinstance(x, (Variable, paddle.pir.Value)) for x in input
        ):
            # We only deal with the case where the list is nested one level, convert all scalars into variables, and then use stack to process. It is necessary to ensure the consistency of types.
            if not all(
                x.shape == (1,)
                for x in input
                if isinstance(
                    x, (Variable, core.eager.Tensor, paddle.pir.Value)
                )
            ):
                raise TypeError(
                    "Unsupported paddle.assign([Variable, Variable...]) with non-scalar variable."
                )

            def convert_scalar(x):
                if not isinstance(
                    x, (Variable, core.eager.Tensor, paddle.pir.Value)
                ):
                    return assign(x)
                return x

            to_stack_list = list(map(convert_scalar, input))
            ret = paddle.stack(to_stack_list)
            ret = paddle.squeeze(ret, -1)
            return ret

        if input.dtype == 'object':
            """may be this form [[Var], [Var], [3], [4]], we reject them."""
            raise TypeError(
                "The type of received input == `object`, it is not supported to convert to tensor, such as [[Var], [Var], [3], [4]]"
            )

        dtype = convert_np_dtype_to_dtype_(input.dtype)
        check_dtype(
            dtype,
            'input',
            [
                'float32',
                'float64',
                'int32',
                'int64',
                'bool',
                'complex64',
                'complex128',
            ],
            'assign',
            '(When the type of input in assign is numpy array.)',
        )
        value_name = "values"
        values = input.ravel().tolist()
        max_element_num = 17179869184  # 17179869184 = 2**34
        if input.size > max_element_num:
            from paddle.jit.sot.utils.exceptions import SotExtraInfo

            sot_extra_info = SotExtraInfo(need_breakgraph=True)
            err = ValueError(
                "The size of input is too big. Please consider "
                "saving it to file and 'load_op' to load it"
            )
            sot_extra_info.attach(err)
            raise err
        if in_dynamic_or_pir_mode():
            if output is None:
                output = zeros(list(input.shape), dtype)
            if in_dynamic_mode():
                _C_ops.assign_value_(
                    output,
                    list(input.shape),
                    dtype,
                    values,
                    _current_expected_place(),
                )
            else:
                output = _C_ops.assign_value_(
                    output,
                    list(input.shape),
                    dtype,
                    values,
                    _current_expected_place(),
                )
        else:
            if output is None:
                output = helper.create_variable_for_type_inference(
                    dtype=input.dtype
                )
            helper.append_op(
                type='assign_value',
                outputs={'Out': [output]},
                attrs={
                    'dtype': dtype,
                    'shape': list(input.shape),
                    value_name: values,
                },
            )

    return output


def clone(x: paddle.Tensor, name: str | None = None) -> paddle.Tensor:
    """
    Returns a copy of input Tensor. It will always have a Tensor copy.

    In addition, This function is derivable, so gradients will flow back from the output to input.

    Parameters:
        x (Tensor): The input Tensor.
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.

    Returns:
        Tensor, A Tensor copied from ``input``.

    Examples:
        .. code-block:: python

            >>> import paddle
            >>> import numpy as np

            >>> x = paddle.ones([2])
            >>> x.stop_gradient = False
            >>> x.retain_grads()
            >>> clone_x = paddle.clone(x)
            >>> clone_x.retain_grads()

            >>> y = clone_x**3
            >>> y.backward()
            >>> print(clone_x.grad.numpy())  # type: ignore
            [3. 3.]
            >>> print(x.grad.numpy())  # type: ignore
            [3. 3.]
    """
    return x.clone()


# NOTE(zhiqiu): not public
def _memcpy(input, place=None, output=None) -> paddle.Tensor:
    """

    The OP copies the :attr:`input` to the :attr:`output`.
    NOTE: currently, only support CUDAPlace <-> CUDAPinnedPlace.

    Parameters:
        input (Tensor): A tensor. Its data type supports float16, float32, float64, int32, int64, and bool.
        device (Place): Target place for the output.
        output (Tensor, optional): A tensor. If :attr:`output` is None, a new tensor will
            be created as :attr:`output`. Default: None.

    Returns:
        Tensor, A tensor with the same shape, data type and value as :attr:`input`.

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> data = paddle.full(shape=[3, 2], fill_value=2.5, dtype='float64')
            >>> print(data.numpy())
            [[2.5 2.5]
             [2.5 2.5]
             [2.5 2.5]]
            >>> # doctest: +SKIP('NOTE(zhiqiu): not public')
            >>> result = paddle._memcpy(data, place=paddle.CPUPlace())
            >>> print(result2)
            [[2.5 2.5]
             [2.5 2.5]
             [2.5 2.5]]
    """
    dst_place_type = -1
    if place is None:
        dst_place_type = -1
    else:
        p = core.Place()
        p.set_place(place)
        if p.is_cpu_place():
            dst_place_type = 0
        elif p.is_gpu_place():
            dst_place_type = 1
        elif p.is_cuda_pinned_place():
            dst_place_type = 2
        elif p.is_xpu_place():
            dst_place_type = 3
        elif p.is_custom_place():
            dst_place_type = 4

    if in_pir_mode():
        return _C_ops.memcpy(input, dst_place_type)

    helper = LayerHelper('memcpy', **locals())
    check_type(input, 'input', (Variable), 'memcpy')

    if isinstance(input, (Variable, core.eager.Tensor)):
        check_dtype(
            input.dtype,
            'input',
            [
                'float16',
                'uint16',
                'float32',
                'float64',
                'int32',
                'int64',
                'uint8',
                'int8',
                'bool',
            ],
            'memcpy',
            '(When the type of input in memcpy is Variable.)',
        )
    if output is None:
        output = helper.create_variable_for_type_inference(dtype=input.dtype)

    attrs = {'dst_place_type': dst_place_type}
    helper.append_op(
        type='memcpy',
        inputs={'X': [input]},
        outputs={'Out': [output]},
        attrs=attrs,
    )
    return output


def complex(
    real: paddle.Tensor,
    imag: paddle.Tensor,
    name: str | None = None,
    *,
    out: paddle.Tensor | None = None,
) -> paddle.Tensor:
    """Return a complex tensor given the real and image component.

    Args:
        real (Tensor): The real component. The data type should be 'float32' or 'float64'.
        imag (Tensor): The image component. The data type should be the same as ``real``.
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.
        out(Tensor|None, optional): The output tensor. Default: None.

    Returns:
        Tensor, The output tensor. The data type is 'complex64' or 'complex128', with the same precision as ``real`` and ``imag``.

    Note:
        ``paddle.complex`` supports broadcasting. If you want know more about broadcasting, please refer to `Introduction to Tensor`_ .

        .. _Introduction to Tensor: ../../guides/beginner/tensor_en.html#chapter5-broadcasting-of-tensor

    Examples:
        .. code-block:: python

            >>> import paddle
            >>> x = paddle.arange(2, dtype=paddle.float32).unsqueeze(-1)
            >>> y = paddle.arange(3, dtype=paddle.float32)
            >>> z = paddle.complex(x, y)
            >>> print(z)
            Tensor(shape=[2, 3], dtype=complex64, place=Place(cpu), stop_gradient=True,
            [[0j    , 1j    , 2j    ],
             [(1+0j), (1+1j), (1+2j)]])
    """
    if in_dynamic_or_pir_mode():
        return _C_ops.complex(real, imag, out=out)
    else:
        check_variable_and_dtype(
            real, 'real', ['float32', 'float64'], 'complex'
        )
        check_variable_and_dtype(
            imag, 'imag', ['float32', 'float64'], 'complex'
        )

        op_type = "complex"
        helper = LayerHelper(op_type, **locals())
        inputs = {"X": real, "Y": imag}
        out = helper.create_variable_for_type_inference(
            dtype=_real_to_complex_dtype(real.dtype)
        )
        outputs = {"Out": out}
        attrs = {}
        helper.append_op(
            type=op_type, inputs=inputs, attrs=attrs, outputs=outputs
        )
        return out


def tril_indices(
    row: int, col: int, offset: int = 0, dtype='int64'
) -> paddle.Tensor:
    """
    Return the indices of the lower triangular part of the 2-D matrix
    whose row and col is known. Indices are ordered based on row and then columns.
    The lower triangular part of the matrix is defined as the elements on
    and below the diagonal.

    Args:
        row (int): The input x which is a int number describe the number of row of the matrix.
        col (int): The input x which is a int number describe the number of col of the matrix.
        offset (int, optional): The offset to consider, default value is 0.

            - If offset = 0, all elements on and below the main diagonal are retained.
            - If offset > 0, include just as many diagonals above the main diagonal.
            - If offset < 0, excludes just as many diagonals below the main diagonal.

        dtype (str|core.VarDesc.VarType|core.DataType, optional): the data type of the output tensor, can be int32, int64.

    Returns:
        Tensor: Results of the indices of lower triangular part of a row * col matrix,
        where the first row contains row coordinates of and the second row contains column coordinates.

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> # example 1, default offset value
            >>> data1 = paddle.tril_indices(4,4,0)
            >>> print(data1)
            Tensor(shape=[2, 10], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[0, 1, 1, 2, 2, 2, 3, 3, 3, 3],
             [0, 0, 1, 0, 1, 2, 0, 1, 2, 3]])

            >>> # example 2, positive offset value
            >>> data2 = paddle.tril_indices(4,4,2)
            >>> print(data2)
            Tensor(shape=[2, 15], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3],
             [0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3]])

            >>> # example 3, negative offset value
            >>> data3 = paddle.tril_indices(4,4,-1)
            >>> print(data3)
            Tensor(shape=[2, 6], dtype=int64, place=Place(cpu), stop_gradient=True,
            [[1, 2, 2, 3, 3, 3],
             [0, 0, 1, 0, 1, 2]])
    """
    if not isinstance(dtype, (core.VarDesc.VarType, core.DataType)):
        dtype = convert_np_dtype_to_dtype_(dtype)
    if not isinstance(row, int) or row < 0:
        raise TypeError("row should be a non-negative int")

    if col is not None:
        if not isinstance(col, int) or col < 0:
            raise TypeError("col should be a non-negative int")
    else:
        col = row

    if in_dynamic_or_pir_mode():
        if col is None:
            col = row
        out = _C_ops.tril_indices(
            row, col, offset, dtype, _current_expected_place()
        )
        return out
    else:
        if not isinstance(offset, int):
            raise TypeError("offset should be a  int")

        helper = LayerHelper("tril_indices", **locals())

        out = helper.create_variable_for_type_inference(dtype=dtype)

        helper.append_op(
            type='tril_indices',
            inputs={},
            outputs={'out': [out]},
            attrs={'rows': row, 'cols': col, 'offset': offset, 'dtype': dtype},
        )
    return out


def triu_indices(
    row: int, col: int | None = None, offset: int = 0, dtype='int64'
) -> paddle.Tensor:
    """
    Return the indices of the upper triangular part of the 2-D matrix
    whose row and col is known. Indices are ordered based on row and then columns.
    The upper triangular part of the matrix is defined as the elements on
    and above the diagonal.

    Args:
        row (int): The input x which is a int number describe the number of row of the matrix.
        col (int|None, optional): The input x which is a int number describe the number of col of the matrix.
            default value for col is None, then it will be set equal to row, indicting a square matrix.
        offset (int, optional): The offset to consider, default value is 0.

            - If offset = 0, all elements on and above the main diagonal are retained.
            - If offset > 0, include just as few diagonals above the main diagonal.
            - If offset < 0, excludes just as few diagonals below the main diagonal.

        dtype (str|np.dtype|core.VarDesc.VarType|core.DataType, optional): the data type of the output tensor,
            can be int32, int64, default value is int64.
    Returns:
        Tensor: Results of the indices of upper triangular part of a row * col matrix,
        where the first row contains row coordinates of and the second row contains column coordinates.

    Examples:
        .. code-block:: python

            >>> import paddle
            >>> # example 1, default offset value
            >>> data1 = paddle.triu_indices(4,4,0)
            >>> print(data1.numpy())
            [[0 0 0 0 1 1 1 2 2 3]
             [0 1 2 3 1 2 3 2 3 3]]
            >>> # example 2, positive offset value
            >>> data2 = paddle.triu_indices(4,4,2)
            >>> print(data2.numpy())
            [[0 0 1]
             [2 3 3]]
            >>> # example 3, negative offset value
            >>> data3 = paddle.triu_indices(4,4,-1)
            >>> print(data3.numpy())
            [[0 0 0 0 1 1 1 1 2 2 2 3 3]
             [0 1 2 3 0 1 2 3 1 2 3 2 3]]
    """

    if not isinstance(dtype, (core.VarDesc.VarType, core.DataType)):
        dtype = convert_np_dtype_to_dtype_(dtype)

    if not isinstance(row, int) or row < 0:
        raise TypeError("row should be a non-negative int")

    if col is not None:
        if not isinstance(col, int) or col < 0:
            raise TypeError("col should be a non-negative int")
    else:
        col = row

    if in_dynamic_or_pir_mode():
        if col is None:
            col = row
        out = _C_ops.triu_indices(
            row, col, offset, dtype, _current_expected_place()
        )
        return out
    else:
        if not isinstance(offset, int):
            raise TypeError("offset should be a int")

        helper = LayerHelper("triu_indices", **locals())

        out = helper.create_variable_for_type_inference(dtype=dtype)

        helper.append_op(
            type='triu_indices',
            inputs={},
            outputs={'out': [out]},
            attrs={'row': row, 'col': col, 'offset': offset, 'dtype': dtype},
        )
    return out


def polar(
    abs: paddle.Tensor,
    angle: paddle.Tensor,
    name: str | None = None,
    *,
    out: paddle.Tensor | None = None,
) -> paddle.Tensor:
    """Return a Cartesian coordinates corresponding to the polar coordinates complex tensor given the ``abs`` and ``angle`` component.

    Args:
        abs (Tensor): The abs component. The data type should be 'float32' or 'float64'.
        angle (Tensor): The angle component. The data type should be the same as ``abs``.
        name (str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.
        out (Tensor, optional): The output tensor. If set, the result will be stored in this tensor. Default is None.

    Returns:
        Tensor, The output tensor. The data type is 'complex64' or 'complex128', with the same precision as ``abs`` and ``angle``.

    Note:
        ``paddle.polar`` supports broadcasting. If you want know more about broadcasting, please refer to `Introduction to Tensor`_ .

        .. _Introduction to Tensor: ../../guides/beginner/tensor_en.html#chapter5-broadcasting-of-tensor

    Examples:
        .. code-block:: python

            >>> import paddle
            >>> import numpy as np

            >>> abs = paddle.to_tensor([1, 2], dtype=paddle.float64)
            >>> angle = paddle.to_tensor([np.pi / 2, 5 * np.pi / 4], dtype=paddle.float64)
            >>> out = paddle.polar(abs, angle)
            >>> print(out)
            Tensor(shape=[2], dtype=complex128, place=Place(cpu), stop_gradient=True,
            [ (6.123233995736766e-17+1j)             ,
             (-1.4142135623730954-1.414213562373095j)])
    """
    check_variable_and_dtype(abs, 'abs', ['float32', 'float64'], 'paddle.polar')
    check_variable_and_dtype(
        angle, 'angle', ['float32', 'float64'], 'paddle.polar'
    )

    return paddle.complex(
        abs * paddle.cos(angle), abs * paddle.sin(angle), out=out, name=name
    )


@dygraph_only
def cauchy_(
    x: paddle.Tensor,
    loc: Numeric = 0,
    scale: Numeric = 1,
    name: str | None = None,
) -> paddle.Tensor:
    """Fills the tensor with numbers drawn from the Cauchy distribution.

    Args:
        x (Tensor): the tensor will be filled, The data type is float32 or float64.
        loc (scalar, optional):  Location of the peak of the distribution. The data type is float32 or float64.
        scale (scalar, optional): The half-width at half-maximum (HWHM). The data type is float32 or float64. Must be positive values.
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.

    Returns:
        Tensor: input tensor with numbers drawn from the Cauchy distribution.

    Examples:
        .. code-block:: python

            >>> import paddle
            >>> x = paddle.randn([3, 4])
            >>> x.cauchy_(1, 2)
            >>> # doctest: +SKIP('random check')
            >>> print(x)
            Tensor(shape=[3, 4], dtype=float32, place=Place(cpu), stop_gradient=True,
            [[ 3.80087137,  2.25415039,  2.77960515,  7.64125967],
             [ 0.76541221,  2.74023032,  1.99383152, -0.12685823],
             [ 1.45228469,  1.76275957, -4.30458832, 34.74880219]])

    """
    x.normal_()
    loc = paddle.to_tensor(loc).astype(x.dtype)
    half = paddle.to_tensor(0.5).astype(x.dtype)
    x.subtract_(half).scale_(np.pi).tan_().scale_(scale).add_(loc)
    return x


@dygraph_only
def geometric_(
    x: paddle.Tensor,
    probs: float | paddle.Tensor,
    name: str | None = None,
) -> paddle.Tensor:
    """Fills the tensor with numbers drawn from the Geometric distribution.

    Args:
        x (Tensor): the tensor will be filled, The data type is float32 or float64.
        probs (float|Tensor): Probability parameter.
            The value of probs must be positive. When the parameter is a tensor, probs is probability of success for each trial.
        name(str|None, optional): For details, please refer to :ref:`api_guide_Name`. Generally, no setting is required. Default: None.

    Returns:
        Tensor: input tensor with numbers drawn from the Geometric distribution.

    Examples:
        .. code-block:: python

            >>> import paddle
            >>> x = paddle.randn([3, 4])
            >>> x.geometric_(0.3)
            >>> # doctest: +SKIP('random check')
            >>> print(x)
            Tensor(shape=[3, 4], dtype=float32, place=Place(cpu), stop_gradient=True,
            [[2.42739224, 4.78268528, 1.23302543, 3.76555204],
             [1.38877118, 0.16075331, 0.16401523, 2.47349310],
             [1.72872102, 2.76533413, 0.33410925, 1.63351011]])

    """
    tiny = np.finfo(dtype=convert_dtype(x.dtype)).tiny
    probs = paddle.to_tensor(probs).astype(x.dtype)
    x.uniform_(min=float(tiny), max=float(1))
    x.log_().divide_(paddle.log1p(-(probs)))
    return x


@inplace_apis_in_dygraph_only
def set_(
    x: paddle.Tensor,
    source: paddle.Tensor | None = None,
    shape: Sequence[int] | None = None,
    stride: Sequence[int] | None = None,
    offset: int = 0,
    name: str | None = None,
) -> paddle.Tensor:
    """
    set x with specified source Tensor's underlying storage, shape, stride and offset.

    Note that the ``x`` will share the same data with ``source`` Tensor.

    Args:
        x (Tensor): An arbitrary Tensor. The data type supports ``bfloat16``, ``float16``, ``float32``, ``float64``,
            ``bool``, ``int8``, ``int16``, ``int32``, ``int64``, ``uint8``, ``complex64`` or ``complex128``.
        source (Tensor|None, optional): Define the target Tensor to use. The data type supports `bfloat16`, ``float16``,
            ``float32``, ``float64``, ``bool``, ``int8``, ``int16``, ``int32``, ``int64``, ``uint8``, ``complex64`` or
            ``complex128``. Default: None, which means to set ``x`` with an empty source tensor.
        shape (list|tuple|None, optional): Define the target shape. Each element of it should be integer. Default: None,
            which means it will use the specified ``source``'s shape as default value.
        stride (list|tuple|None, optional): Define the target stride. Each element of it should be integer. Default: None,
            and when ``shape`` is also None, it will use the specified ``source``'s stride as default value; when ``shape``
            is specified, it will use the default stride corresponding to the specified ``shape``.
        offset (int, optional): Define the target offset from x's holder. Default: 0.
        name (str|None, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`.

    Returns:
        Tensor, the Tensor with the same data type as ``x``.

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> src = paddle.to_tensor([[11., 22., 33.]])
            >>> src2 = paddle.to_tensor([11., 22., 33., 44., 55., 66.])

            >>> x = paddle.to_tensor([1., 2., 3., 4., 5.])
            >>> x.set_()
            >>> print(x)
            Tensor(shape=[0], dtype=float32, place=Place(cpu), stop_gradient=True,
            [])

            >>> x = paddle.to_tensor([1., 2., 3., 4., 5.])
            >>> x.set_(src)
            >>> print(x)
            Tensor(shape=[1, 3], dtype=float32, place=Place(cpu), stop_gradient=True,
            [[11., 22., 33.]])

            >>> print(x._is_shared_buffer_with(src))
            True

            >>> x = paddle.to_tensor([1., 2., 3., 4., 5.])
            >>> x.set_(src, shape=[2, 1])
            >>> print(x)
            Tensor(shape=[2, 1], dtype=float32, place=Place(cpu), stop_gradient=True,
            [[11.],
             [22.]])

            >>> x = paddle.to_tensor([1., 2., 3., 4., 5.])
            >>> x.set_(src2, shape=[3], stride=[2])
            >>> print(x)
            Tensor(shape=[3], dtype=float32, place=Place(cpu), stop_gradient=True,
            [11., 33., 55.])

            >>> x = paddle.to_tensor([1., 2., 3., 4., 5.])
            >>> x.set_(src2, shape=[5], offset=4)
            >>> print(x)
            Tensor(shape=[5], dtype=float32, place=Place(cpu), stop_gradient=True,
            [22., 33., 44., 55., 66.])

    """
    if in_dynamic_mode():
        # set_ doesn't have backward op so EagerUtils::CheckInplace will not be
        # called in eager_generator.cc. Here to keep consistent with other inplace
        # op, manually check whether x is leaf node and doesn't stop gradient.
        if x.is_leaf and not x.stop_gradient:
            raise ValueError(
                f"(InvalidArgument) Leaf Tensor {x.name} that doesn't stop gradient can't use "
                "inplace strategy."
            )
        if source is None:
            source = paddle.empty([0], dtype=x.dtype)
            shape = [0]
            stride = [0]
        else:
            if not isinstance(source, (Variable, core.eager.Tensor)):
                raise ValueError(
                    f"Input (source) should be paddle.Tensor but received {type(source)}"
                )
            check_dtype(
                source.dtype,
                'source',
                [
                    'bool',
                    'float16',
                    'uint16',
                    'float32',
                    'float64',
                    'int8',
                    'int16',
                    'int32',
                    'int64',
                    'uint8',
                    'complex64',
                    'complex128',
                ],
                'set',
            )
        if stride is None:
            if shape is None:
                stride = source.strides
            else:
                stride = paddle.empty(shape).strides
        if shape is None:
            shape = source.shape

        return _C_ops.set_(x, source, shape, stride, offset)


@inplace_apis_in_dygraph_only
def resize_(
    x: paddle.Tensor,
    shape: Sequence[int],
    fill_zero: bool = False,
    name: str | None = None,
) -> paddle.Tensor:
    """
    Resize ``x`` with specified ``shape``.

    Args:
        x (Tensor): An arbitrary Tensor. The data type supports ``bfloat16``, ``float16``, ``float32``, ``float64``,
            ``bool``, ``int8``, ``int16``, ``int32``, ``int64``, ``uint8``, ``complex64`` or ``complex128``.
        shape (list|tuple): Define the target shape. Each element of it should be integer.
        fill_zero (bool, optional): If the size of specified ``shape`` is greater than the original Tensor size, the
            new Tensor will be filled with zero if ``fill_zero`` is True. Default: False, which means the filled value
            will be undetermined.
        name (str|None, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`.

    Returns:
        Tensor, the resized Tensor.

    Examples:
        .. code-block:: python

            >>> import paddle

            >>> x = paddle.to_tensor([1., 2., 3.])
            >>> x.resize_([2, 1])
            >>> print(x)
            Tensor(shape=[2, 1], dtype=float32, place=Place(cpu), stop_gradient=True,
            [[1.],
             [2.]])

            >>> x = paddle.to_tensor([1., 2., 3.])
            >>> x.resize_([2, 3], fill_zero=True)
            >>> print(x)
            Tensor(shape=[2, 3], dtype=float32, place=Place(cpu), stop_gradient=True,
            [[1., 2., 3.],
             [0., 0., 0.]])

    """
    if in_dynamic_mode():
        check_dtype(
            x.dtype,
            'x',
            [
                'bool',
                'float16',
                'uint16',
                'float32',
                'float64',
                'int8',
                'int16',
                'int32',
                'int64',
                'uint8',
                'complex64',
                'complex128',
            ],
            'resize',
        )
        if not isinstance(shape, (list, tuple)):
            raise ValueError(
                f"Input (shape) should be list or tuple but received {type(shape)}"
            )
        new_size = math.prod(shape)
        old_size = math.prod(x.shape)
        if (new_size > old_size) and fill_zero:
            repeats = -(-new_size // old_size)  # ceil division
            flatten_x = x.flatten()
            tmp = paddle.concat(
                (flatten_x,) + (paddle.zeros_like(flatten_x),) * (repeats - 1)
            )[:new_size]
            return x.set_(tmp, shape)

        return x.set_(x, shape)


def dtype_tensor_factory(dtype):
    class _DtypeTensorFactory:
        def __new__(cls, *args, **kwargs):
            if len(args) == 0:
                return paddle.empty(shape=[0], dtype=dtype)
            elif len(args) == 1 and isinstance(args[0], (list, tuple)):
                return paddle.tensor(args[0], dtype=dtype)
            elif all(isinstance(arg, int) for arg in args):
                return paddle.empty(shape=list(args), dtype=dtype)
            else:
                kwargs.setdefault('dtype', dtype)
                return paddle.Tensor(*args, **kwargs)

    return _DtypeTensorFactory


FloatTensor = dtype_tensor_factory('float32')
DoubleTensor = dtype_tensor_factory('float64')
HalfTensor = dtype_tensor_factory('float16')
BFloat16Tensor = dtype_tensor_factory('bfloat16')
ByteTensor = dtype_tensor_factory('uint8')
CharTensor = dtype_tensor_factory('int8')
ShortTensor = dtype_tensor_factory('int16')
IntTensor = dtype_tensor_factory('int32')
LongTensor = dtype_tensor_factory('int64')
BoolTensor = dtype_tensor_factory('bool')