# Copyright (c) 2020 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. """ math functions """ from __future__ import print_function import numpy as np from paddle.common_ops_import import * from paddle.tensor import cast import paddle from ..fluid import layers from ..fluid.framework import core, _varbase_creator, in_dygraph_mode, Variable, convert_np_dtype_to_dtype_ from ..fluid.layer_helper import LayerHelper from ..fluid.data_feeder import check_variable_and_dtype, check_type, check_dtype, convert_dtype from ..fluid.layers.layer_function_generator import _generate_doc_string_, generate_activation_fn, generate_layer_fn # TODO: define math functions # yapf: disable from ..fluid.layers import abs #DEFINE_ALIAS from ..fluid.layers import acos #DEFINE_ALIAS from ..fluid.layers import asin #DEFINE_ALIAS from ..fluid.layers import ceil #DEFINE_ALIAS from ..fluid.layers import cos #DEFINE_ALIAS from ..fluid.layers import sinh #DEFINE_ALIAS from ..fluid.layers import cosh #DEFINE_ALIAS # from ..fluid.layers import elementwise_add #DEFINE_ALIAS # from ..fluid.layers import elementwise_div #DEFINE_ALIAS # from ..fluid.layers import elementwise_floordiv #DEFINE_ALIAS # from ..fluid.layers import elementwise_mod #DEFINE_ALIAS # from ..fluid.layers import elementwise_mul #DEFINE_ALIAS # from ..fluid.layers import elementwise_pow #DEFINE_ALIAS # from ..fluid.layers import elementwise_sub #DEFINE_ALIAS from ..fluid.layers import exp #DEFINE_ALIAS from ..fluid.layers import floor #DEFINE_ALIAS from ..fluid.layers import log #DEFINE_ALIAS from ..fluid.layers import reciprocal #DEFINE_ALIAS # from ..fluid.layers import reduce_max #DEFINE_ALIAS # from ..fluid.layers import reduce_min #DEFINE_ALIAS # from ..fluid.layers import reduce_prod #DEFINE_ALIAS # from ..fluid.layers import reduce_sum #DEFINE_ALIAS from ..fluid.layers import round #DEFINE_ALIAS from ..fluid.layers import rsqrt #DEFINE_ALIAS from ..fluid.layers import scale #DEFINE_ALIAS from ..fluid.layers import square #DEFINE_ALIAS from ..fluid.layers import stanh #DEFINE_ALIAS from ..fluid.layers import atan #DEFINE_ALIAS from ..fluid.layers import erf #DEFINE_ALIAS from ..fluid.layers import sqrt #DEFINE_ALIAS from ..fluid.layers import sin #DEFINE_ALIAS from ..fluid.layers import multiplex #DEFINE_ALIAS from ..fluid import layers __all__ = [ 'abs', 'acos', 'all', 'any', 'asin', 'atan', 'ceil', 'cos', 'cosh', 'cumsum', 'exp', 'floor', 'increment', 'log', 'log2', 'log10', 'logsumexp', 'mul', 'multiplex', 'pow', 'prod', 'reciprocal', 'round', 'rsqrt', 'scale', 'sign', 'sin', 'sinh', 'sqrt', 'square', 'stanh', 'sum', 'tanh', 'add_n', 'max', 'maximum', 'min', 'minimum', 'mm', 'divide', 'floor_divide', 'remainder', 'mod', 'floor_mod', 'multiply', 'add', 'subtract', 'atan', 'logsumexp', 'inverse', 'log1p', 'erf', 'addmm', 'clip', 'trace', 'kron', 'isfinite', 'isinf', 'isnan', 'broadcast_shape', 'conj' ] # yapf: enable. _supported_int_dtype_ = [ VarDesc.VarType.UINT8, VarDesc.VarType.INT8, VarDesc.VarType.INT16, VarDesc.VarType.INT32, VarDesc.VarType.INT64, ] _supported_float_dtype_ = [ VarDesc.VarType.FP32, VarDesc.VarType.FP64, ] def pow(x, y, name=None): """ Compute the power of tensor elements. The equation is: .. math:: out = x^{y} **Note**: ``paddle.pow`` supports broadcasting. If you want know more about broadcasting, please refer to :ref:`user_guide_broadcasting` . Args: x (Tensor): An N-D Tensor, the data type is float32, float64, int32 or int64. y (float|int|Tensor): If it is an N-D Tensor, its data type should be the same as `x`. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: N-D Tensor. A location into which the result is stored. Its dimension and data type are the same as `x`. Examples: .. code-block:: python import paddle x = paddle.to_tensor([1, 2, 3], dtype='float32') # example 1: y is a float or int res = paddle.pow(x, 2) print(res) # Tensor(shape=[3], dtype=float32, place=CUDAPlace(0), stop_gradient=True, # [1., 4., 9.]) res = paddle.pow(x, 2.5) print(res) # Tensor(shape=[3], dtype=float32, place=CUDAPlace(0), stop_gradient=True, # [1. , 5.65685415 , 15.58845711]) # example 2: y is a Tensor y = paddle.to_tensor([2], dtype='float32') res = paddle.pow(x, y) print(res) # Tensor(shape=[3], dtype=float32, place=CUDAPlace(0), stop_gradient=True, # [1., 4., 9.]) """ # in dynamic graph mode if in_dygraph_mode(): if isinstance(y, (int, float)): return core.ops.pow(x, 'factor', y) elif isinstance(y, (paddle.Tensor, Variable)): return _elementwise_op_in_dygraph( x, y, axis=-1, act=None, op_name='elementwise_pow') else: raise TypeError('y must be scalar or tensor type, but received: %s '% (y.dtype)) # in static graph mode else: if isinstance(y, (int, float)): helper = LayerHelper('pow', **locals()) inputs = {'X': x} attrs = {'factor': y} out = helper.create_variable_for_type_inference(dtype=x.dtype) helper.append_op( type='pow', inputs=inputs, outputs={'Out': out}, attrs=attrs) return out elif isinstance(y, (paddle.Tensor, Variable)): # TODO A potential speed improvement is supporting different types in C++ and removing the cast ops here helper = LayerHelper('elementwise_pow', **locals()) out = helper.create_variable_for_type_inference(dtype=x.dtype) return _elementwise_op(LayerHelper('elementwise_pow', **locals())) else: raise TypeError('y must be scalar or tensor type, but received: %s '% (type(y))) @dygraph_only def _elementwise_op_in_dygraph(x, y, axis=-1, act=None, use_mkldnn=False, op_name=None): op = getattr(core.ops, op_name) out = op(x, y, 'axis', axis, 'use_mkldnn', use_mkldnn) return dygraph_utils._append_activation_in_dygraph( out, act, use_mkldnn=use_mkldnn) def _elementwise_op(helper): op_type = helper.layer_type original_op_type = helper.kwargs.get('original_op_type', op_type) x = helper.kwargs.get('x', None) y = helper.kwargs.get('y', None) out = helper.kwargs.get('out', None) assert x is not None, 'x cannot be None in {}'.format(original_op_type) assert y is not None, 'y cannot be None in {}'.format(original_op_type) check_variable_and_dtype( x, 'x', ['float16', 'float32', 'float64', 'int32', 'int64'], original_op_type) check_variable_and_dtype( y, 'y', ['float16', 'float32', 'float64', 'int32', 'int64'], original_op_type) axis = helper.kwargs.get('axis', -1) use_mkldnn = helper.kwargs.get('use_mkldnn', False) name = helper.kwargs.get('name', None) if out is 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=op_type, inputs={'X': x, 'Y': y}, outputs={'Out': out}, attrs={'axis': axis, 'use_mkldnn': use_mkldnn}) return helper.append_activation(out) def add(x, y, name=None): """ Examples: .. code-block:: python import paddle x = paddle.to_tensor([2, 3, 4], 'float64') y = paddle.to_tensor([1, 5, 2], 'float64') z = paddle.add(x, y) print(z) # [3., 8., 6. ] """ op_type = 'elementwise_add' axis = -1 if in_dygraph_mode(): return _elementwise_op_in_dygraph( x, y, axis=axis, op_name=op_type) return _elementwise_op(LayerHelper(op_type, **locals())) def subtract(x, y, name=None): """ Substract two tensors element-wise. The equation is: .. math:: out = x - y **Note**: ``paddle.subtract`` supports broadcasting. If you want know more about broadcasting, please refer to :ref:`user_guide_broadcasting` . Args: x (Tensor): the input tensor, it's data type should be float32, float64, int32, int64. y (Tensor): the input tensor, it's data type should be float32, float64, int32, int64. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: N-D Tensor. A location into which the result is stored. If x, y have different shapes and are "broadcastable", the resulting tensor shape is the shape of x and y after broadcasting. If x, y have the same shape, its shape is the same as x and y. Examples: .. code-block:: python import numpy as np import paddle x = paddle.to_tensor([[1, 2], [7, 8]]) y = paddle.to_tensor([[5, 6], [3, 4]]) res = paddle.subtract(x, y) print(res) # [[-4, -4], # [4, 4]] x = paddle.to_tensor([[[1, 2, 3], [1, 2, 3]]]) y = paddle.to_tensor([1, 0, 4]) res = paddle.subtract(x, y) print(res) # [[[ 0, 2, -1], # [ 0, 2, -1]]] x = paddle.to_tensor([2, np.nan, 5], dtype='float32') y = paddle.to_tensor([1, 4, np.nan], dtype='float32') res = paddle.subtract(x, y) print(res) # [ 1., nan, nan] x = paddle.to_tensor([5, np.inf, -np.inf], dtype='float64') y = paddle.to_tensor([1, 4, 5], dtype='float64') res = paddle.subtract(x, y) print(res) # [ 4., inf., -inf.] """ op_type = 'elementwise_sub' axis = -1 act = None if in_dygraph_mode(): return _elementwise_op_in_dygraph( x, y, axis=axis, act=act, op_name=op_type) return _elementwise_op(LayerHelper(op_type, **locals())) def divide(x, y, name=None): """ Divide two tensors element-wise. The equation is: .. math:: out = x / y **Note**: ``paddle.divide`` supports broadcasting. If you want know more about broadcasting, please refer to :ref:`user_guide_broadcasting` . Args: x (Tensor): the input tensor, it's data type should be float32, float64, int32, int64. y (Tensor): the input tensor, it's data type should be float32, float64, int32, int64. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: N-D Tensor. A location into which the result is stored. If x, y have different shapes and are "broadcastable", the resulting tensor shape is the shape of x and y after broadcasting. If x, y have the same shape, its shape is the same as x and y. Examples: .. code-block:: python import paddle x = paddle.to_tensor([2, 3, 4], dtype='float64') y = paddle.to_tensor([1, 5, 2], dtype='float64') z = paddle.divide(x, y) print(z) # [2., 0.6, 2.] """ op_type = 'elementwise_div' axis = -1 act = None if in_dygraph_mode(): return _elementwise_op_in_dygraph( x, y, axis=axis, act=act, op_name=op_type) return _elementwise_op(LayerHelper(op_type, **locals())) def floor_divide(x, y, name=None): """ Floor divide two tensors element-wise. The equation is: .. math:: out = x // y **Note**: ``paddle.floor_divide`` supports broadcasting. If you want know more about broadcasting, please refer to :ref:`user_guide_broadcasting` . Args: x (Tensor): the input tensor, it's data type should be int32, int64. y (Tensor): the input tensor, it's data type should be int32, int64. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: N-D Tensor. A location into which the result is stored. It's dimension equals with $x$. Examples: .. code-block:: python import paddle x = paddle.to_tensor([2, 3, 8, 7]) y = paddle.to_tensor([1, 5, 3, 3]) z = paddle.floor_divide(x, y) print(z) # [2, 0, 2, 2] """ op_type = 'elementwise_floordiv' axis = -1 if in_dygraph_mode(): return _elementwise_op_in_dygraph( x, y, axis=axis, op_name=op_type) return _elementwise_op(LayerHelper(op_type, **locals())) def remainder(x, y, name=None): r""" Mod two tensors element-wise. The equation is: .. math:: out = x \% y **Note**: ``paddle.remainder`` supports broadcasting. If you want know more about broadcasting, please refer to :ref:`user_guide_broadcasting` . Args: x (Tensor): the input tensor, it's data type should be float32, float64, int32, int64. y (Tensor): the input tensor, it's data type should be float32, float64, int32, int64. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: N-D Tensor. A location into which the result is stored. If x, y have different shapes and are "broadcastable", the resulting tensor shape is the shape of x and y after broadcasting. If x, y have the same shape, its shape is the same as x and y. Examples: .. code-block:: python import paddle x = paddle.to_tensor([2, 3, 8, 7]) y = paddle.to_tensor([1, 5, 3, 3]) z = paddle.remainder(x, y) print(z) # [0, 3, 2, 1] """ op_type = 'elementwise_mod' axis = -1 if in_dygraph_mode(): return _elementwise_op_in_dygraph( x, y, axis=axis, op_name=op_type) return _elementwise_op(LayerHelper(op_type, **locals())) mod = remainder #DEFINE_ALIAS floor_mod = remainder #DEFINE_ALIAS def multiply(x, y, name=None): """ multiply two tensors element-wise. The equation is: .. math:: out = x * y **Note**: ``paddle.multiply`` supports broadcasting. If you would like to know more about broadcasting, please refer to :ref:`user_guide_broadcasting` . Args: x (Tensor): the input tensor, its data type should be float32, float64, int32, int64. y (Tensor): the input tensor, its data type should be float32, float64, int32, int64. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: N-D Tensor. A location into which the result is stored. If x, y have different shapes and are "broadcastable", the resulting tensor shape is the shape of x and y after broadcasting. If x, y have the same shape, its shape is the same as x and y. Examples: .. code-block:: python import paddle x = paddle.to_tensor([[1, 2], [3, 4]]) y = paddle.to_tensor([[5, 6], [7, 8]]) res = paddle.multiply(x, y) print(res) # [[5, 12], [21, 32]] x = paddle.to_tensor([[[1, 2, 3], [1, 2, 3]]]) y = paddle.to_tensor([2]) res = paddle.multiply(x, y) print(res) # [[[2, 4, 6], [2, 4, 6]]] """ op_type = 'elementwise_mul' act = None axis = -1 if in_dygraph_mode(): return _elementwise_op_in_dygraph( x, y, axis=axis, act=act, op_name=op_type) if x.dtype != y.dtype: raise TypeError( 'Input tensors must be same type, but received type of x: %s, type of y: %s ' % (x.dtype, y.dtype)) return _elementwise_op(LayerHelper(op_type, **locals())) def maximum(x, y, name=None): """ Compare two tensors and returns a new tensor containing the element-wise maxima. The equation is: .. math:: out = max(x, y) **Note**: ``paddle.maximum`` supports broadcasting. If you want know more about broadcasting, please refer to :ref:`user_guide_broadcasting` . Args: x (Tensor): the input tensor, it's data type should be float32, float64, int32, int64. y (Tensor): the input tensor, it's data type should be float32, float64, int32, int64. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: N-D Tensor. A location into which the result is stored. If x, y have different shapes and are "broadcastable", the resulting tensor shape is the shape of x and y after broadcasting. If x, y have the same shape, its shape is the same as x and y. Examples: .. code-block:: python import numpy as np import paddle x = paddle.to_tensor([[1, 2], [7, 8]]) y = paddle.to_tensor([[3, 4], [5, 6]]) res = paddle.maximum(x, y) print(res) # [[3, 4], # [7, 8]] x = paddle.to_tensor([[1, 2, 3], [1, 2, 3]]) y = paddle.to_tensor([3, 0, 4]) res = paddle.maximum(x, y) print(res) # [[3, 2, 4], # [3, 2, 4]] x = paddle.to_tensor([2, 3, 5], dtype='float32') y = paddle.to_tensor([1, np.nan, np.nan], dtype='float32') res = paddle.maximum(x, y) print(res) # [ 2., nan, nan] x = paddle.to_tensor([5, 3, np.inf], dtype='float32') y = paddle.to_tensor([1, -np.inf, 5], dtype='float32') res = paddle.maximum(x, y) print(res) # [ 5., 3., inf.] """ op_type = 'elementwise_max' axis = -1 act = None if in_dygraph_mode(): return _elementwise_op_in_dygraph( x, y, axis=axis, act=act, op_name=op_type) return _elementwise_op(LayerHelper(op_type, **locals())) def minimum(x, y, name=None): """ Compare two tensors and returns a new tensor containing the element-wise minima. The equation is: .. math:: out = min(x, y) **Note**: ``paddle.minimum`` supports broadcasting. If you want know more about broadcasting, please refer to :ref:`user_guide_broadcasting` . Args: x (Tensor): the input tensor, it's data type should be float32, float64, int32, int64. y (Tensor): the input tensor, it's data type should be float32, float64, int32, int64. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: N-D Tensor. A location into which the result is stored. If x, y have different shapes and are "broadcastable", the resulting tensor shape is the shape of x and y after broadcasting. If x, y have the same shape, its shape is the same as x and y. Examples: .. code-block:: python import numpy as np import paddle x = paddle.to_tensor([[1, 2], [7, 8]]) y = paddle.to_tensor([[3, 4], [5, 6]]) res = paddle.minimum(x, y) print(res) # [[1, 2], # [5, 6]] x = paddle.to_tensor([[[1, 2, 3], [1, 2, 3]]]) y = paddle.to_tensor([3, 0, 4]) res = paddle.minimum(x, y) print(res) # [[[1, 0, 3], # [1, 0, 3]]] x = paddle.to_tensor([2, 3, 5], dtype='float32') y = paddle.to_tensor([1, np.nan, np.nan], dtype='float32') res = paddle.minimum(x, y) print(res) # [ 1., nan, nan] x = paddle.to_tensor([5, 3, np.inf], dtype='float64') y = paddle.to_tensor([1, -np.inf, 5], dtype='float64') res = paddle.minimum(x, y) print(res) # [ 1., -inf., 5.] """ op_type = 'elementwise_min' axis = -1 act = None if in_dygraph_mode(): return _elementwise_op_in_dygraph( x, y, axis=axis, act=act, op_name=op_type) return _elementwise_op(LayerHelper(op_type, **locals())) for func in [ add, multiply ]: proto_dict = {'add': 'elementwise_add', 'multiply': 'elementwise_mul'} op_proto = OpProtoHolder.instance().get_op_proto(proto_dict[func.__name__]) additional_args_lines = [ "name (string, optional): Name of the output. \ Default is None. It's used to print debug info for developers. Details: \ :ref:`api_guide_Name` " ] func.__doc__ = _generate_doc_string_( op_proto, additional_args_lines=additional_args_lines, skip_attrs_set={"x_data_format", "y_data_format", "axis", "use_quantizer", "mkldnn_data_type", "Scale_x", "Scale_y", "Scale_out" }) + """\n""" + str(func.__doc__) def sum(x, axis=None, dtype=None, keepdim=False, name=None): """ Computes the sum of tensor elements over the given dimension. Args: x (Tensor): An N-D Tensor, the data type is float32, float64, int32 or int64. axis (int|list|tuple, optional): The dimensions along which the sum is performed. If :attr:`None`, sum all elements of :attr:`x` and return a Tensor with a single element, otherwise must be in the range :math:`[-rank(x), rank(x))`. If :math:`axis[i] < 0`, the dimension to reduce is :math:`rank + axis[i]`. dtype (str, optional): The dtype of output Tensor. The default value is None, the dtype of output is the same as input Tensor `x`. keepdim (bool, optional): Whether to reserve the reduced dimension in the output Tensor. The result Tensor will have one fewer dimension than the :attr:`x` unless :attr:`keepdim` is true, default value is False. name (str, 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` Returns: Tensor: Results of summation operation on the specified axis of input Tensor `x`, it's data type is the same as `x`. Raises: ValueError: If the data type of `x` is float64, :attr:`dtype` can not be float32 or int32. ValueError: If the data type of `x` is int64, :attr:`dtype` can not be int32. TypeError: The type of :attr:`axis` must be int, list or tuple. Examples: .. code-block:: python import paddle # x is a Tensor with following elements: # [[0.2, 0.3, 0.5, 0.9] # [0.1, 0.2, 0.6, 0.7]] # Each example is followed by the corresponding output tensor. x = paddle.to_tensor([[0.2, 0.3, 0.5, 0.9], [0.1, 0.2, 0.6, 0.7]]) out1 = paddle.sum(x) # [3.5] out2 = paddle.sum(x, axis=0) # [0.3, 0.5, 1.1, 1.6] out3 = paddle.sum(x, axis=-1) # [1.9, 1.6] out4 = paddle.sum(x, axis=1, keepdim=True) # [[1.9], [1.6]] # y is a Tensor with shape [2, 2, 2] and elements as below: # [[[1, 2], [3, 4]], # [[5, 6], [7, 8]]] # Each example is followed by the corresponding output tensor. y = paddle.to_tensor([[[1, 2], [3, 4]], [[5, 6], [7, 8]]]) out5 = paddle.sum(y, axis=[1, 2]) # [10, 26] out6 = paddle.sum(y, axis=[0, 1]) # [16, 20] """ if axis is not None and not isinstance(axis, (list, tuple)): axis = [axis] if not axis: reduce_all_flag = True else: if len(axis) == len(x.shape): reduce_all_flag = True else: reduce_all_flag = False attrs = { 'dim': axis if axis != None and axis != [] and axis != () else [0], 'keep_dim': keepdim, 'reduce_all': reduce_all_flag } dtype_flag = False if dtype is not None: if dtype in ['float64', 'int64']: if (convert_dtype(x.dtype) == "float32" and dtype == "float64") or \ (convert_dtype(x.dtype) == "int32" and dtype == "int64"): attrs.update({ 'in_dtype': x.dtype, 'out_dtype': convert_np_dtype_to_dtype_(dtype) }) dtype_flag = True if in_dygraph_mode(): axis = axis if axis != None and axis != [] else [0] if dtype_flag: return core.ops.reduce_sum(x, 'dim', axis, 'keep_dim', keepdim, 'reduce_all', reduce_all_flag, 'in_dtype', x.dtype, 'out_dtype', convert_np_dtype_to_dtype_(dtype)) else: return core.ops.reduce_sum(x, 'dim', axis, 'keep_dim', keepdim, 'reduce_all', reduce_all_flag) check_variable_and_dtype( x, 'x', ['float32', 'float64', 'int32', 'int64'], 'sum') if dtype is not None: check_dtype(dtype, 'dtype', ['float32', 'float64', 'int32', 'int64'], 'sum') x_dtype = convert_dtype(x.dtype) if (x_dtype == "float64" and dtype in ["float32", "int32"]) or \ (x_dtype == "int64" and dtype == "int32"): raise ValueError("The input(x)'s dtype is {} but the attr(dtype) of sum is {}, " "which may cause data type overflows. Please reset attr(dtype) of sum." .format(x_dtype, dtype)) check_type(axis, 'axis', (int, list, tuple, type(None)), 'sum') helper = LayerHelper('sum', **locals()) if dtype_flag: out = helper.create_variable_for_type_inference( dtype=convert_np_dtype_to_dtype_(dtype)) else: out = helper.create_variable_for_type_inference(dtype=x.dtype) helper.append_op( type='reduce_sum', inputs={'X': x}, outputs={'Out': out}, attrs=attrs) return out @templatedoc(op_type="sum") def add_n(inputs, name=None): """ This OP is used to sum one or more Tensor of the input. For example: .. code-block:: text Case 1: Input: input.shape = [2, 3] input = [[1, 2, 3], [4, 5, 6]] Output: output.shape = [2, 3] output = [[1, 2, 3], [4, 5, 6]] Case 2: Input: First input: input1.shape = [2, 3] Input1 = [[1, 2, 3], [4, 5, 6]] The second input: input2.shape = [2, 3] input2 = [[7, 8, 9], [10, 11, 12]] Output: output.shape = [2, 3] output = [[8, 10, 12], [14, 16, 18]] Args: inputs (Tensor|list(Tensor)): A Tensor list. The shape and data type of the list elements should be consistent. Input can be multi-dimensional Tensor, and data types can be: float32, float64, int32, int64. name(str, 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` Returns: Tensor, the sum of input :math:`inputs` , its shape and data types are consistent with :math:`inputs`. Examples: .. code-block:: python import paddle input0 = paddle.to_tensor([[1, 2, 3], [4, 5, 6]], dtype='float32') input1 = paddle.to_tensor([[7, 8, 9], [10, 11, 12]], dtype='float32') output = paddle.add_n([input0, input1]) # [[8., 10., 12.], # [14., 16., 18.]] """ if in_dygraph_mode(): if isinstance(inputs, Variable): inputs = [inputs] return core.ops.sum(inputs, 'use_mkldnn', False) helper = LayerHelper('add_n', **locals()) check_type(inputs, 'inputs', (Variable, tuple, list), 'add_n') if isinstance(inputs, list) or isinstance(inputs, tuple): if len(inputs) > 0: for input in inputs: check_variable_and_dtype(input, "inputs", \ ['float32', 'float64', 'int32', 'int64'], 'add_n') else: check_variable_and_dtype(inputs, "inputs", \ ['float32', 'float64', 'int32', 'int64'], 'add_n') out = helper.create_variable_for_type_inference( dtype=helper.input_dtype('inputs')) helper.append_op( type='sum', inputs={'X': inputs}, outputs={'Out': out}, attrs={'use_mkldnn': False}) return out def mm(input, mat2, name=None): """ Applies matrix multiplication to two tensors. Currently, the input tensors' rank can be any, but when the rank of any inputs is bigger than 3, this two inputs' rank should be equal. Also note that if the raw tensor :math:`x` or :math:`mat2` is rank-1 and nontransposed, the prepended or appended dimension :math:`1` will be removed after matrix multiplication. This op does not support broadcasting. See paddle.matmul. Args: input (Tensor): The input tensor which is a Tensor. mat2 (Tensor): The input tensor which is a Tensor. name(str, 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` Returns: Tensor: The product Tensor. Examples: .. code-block:: python import paddle input = paddle.arange(1, 7).reshape((3, 2)).astype('float32') mat2 = paddle.arange(1, 9).reshape((2, 4)).astype('float32') out = paddle.mm(input, mat2) print(out) # [[11., 14., 17., 20.], # [23., 30., 37., 44.], # [35., 46., 57., 68.]]) """ if in_dygraph_mode(): out = _varbase_creator(dtype=input.dtype) core.ops.matmul(input, mat2, out) return out def __check_input(x, y): var_names = {'x': x, 'y': y} for name, val in var_names.items(): check_variable_and_dtype(val, name, ['float16', 'float32', 'float64'], 'mm') x_shape = list(x.shape) y_shape = list(y.shape) if len(x_shape) == 1: x_shape = [1] + x_shape if len(y_shape) == 1: y_shape = y_shape + [1] # check the inner 2 dimensions if x_shape[-1] != y_shape[-2]: if not ((x_shape[-1] == -1) or (y_shape[-2] == -1)): raise ValueError( "After performing an optional transpose, Input X's width should be " "equal to Y's width for multiplication " "prerequisites. But received X's shape: %s, Y's shape: %s\n" % (x_shape, y_shape)) if len(y_shape) > 2 and len(x_shape) > 2: for i, dim_x in enumerate(x_shape[:-2]): # don't check neg shape if dim_x < 0 or y_shape[i] < 0: continue if dim_x != y_shape[i]: raise ValueError( "When the matrix is larger than 2 dimensions, the higher " "dimensional values of the two matrices need to be equal. " "But received x_shape[%d] != y_shape[%d]. X's shape: %s, " "Y's shape: %s.\n" % (i, i, x_shape, y_shape)) __check_input(input, mat2) helper = LayerHelper('mm', **locals()) out = helper.create_variable_for_type_inference(dtype=input.dtype) helper.append_op( type='matmul', inputs={'X': input, 'Y': mat2}, outputs={'Out': out}) return out def addmm(input, x, y, beta=1.0, alpha=1.0, name=None): """ **addmm** This operator is used to perform matrix multiplication for input $x$ and $y$. $input$ is added to the final result. The equation is: .. math:: Out = alpha * x * y + beta * input $Input$, $x$ and $y$ can carry the LoD (Level of Details) information, or not. But the output only shares the LoD information with input $input$. Args: input (Tensor): The input Tensor to be added to the final result. x (Tensor): The first input Tensor for matrix multiplication. y (Tensor): The second input Tensor for matrix multiplication. beta (float): Coefficient of $input$. alpha (float): Coefficient of $x*y$. name (str, optional): Name of the output. Normally there is no need for user to set this property. For more information, please refer to :ref:`api_guide_Name`. Default is None. Returns: Tensor: The output Tensor of addmm op. Examples: .. code-block:: python import paddle x = paddle.ones([2,2]) y = paddle.ones([2,2]) input = paddle.ones([2,2]) out = paddle.addmm( input=input, x=x, y=y, beta=0.5, alpha=5.0 ) print(out) # [[10.5 10.5] # [10.5 10.5]] """ input_shape = input.shape x_shape = x.shape y_shape = y.shape if not len(input_shape) == len(x_shape) == len(y_shape) == 2: raise ValueError("The dimention of input, x, y should be 2 but receive input's shape: {}, x's shape: {}, y's shape: {}".format(input_shape, x_shape, y_shape)) if input_shape[0] != x_shape[0]: if input_shape[0] != 1: raise ValueError( "When x's dimension[0] is not equal with input's dimension[0], input's dimension[0] must be 1 but got {}".format(input_shape[0])) if input_shape[1] != y_shape[1] and input_shape[1] != 1: raise ValueError( "When y's dimension[1] is not equal with input's dimension[1], input's dimension[1] must be 1 but got {}".format(input_shape[1])) if input_shape[1] != y_shape[1]: if input_shape[1] != 1: raise ValueError( "When y's dimension[1] is not equal with input's dimension[1], input's dimension[1] must be 1 but got {}".format(input_shape[1])) if input_shape[0] != x_shape[0] and input_shape[0] != 1: raise ValueError( "When x's dimension[0] is not equal with input's dimension[0], input's dimension[0] must be 1 but got {}".format(input_shape[0])) if x_shape[1] != y_shape[0]: raise ValueError("The input Variable x's width must be equal with Variable y' height. But received x's shape = {}, y's shape = {}.".format(x_shape, y_shape)) if in_dygraph_mode(): out = core.ops.addmm(input, x, y, "Alpha", alpha, "Beta", beta) return out inputs = {'Input': input, "X": x, "Y": y} attrs = {'Alpha': alpha, 'Beta': beta} helper = LayerHelper("addmm", **locals()) check_variable_and_dtype(input, 'Input', ['float32', 'float64'], 'addmm') check_variable_and_dtype(x, 'X', ['float32', 'float64'], 'addmm') check_variable_and_dtype(y, 'Y', ['float32', 'float64'], 'addmm') out = helper.create_variable_for_type_inference(dtype=x.dtype) helper.append_op( type="addmm", inputs=inputs, attrs=attrs, outputs={"Out": out}) return out def logsumexp(x, axis=None, keepdim=False, name=None): r""" This OP calculates the log of the sum of exponentials of ``x`` along ``axis`` . .. math:: logsumexp(x) = \\log\\sum exp(x) Args: x (Tensor): The input Tensor with data type float32, float64. axis (int|list|tuple, optional): The axis along which to perform logsumexp calculations. ``axis`` should be int, list(int) or tuple(int). If ``axis`` is a list/tuple of dimension(s), logsumexp is calculated along all element(s) of ``axis`` . ``axis`` or element(s) of ``axis`` should be in range [-D, D), where D is the dimensions of ``x`` . If ``axis`` or element(s) of ``axis`` is less than 0, it works the same way as :math:`axis + D` . If ``axis`` is None, logsumexp is calculated along all elements of ``x``. Default is None. keepdim (bool, optional): Whether to reserve the reduced dimension(s) in the output Tensor. If ``keep_dim`` is True, the dimensions of the output Tensor is the same as ``x`` except in the reduced dimensions(it is of size 1 in this case). Otherwise, the shape of the output Tensor is squeezed in ``axis`` . Default is False. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: Tensor, results of logsumexp along ``axis`` of ``x``, with the same data type as ``x``. Examples: .. code-block:: python import paddle x = paddle.to_tensor([[-1.5, 0., 2.], [3., 1.2, -2.4]]) out1 = paddle.logsumexp(x) # [3.4691226] out2 = paddle.logsumexp(x, 1) # [2.15317821, 3.15684602] """ if isinstance(axis, int): axis = [axis] reduce_all = True if axis is None \ or len(axis)==0 \ or len(axis) == len(x.shape) else False if axis is None or len(axis) == 0: axis = [0] if in_dygraph_mode(): return core.ops.logsumexp(x, 'axis', axis, 'keepdim', keepdim, 'reduce_all', reduce_all) check_variable_and_dtype(x, 'x', ['float32', 'float64'], 'logsumexp') helper = LayerHelper('logsumexp', **locals()) attrs = {'axis': axis, 'keepdim': keepdim, 'reduce_all':reduce_all} out = helper.create_variable_for_type_inference(x.dtype) helper.append_op( type='logsumexp', inputs={'X': x}, outputs={'Out': out}, attrs=attrs) return out def inverse(x, name=None): """ Takes the inverse of the square matrix. A square matrix is a matrix with the same number of rows and columns. The input can be a square matrix (2-D Tensor) or batches of square matrices. Args: x (Tensor): The input tensor. The last two dimensions should be equal. When the number of dimensions is greater than 2, it is treated as batches of square matrix. The data type can be float32 and float64. name (str, 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` Returns: Tensor: A Tensor holds the inverse of x. The shape and data type is the same as x. Examples: .. code-block:: python import paddle mat = paddle.to_tensor([[2, 0], [0, 2]], dtype='float32') inv = paddle.inverse(mat) print(inv) # [[0.5, 0], [0, 0.5]] """ if in_dygraph_mode(): return core.ops.inverse(x) def _check_input(x): check_variable_and_dtype(x, 'x', ['float32', 'float64'], 'inverse') if len(x.shape) < 2: raise ValueError( "The input of inverse is expected to be a Tensor whose number " "of dimensions is no less than 2. But reviced: %d, " "x's shape: %s." % (len(x.shape), x.shape)) _check_input(x) helper = LayerHelper('inverse', **locals()) out = helper.create_variable_for_type_inference(dtype=x.dtype) helper.append_op( type='inverse', inputs={'Input': [x] }, outputs={'Output': [out]}) return out def max(x, axis=None, keepdim=False, name=None): """ Computes the maximum of tensor elements over the given axis. Args: x(Tensor): A tensor, the data type is float32, float64, int32, int64. axis(list|int, optional): The axis along which the maximum is computed. If :attr:`None`, compute the maximum over all elements of `x` and return a Tensor with a single element, otherwise must be in the range :math:`[-x.ndim(x), x.ndim(x))`. If :math:`axis[i] < 0`, the axis to reduce is :math:`x.ndim + axis[i]`. keepdim(bool, optional): Whether to reserve the reduced dimension in the output Tensor. The result tensor will have one fewer dimension than the `x` unless :attr:`keepdim` is true, default value is False. name(str, 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` Returns: Tensor, results of maximum on the specified axis of input tensor, it's data type is the same as `x`. Examples: .. code-block:: python import paddle # data_x is a Tensor with shape [2, 4] # the axis is a int element x = paddle.to_tensor([[0.2, 0.3, 0.5, 0.9], [0.1, 0.2, 0.6, 0.7]]) result1 = paddle.max(x) print(result1) #[0.9] result2 = paddle.max(x, axis=0) print(result2) #[0.2 0.3 0.6 0.9] result3 = paddle.max(x, axis=-1) print(result3) #[0.9 0.7] result4 = paddle.max(x, axis=1, keepdim=True) print(result4) #[[0.9] # [0.7]] # data_y is a Tensor with shape [2, 2, 2] # the axis is list y = paddle.to_tensor([[[1.0, 2.0], [3.0, 4.0]], [[5.0, 6.0], [7.0, 8.0]]]) result5 = paddle.max(y, axis=[1, 2]) print(result5) #[4. 8.] result6 = paddle.max(y, axis=[0, 1]) print(result6) #[7. 8.] """ if axis is not None and not isinstance(axis, list): if isinstance(axis, tuple): axis = list(axis) elif isinstance(axis, int): axis= [axis] else: raise TypeError( "The type of axis must be int, list or tuple, but received {}".format(type(axis))) reduce_all = True if axis == None or axis == [] else False axis = axis if axis != None and axis != [] else [0] if in_dygraph_mode(): return core.ops.reduce_max(x, 'dim', axis, 'keep_dim', keepdim, 'reduce_all', reduce_all) helper = LayerHelper('max', **locals()) check_variable_and_dtype( x, 'x', ['float32', 'float64', 'int32', 'int64'], 'max') out = helper.create_variable_for_type_inference( dtype=x.dtype) helper.append_op( type='reduce_max', inputs={'X': x}, outputs={'Out': out}, attrs={ 'dim': axis, 'keep_dim': keepdim, 'reduce_all': reduce_all }) return out def min(x, axis=None, keepdim=False, name=None): """ Computes the minimum of tensor elements over the given axis Args: x(Tensor): A tensor, the data type is float32, float64, int32, int64. axis(list|int, optional): The axis along which the minimum is computed. If :attr:`None`, compute the minimum over all elements of `x` and return a Tensor with a single element, otherwise must be in the range :math:`[-x.ndim, x.ndim)`. If :math:`axis[i] < 0`, the axis to reduce is :math:`x.ndim + axis[i]`. keepdim(bool, optional): Whether to reserve the reduced dimension in the output Tensor. The result tensor will have one fewer dimension than the `x` unless :attr:`keepdim` is true, default value is False. name(str, 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` Returns: Tensor, results of minimum on the specified axis of input tensor, it's data type is the same as input's Tensor. Examples: .. code-block:: python import paddle # x is a tensor with shape [2, 4] # the axis is a int element x = paddle.to_tensor([[0.2, 0.3, 0.5, 0.9], [0.1, 0.2, 0.6, 0.7]]) result1 = paddle.min(x) print(result1) #[0.1] result2 = paddle.min(x, axis=0) print(result2) #[0.1 0.2 0.5 0.7] result3 = paddle.min(x, axis=-1) print(result3) #[0.2 0.1] result4 = paddle.min(x, axis=1, keepdim=True) print(result4) #[[0.2] # [0.1]] # y is a Tensor with shape [2, 2, 2] # the axis is list y = paddle.to_tensor([[[1.0, 2.0], [3.0, 4.0]], [[5.0, 6.0], [7.0, 8.0]]]) result5 = paddle.min(y, axis=[1, 2]) print(result5) #[1. 5.] result6 = paddle.min(y, axis=[0, 1]) print(result6) #[1. 2.] """ if axis is not None and not isinstance(axis, list): if isinstance(axis, tuple): axis = list(axis) elif isinstance(axis, int): axis= [axis] else: raise TypeError( "The type of axis must be int, list or tuple, but received {}".format(type(axis))) reduce_all = True if axis == None or axis == [] else False axis = axis if axis != None and axis != [] else [0] if in_dygraph_mode(): return core.ops.reduce_min(x, 'dim', axis, 'keep_dim', keepdim, 'reduce_all', reduce_all) helper = LayerHelper('min', **locals()) check_variable_and_dtype( x, 'x', ['float32', 'float64', 'int32', 'int64'], 'min') out = helper.create_variable_for_type_inference( dtype=x.dtype) helper.append_op( type='reduce_min', inputs={'X': x}, outputs={'Out': out}, attrs={ 'dim': axis, 'keep_dim': keepdim, 'reduce_all': reduce_all }) return out def log1p(x, name=None): r""" Calculates the natural log of the given input tensor, element-wise. .. math:: Out = \\ln(x+1) Args: x (Tensor): Input Tensor. Must be one of the following types: float32, float64. name(str, 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` Returns: Tensor, the natural log of the input Tensor computed element-wise. Examples: .. code-block:: python import paddle data = paddle.to_tensor([[0], [1]], dtype='float32') res = paddle.log1p(data) # [[0.], [0.6931472]] """ if in_dygraph_mode(): return core.ops.log1p(x) check_variable_and_dtype(x, 'x', ['float32', 'float64'], "log1p") inputs = {'X': [x]} helper = LayerHelper('log1p', **locals()) dtype = helper.input_dtype(input_param_name='x') out = helper.create_variable_for_type_inference(dtype) helper.append_op(type="log1p", inputs={"X": x}, outputs={"Out": out}) return out def log2(x, name=None): r""" Calculates the log to the base 2 of the given input tensor, element-wise. .. math:: Out = \\log_2x Args: x (Tensor): Input tensor must be one of the following types: float32, float64. name (str|None): 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: The log to the base 2 of the input Tensor computed element-wise. Examples: .. code-block:: python import paddle # example 1: x is a float x_i = paddle.to_tensor([[1.0], [2.0]]) res = paddle.log2(x_i) # [[0.], [1.0]] # example 2: x is float32 x_i = paddle.full(shape=[1], fill_value=2, dtype='float32') paddle.to_tensor(x_i) res = paddle.log2(x_i) print(res) # [1.0] # example 3: x is float64 x_i = paddle.full(shape=[1], fill_value=2, dtype='float64') paddle.to_tensor(x_i) res = paddle.log2(x_i) print(res) # [1.0] """ if in_dygraph_mode(): return core.ops.log2(x) check_variable_and_dtype(x, 'x', ['float16', 'float32', 'float64'], "log2") inputs = {'X': [x]} helper = LayerHelper('log2', **locals()) dtype = helper.input_dtype(input_param_name='x') out = helper.create_variable_for_type_inference(dtype) helper.append_op(type="log2", inputs={"X": x}, outputs={"Out": out}) return out def log10(x, name=None): r""" Calculates the log to the base 10 of the given input tensor, element-wise. .. math:: Out = \\log_10_x Args: x (Tensor): Input tensor must be one of the following types: float32, float64. name (str|None): 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: The log to the base 10 of the input Tensor computed element-wise. Examples: .. code-block:: python import paddle # example 1: x is a float x_i = paddle.to_tensor([[1.0], [10.0]]) res = paddle.log10(x_i) # [[0.], [1.0]] # example 2: x is float32 x_i = paddle.full(shape=[1], fill_value=10, dtype='float32') paddle.to_tensor(x_i) res = paddle.log10(x_i) print(res) # [1.0] # example 3: x is float64 x_i = paddle.full(shape=[1], fill_value=10, dtype='float64') paddle.to_tensor(x_i) res = paddle.log10(x_i) print(res) # [1.0] """ if in_dygraph_mode(): return core.ops.log10(x) check_variable_and_dtype(x, 'x', ['float16', 'float32', 'float64'], "log10") inputs = {'X': [x]} helper = LayerHelper('log10', **locals()) dtype = helper.input_dtype(input_param_name='x') out = helper.create_variable_for_type_inference(dtype) helper.append_op(type="log10", inputs={"X": x}, outputs={"Out": out}) return out def clip(x, min=None, max=None, name=None): """ This operator clip all elements in input into the range [ min, max ] and return a resulting tensor as the following equation: .. math:: Out = MIN(MAX(x, min), max) Args: x (Tensor): An N-D Tensor with data type float32 or float64. min (float32|Tensor): The lower bound with type ``float32`` or a ``Tensor`` with shape [1] and type ``int32``, ``float32``, ``float64``. max (float32|Tensor): The upper bound with type ``float32`` or a ``Tensor`` with shape [1] and type ``int32``, ``float32``, ``float64``. name (str, 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`. Returns: Tensor: A Tensor with the same data type and data shape as input. Examples: .. code-block:: python import paddle x1 = paddle.to_tensor([[1.2, 3.5], [4.5, 6.4]], 'float32') out1 = paddle.clip(x1, min=3.5, max=5.0) out2 = paddle.clip(x1, min=2.5) print(out1) # [[3.5, 3.5] # [4.5, 5.0]] print(out2) # [[2.5, 3.5] # [[4.5, 6.4] """ fmin = float(np.finfo(np.float32).min) fmax = float(np.finfo(np.float32).max) if in_dygraph_mode(): if isinstance(min, Variable): min = min.numpy().item(0) if isinstance(max, Variable): max = max.numpy().item(0) min = fmin if min is None else min max = fmax if max is None else max return core.ops.clip(x, "min", min, "max", max) if min is not None: check_type(min, 'min', (float, int, Variable), 'clip') if isinstance(min, Variable): check_dtype(min.dtype, 'min', ['float32', 'float64', 'int32'], 'clip', '(When the type of min in clip is Variable.)') if max is not None: check_type(max, 'max', (float, int, Variable), 'clip') if isinstance(max, Variable): check_dtype(max.dtype, 'max', ['float32', 'float64', 'int32'], 'clip', '(When the type of max in clip is Variable.)') check_variable_and_dtype(x, 'x', ['float32', 'float64'], 'clip') inputs = {'X': x} attrs = {'min': fmin, 'max': fmax} if isinstance(min, Variable): min.stop_gradient = True inputs['Min'] = min elif min is not None: attrs['min'] = min if isinstance(max, Variable): max.stop_gradient = True inputs['Max'] = max elif max is not None: attrs['max'] = max helper = LayerHelper('clip', **locals()) output = helper.create_variable_for_type_inference( dtype=helper.input_dtype('x')) helper.append_op( type='clip', inputs=inputs, outputs={'Out': [output]}, attrs=attrs) return output def trace(x, offset=0, axis1=0, axis2=1, name=None): """ **trace** This OP computes the sum along diagonals of the input tensor x. If ``x`` is 2D, returns the sum of diagonal. If ``x`` has larger dimensions, then returns an tensor of diagonals sum, diagonals be taken from the 2D planes specified by axis1 and axis2. By default, the 2D planes formed by the first and second axes of the input tensor x. The argument ``offset`` determines where diagonals are taken from input tensor x: - 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. - Note that if offset is out of input's shape indicated by axis1 and axis2, 0 will be returned. Args: x(Tensor): The input tensor x. Must be at least 2-dimensional. The input data type should be float32, float64, int32, int64. offset(int, optional): Which diagonals in input tensor x will be taken. Default: 0 (main diagonals). axis1(int, optional): The first axis with respect to take diagonal. Default: 0. axis2(int, optional): The second axis with respect to take diagonal. Default: 1. name (str, optional): Normally there is no need for user to set this property. For more information, please refer to :ref:`api_guide_Name`. Default: None. Returns: Tensor: the output data type is the same as input data type. Examples: .. code-block:: python import paddle case1 = paddle.randn([2, 3]) case2 = paddle.randn([3, 10, 10]) case3 = paddle.randn([3, 10, 5, 10]) data1 = paddle.trace(case1) # data1.shape = [1] data2 = paddle.trace(case2, offset=1, axis1=1, axis2=2) # data2.shape = [3] data3 = paddle.trace(case3, offset=-3, axis1=1, axis2=-1) # data2.shape = [3, 5] """ inputs = {'Input': [x]} attrs = {'offset': offset, 'axis1': axis1, 'axis2': axis2} def __check_input(input, offset, dim1, dim2): check_dtype(x.dtype, 'Input', ['int32', 'int64', 'float16', 'float32', 'float64'], 'trace') input_shape = list(x.shape) assert len(input_shape) >= 2, \ "The x must be at least 2-dimensional, " \ "But received Input x's dimensional: %s.\n" % \ len(input_shape) axis1_ = axis1 if axis1 >= 0 else len(input_shape) + axis1 axis2_ = axis2 if axis2 >= 0 else len(input_shape) + axis2 assert axis1_ < len(input_shape), \ "The argument axis1 is out of range (expected to be in range of [%d, %d], but got %d).\n" \ % (-(len(input_shape)), len(input_shape) - 1, axis1) assert axis2_ < len(input_shape), \ "The argument axis2 is out of range (expected to be in range of [%d, %d], but got %d).\n" \ % (-(len(input_shape)), len(input_shape) - 1, axis2) assert axis1_ != axis2_, \ "axis1 and axis2 cannot be the same axis." \ "But received axis1 = %d, axis2 = %d\n"%(axis1, axis2) if in_dygraph_mode(): return core.ops.trace(x, 'offset', offset, 'axis1', axis1, 'axis2', axis2) if not in_dygraph_mode(): __check_input(input, offset, axis1, axis2) helper = LayerHelper('trace', **locals()) out = helper.create_variable_for_type_inference(dtype=x.dtype) helper.append_op( type='trace', inputs={'Input': [x]}, attrs={'offset': offset, 'axis1': axis1, 'axis2': axis2}, outputs={'Out': [out]}) return out @templatedoc(op_type="kron") def kron(x, y, name=None): """ ${comment} Args: x (Tensor): the fist operand of kron op, data type: float16, float32, float64, int32 or int64. y (Tensor): the second operand of kron op, data type: float16, float32, float64, int32 or int64. Its data type should be the same with x. name(str, 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`. Returns: Tensor: The output of kron op, data type: float16, float32, float64, int32 or int64. Its data is the same with x. Examples: .. code-block:: python import paddle x = paddle.to_tensor([[1, 2], [3, 4]], dtype='int64') y = paddle.to_tensor([[1, 2, 3], [4, 5, 6], [7, 8, 9]], dtype='int64') out = paddle.kron(x, y) print(out) # [[1, 2, 3, 2, 4, 6], # [ 4, 5, 6, 8, 10, 12], # [ 7, 8, 9, 14, 16, 18], # [ 3, 6, 9, 4, 8, 12], # [12, 15, 18, 16, 20, 24], # [21, 24, 27, 28, 32, 36]]) """ if in_dygraph_mode(): return core.ops.kron(x, y) helper = LayerHelper('kron', **locals()) check_variable_and_dtype(x, 'x', ['float16', 'float32', 'float64', 'int32', 'int64'], 'kron') check_variable_and_dtype(y, 'y', ['float16', 'float32', 'float64', 'int32', 'int64'], 'kron') out = helper.create_variable_for_type_inference(dtype=x.dtype) helper.append_op(type="kron", inputs={"X": x, "Y": y}, outputs={"Out": out}) return out def cumsum(x, axis=None, dtype=None, name=None): """ The cumulative sum of the elements along a given axis. **Note**: The first element of the result is the same of the first element of the input. Args: x (Tensor): The input tensor needed to be cumsumed. axis (int, optional): The dimension to accumulate along. -1 means the last dimension. The default (None) is to compute the cumsum over the flattened array. dtype (str, optional): The data type of the output tensor, can be float32, float64, int32, int64. If specified, the input tensor is casted to dtype before the operation is performed. This is useful for preventing data type overflows. The default value is None. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: Tensor, the result of cumsum operator. Examples: .. code-block:: python import paddle data = paddle.arange(12) data = paddle.reshape(data, (3, 4)) y = paddle.cumsum(data) # [ 0 1 3 6 10 15 21 28 36 45 55 66] y = paddle.cumsum(data, axis=0) # [[ 0 1 2 3] # [ 4 6 8 10] # [12 15 18 21]] y = paddle.cumsum(data, axis=-1) # [[ 0 1 3 6] # [ 4 9 15 22] # [ 8 17 27 38]] y = paddle.cumsum(data, dtype='float64') print(y.dtype) # VarType.FP64 """ if axis is None: flatten = True else: flatten = False if dtype is not None and x.dtype != convert_np_dtype_to_dtype_(dtype): x = layers.cast(x, dtype) if in_dygraph_mode(): if axis is None: return core.ops.cumsum(x, 'flatten', flatten) else: return core.ops.cumsum(x, 'axis', axis, 'flatten', flatten) check_type(x, 'x', (Variable), 'cumsum') locals_var = locals().copy() kwargs = dict() for name, val in locals_var.items(): if val is not None: kwargs[name] = val _cum_sum_ = generate_layer_fn('cumsum') return _cum_sum_(**kwargs) def isfinite(x, name=None): """ Return whether every element of input tensor is finite number or not. Args: x (Tensor): The input tensor, it's data type should be float16, float32, float64, int32, int64. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: `Tensor`, the bool result which shows every element of `x` whether it is finite number or not. Examples: .. code-block:: python import paddle x = paddle.to_tensor([float('-inf'), -2, 3.6, float('inf'), 0, float('-nan'), float('nan')]) out = paddle.tensor.isfinite(x) print(out) # [False True True False True False False] """ if in_dygraph_mode(): return core.ops.isfinite_v2(x) helper = LayerHelper("isfinite_v2", **locals()) check_variable_and_dtype(x, 'x', ['float16', 'float32', 'float64', 'int32', 'int64'], 'isfinite') out = helper.create_variable_for_type_inference('bool') helper.append_op(type="isfinite_v2", inputs={"X": x}, outputs={"Out": out}) return out def isinf(x, name=None): """ Return whether every element of input tensor is `+/-INF` or not. Args: x (Tensor): The input tensor, it's data type should be float16, float32, float64, int32, int64. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: `Tensor`, the bool result which shows every element of `x` whether it is `+/-INF` or not. Examples: .. code-block:: python import paddle x = paddle.to_tensor([float('-inf'), -2, 3.6, float('inf'), 0, float('-nan'), float('nan')]) out = paddle.tensor.isinf(x) print(out) # [ True False False True False False False] """ if in_dygraph_mode(): return core.ops.isinf_v2(x) helper = LayerHelper("isinf_v2", **locals()) check_variable_and_dtype(x, 'x', ['float16', 'float32', 'float64', 'int32', 'int64'], 'isinf') out = helper.create_variable_for_type_inference(dtype='bool') helper.append_op(type="isinf_v2", inputs={"X": x}, outputs={"Out": out}) return out def isnan(x, name=None): """ Return whether every element of input tensor is `NaN` or not. Args: x (Tensor): The input tensor, it's data type should be float16, float32, float64, int32, int64. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: `Tensor`, the bool result which shows every element of `x` whether it is `NaN` or not. Examples: .. code-block:: python import paddle x = paddle.to_tensor([float('-inf'), -2, 3.6, float('inf'), 0, float('-nan'), float('nan')]) out = paddle.tensor.isnan(x) print(out) # [False False False False False True True] """ if in_dygraph_mode(): return core.ops.isnan_v2(x) helper = LayerHelper("isnan_v2", **locals()) check_variable_and_dtype(x, 'x', ['float16', 'float32', 'float64', 'int32', 'int64'], 'isnan') out = helper.create_variable_for_type_inference(dtype='bool') helper.append_op(type="isnan_v2", inputs={"X": x}, outputs={"Out": out}) return out def prod(x, axis=None, keepdim=False, dtype=None, name=None): """ Compute the product of tensor elements over the given axis. Args: x(Tensor): The input tensor, its data type should be float32, float64, int32, int64. axis(int|list|tuple, optional): The axis along which the product is computed. If :attr:`None`, multiply all elements of `x` and return a Tensor with a single element, otherwise must be in the range :math:`[-x.ndim, x.ndim)`. If :math:`axis[i]<0`, the axis to reduce is :math:`x.ndim + axis[i]`. Default is None. dtype(str|np.dtype, optional): The desired date type of returned tensor, can be float32, float64, int32, int64. If specified, the input tensor is casted to dtype before operator performed. This is very useful for avoiding data type overflows. The default value is None, the dtype of output is the same as input Tensor `x`. keepdim(bool, optional): Whether to reserve the reduced dimension in the output Tensor. The result tensor will have one fewer dimension than the input unless `keepdim` is true. Default is False. 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` . Returns: Tensor, result of product on the specified dim of input tensor. Raises: ValueError: The :attr:`dtype` must be float32, float64, int32 or int64. TypeError: The type of :attr:`axis` must be int, list or tuple. Examples: .. code-block:: python import paddle # the axis is a int element x = paddle.to_tensor([[0.2, 0.3, 0.5, 0.9], [0.1, 0.2, 0.6, 0.7]]) out1 = paddle.prod(x) # [0.0002268] out2 = paddle.prod(x, -1) # [0.027 0.0084] out3 = paddle.prod(x, 0) # [0.02 0.06 0.3 0.63] out4 = paddle.prod(x, 0, keepdim=True) # [[0.02 0.06 0.3 0.63]] out5 = paddle.prod(x, 0, dtype='int64') # [0 0 0 0] # the axis is list y = paddle.to_tensor([[[1.0, 2.0], [3.0, 4.0]], [[5.0, 6.0], [7.0, 8.0]]]) out6 = paddle.prod(y, [0, 1]) # [105. 384.] out7 = paddle.prod(y, (1, 2)) # [ 24. 1680.] """ if dtype is not None: check_dtype(dtype, 'dtype', ['float32', 'float64', 'int32', 'int64'], 'prod') if x.dtype != convert_np_dtype_to_dtype_(dtype): x = layers.cast(x, dtype) return layers.reduce_prod(input=x, dim=axis, keep_dim=keepdim, name=name) def sign(x, name=None): """ This OP returns sign of every element in `x`: 1 for positive, -1 for negative and 0 for zero. Args: x(Tensor): The input tensor. The data type can be float16, float32 or float64. name (str, 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` Returns: Tensor: The output sign tensor with identical shape and data type to the input :attr:`x`. Examples: .. code-block:: python import paddle x = paddle.to_tensor([3.0, 0.0, -2.0, 1.7], dtype='float32') out = paddle.sign(x=x) print(out) # [1.0, 0.0, -1.0, 1.0] """ if in_dygraph_mode(): return core.ops.sign(x) check_variable_and_dtype(x, 'x', ['float16', 'float32', 'float64'], 'sign') helper = LayerHelper("sign", **locals()) out = helper.create_variable_for_type_inference(dtype=x.dtype) helper.append_op(type='sign', inputs={'X': [x]}, outputs={'Out': [out]}) return out def tanh(x, name=None): r""" Tanh Activation Operator. .. math:: out = \\frac{e^{x} - e^{-x}}{e^{x} + e^{-x}} Args: x (Tensor): Input of Tanh operator, an N-D Tensor, with data type float32, float64 or float16. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: Output of Tanh operator, a Tensor with same data type and shape as input. Examples: .. code-block:: python import paddle x = paddle.to_tensor([-0.4, -0.2, 0.1, 0.3]) out = paddle.tanh(x) print(out) # [-0.37994896 -0.19737532 0.09966799 0.29131261] """ if in_dygraph_mode(): return core.ops.tanh(x) check_variable_and_dtype(x, 'x', ['float16', 'float32', 'float64'], 'tanh') check_type(x, 'x', (Variable), 'tanh') helper = LayerHelper('tanh', **locals()) out = helper.create_variable_for_type_inference(x.dtype) helper.append_op(type='tanh', inputs={'X': x}, outputs={'Out': out}) return out def increment(x, value=1.0, name=None): """ The OP is usually used for control flow to increment the data of :attr:`x` by an amount :attr:`value`. Notice that the number of elements in :attr:`x` must be equal to 1. Args: x (Tensor): A tensor that must always contain only one element, its data type supports float32, float64, int32 and int64. value(float, optional): The amount to increment the data of :attr:`x`. Default: 1.0. name (str, optional): Name for the operation (optional, default is None). For more information, please refer to :ref:`api_guide_Name`. Returns: Tensor, the elementwise-incremented tensor with the same shape and data type as :attr:`x`. Examples: .. code-block:: python import paddle data = paddle.zeros(shape=[1], dtype='float32') counter = paddle.increment(data) # [1.] """ if in_dygraph_mode(): return core.ops.increment(x, 'step', value) check_variable_and_dtype(x, 'x', ['float32', 'float64', 'int32', 'int64'], 'increment') helper = LayerHelper("increment", **locals()) helper.append_op( type='increment', inputs={'X': [x]}, outputs={'Out': [x]}, attrs={'step': float(value)}) return x def all(x, axis=None, keepdim=False, name=None): """ Computes the the ``logical and`` of tensor elements over the given dimension. Args: x (Tensor): An N-D Tensor, the input data type should be `bool`. axis (int|list|tuple, optional): The dimensions along which the ``logical and`` is compute. If :attr:`None`, and all elements of :attr:`x` and return a Tensor with a single element, otherwise must be in the range :math:`[-rank(x), rank(x))`. If :math:`axis[i] < 0`, the dimension to reduce is :math:`rank + axis[i]`. keepdim (bool, optional): Whether to reserve the reduced dimension in the output Tensor. The result Tensor will have one fewer dimension than the :attr:`x` unless :attr:`keepdim` is true, default value is False. name (str, 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` Returns: Tensor: Results the ``logical and`` on the specified axis of input Tensor `x`, it's data type is bool. Raises: ValueError: If the data type of `x` is not bool. TypeError: The type of :attr:`axis` must be int, list or tuple. Examples: .. code-block:: python import paddle import numpy as np # x is a bool Tensor with following elements: # [[True, False] # [True, True]] x = paddle.assign(np.array([[1, 0], [1, 1]], dtype='int32')) print(x) x = paddle.cast(x, 'bool') # out1 should be [False] out1 = paddle.all(x) # [False] print(out1) # out2 should be [True, False] out2 = paddle.all(x, axis=0) # [True, False] print(out2) # keep_dim=False, out3 should be [False, True], out.shape should be (2,) out3 = paddle.all(x, axis=-1) # [False, True] print(out3) # keep_dim=True, out4 should be [[False], [True]], out.shape should be (2,1) out4 = paddle.all(x, axis=1, keepdim=True) out4 = paddle.cast(out4, 'int32') # [[False], [True]] print(out4) """ if axis is not None and not isinstance(axis, (list, tuple)): axis = [axis] if not axis: reduce_all_flag = True else: if len(axis) == len(x.shape): reduce_all_flag = True else: reduce_all_flag = False attrs = { 'dim': axis if axis != None and axis != [] and axis != () else [0], 'keep_dim': keepdim, 'reduce_all': reduce_all_flag } dtype_flag = False if in_dygraph_mode(): axis = axis if axis != None and axis != [] else [0] return core.ops.reduce_all(x, 'dim', axis, 'keep_dim', keepdim, 'reduce_all', reduce_all_flag) check_variable_and_dtype(x, 'x', ['bool'], 'all') check_type(axis, 'axis', (int, list, tuple, type(None)), 'all') helper = LayerHelper('all', **locals()) out = helper.create_variable_for_type_inference(dtype=x.dtype) helper.append_op( type='reduce_all', inputs={'X': x}, outputs={'Out': out}, attrs=attrs) return out def any(x, axis=None, keepdim=False, name=None): """ Computes the the ``logical or`` of tensor elements over the given dimension. Args: x (Tensor): An N-D Tensor, the input data type should be `bool`. axis (int|list|tuple, optional): The dimensions along which the ``logical or`` is compute. If :attr:`None`, and all elements of :attr:`x` and return a Tensor with a single element, otherwise must be in the range :math:`[-rank(x), rank(x))`. If :math:`axis[i] < 0`, the dimension to reduce is :math:`rank + axis[i]`. keepdim (bool, optional): Whether to reserve the reduced dimension in the output Tensor. The result Tensor will have one fewer dimension than the :attr:`x` unless :attr:`keepdim` is true, default value is False. name (str, 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` Returns: Tensor: Results the ``logical or`` on the specified axis of input Tensor `x`, it's data type is bool. Raises: ValueError: If the data type of `x` is not bool. TypeError: The type of :attr:`axis` must be int, list or tuple. Examples: .. code-block:: python import paddle import numpy as np # x is a bool Tensor with following elements: # [[True, False] # [False, False]] x = paddle.assign(np.array([[1, 0], [1, 1]], dtype='int32')) print(x) x = paddle.cast(x, 'bool') # out1 should be [True] out1 = paddle.any(x) # [True] print(out1) # out2 should be [True, False] out2 = paddle.any(x, axis=0) # [True, False] print(out2) # keep_dim=False, out3 should be [True, False], out.shape should be (2,) out3 = paddle.any(x, axis=-1) # [True, False] print(out3) # keep_dim=True, result should be [[True], [False]], out.shape should be (2,1) out4 = paddle.any(x, axis=1, keepdim=True) out4 = paddle.cast(out4, 'int32') # [[True], [False]] print(out4) """ if axis is not None and not isinstance(axis, (list, tuple)): axis = [axis] if not axis: reduce_all_flag = True else: if len(axis) == len(x.shape): reduce_all_flag = True else: reduce_all_flag = False attrs = { 'dim': axis if axis != None and axis != [] and axis != () else [0], 'keep_dim': keepdim, 'reduce_all': reduce_all_flag } dtype_flag = False if in_dygraph_mode(): axis = axis if axis != None and axis != [] else [0] return core.ops.reduce_any(x, 'dim', axis, 'keep_dim', keepdim, 'reduce_all', reduce_all_flag) check_variable_and_dtype(x, 'x', ['bool'], 'any') check_type(axis, 'axis', (int, list, tuple, type(None)), 'any') helper = LayerHelper('any', **locals()) out = helper.create_variable_for_type_inference(dtype=x.dtype) helper.append_op( type='reduce_any', inputs={'X': x}, outputs={'Out': out}, attrs=attrs) return out def broadcast_shape(x_shape, y_shape): """ The function returns the shape of doing operation with broadcasting on tensors of x_shape and y_shape, please refer to :ref:`user_guide_broadcasting` for more details. Args: x_shape (list[int]|tuple[int]): A shape of tensor. y_shape (list[int]|tuple[int]): A shape of tensor. Returns: list[int], the result shape. Examples: .. code-block:: python import paddle shape = paddle.broadcast_shape([2, 1, 3], [1, 3, 1]) # [2, 3, 3] # shape = paddle.broadcast_shape([2, 1, 3], [3, 3, 1]) # ValueError (terminated with error message). """ return core.broadcast_shape(x_shape, y_shape) def conj(x, name=None): r""" This function computes the conjugate of the Tensor elementwisely. Args: x (Tensor): The input tensor which hold the complex numbers. Optional data types are: complex64, complex128, float32, float64, int32 or int64. name (str, 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` Returns: out (Tensor): The conjugate of input. The shape and data type is the same with input. If the elements of tensor is real type such as float32, float64, int32 or int64, the out is the same with input. Examples: .. code-block:: python import paddle data=paddle.to_tensor([[1+1j, 2+2j, 3+3j], [4+4j, 5+5j, 6+6j]]) #Tensor(shape=[2, 3], dtype=complex64, place=CUDAPlace(0), stop_gradient=True, # [[(1+1j), (2+2j), (3+3j)], # [(4+4j), (5+5j), (6+6j)]]) conj_data=paddle.conj(data) #Tensor(shape=[2, 3], dtype=complex64, place=CUDAPlace(0), stop_gradient=True, # [[(1-1j), (2-2j), (3-3j)], # [(4-4j), (5-5j), (6-6j)]]) """ if in_dygraph_mode(): return core.ops.conj(x) check_variable_and_dtype(x, "x", ['complex64', 'complex128', 'float32', 'float64', 'int32', 'int64'], 'conj') helper = LayerHelper('conj', **locals()) out = helper.create_variable_for_type_inference( dtype=helper.input_dtype()) helper.append_op(type='conj', inputs={'X': x}, outputs={'Out': [out]}) return out