wehub-resource-sync
59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. */
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#pragma once
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#include "paddle/phi/backends/all_context.h"
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#include "paddle/phi/core/dense_tensor.h"
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#include "paddle/phi/core/lod_utils.h"
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namespace phi {
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namespace funcs {
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/*
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* \brief Scale a sequence.
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*
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* All sequences will be padded to the same length and stored in a transposed
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* shape.
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* Example:
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* Given:
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* seq = (s0, s0, s0, s0; s1, s1; s2, s2, s2; s3)
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* scales = (2, 3, 4, 5)
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* then:
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* result = (2*s0, 2*s0, 2*s0, 2*s0; 3*s1, 3*s1; 4*s2, 4*s2, 4*s2; 5*s3)
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*
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* \param dev_ctx Device context of this functor.
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* \param seq DenseTensor which is stored in sequence format, the
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shape
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* is [total_sequence_length, sequence_width] where
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* total_sequence_length is the sum of all sequences'
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* length.
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* \param scales Array<T>. The i-th sequence will be scaled by scales[i].
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* \param num_seq Number of sequence
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*
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*/
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template <typename DeviceContext, typename T>
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class ScaleDenseTensorFunctor {
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public:
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void operator()(const DeviceContext& dev_ctx,
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const T* scales,
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DenseTensor* seq);
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};
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} // namespace funcs
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} // namespace phi
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