/* Copyright 2017 The TensorFlow 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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==============================================================================*/
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#ifndef TENSORFLOW_CORE_UTIL_BATCH_UTIL_H_
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#define TENSORFLOW_CORE_UTIL_BATCH_UTIL_H_
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#include "tensorflow/core/framework/tensor.h"
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#include "tensorflow/core/lib/core/status.h"
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namespace tensorflow {
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namespace batch_util {
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// Copies element into the index^th slice of parent (in the 0th dimension).
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//
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// NOTE(mrry): The `element` argument is taken by value. Use `std::move()`
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// to move the `element` argument into this function, and the implementation
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// may be able to optimize the copy to a move. This is particularly important
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// for DT_STRING tensors.
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Status CopyElementToSlice(Tensor element, Tensor* parent, int64 index);
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// Copies the index^th slice of parent (in the 0th dimension) into element.
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Status CopySliceToElement(const Tensor& parent, Tensor* element, int64 index);
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// Copies the index^th slice of parent (in the 0th dimension) into element.
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//
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// NOTE(mrry): The implementation may be able to optimize the copy to a move.
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// This is particularly important for DT_STRING tensors.
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Status MaybeMoveSliceToElement(Tensor* parent, Tensor* element, int64 index);
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// Zero-initializes the tensor `element` using the scalar stored in `padding`.
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// Both `element` and `padding` must have matching `dtype`.
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Status SetElementZero(Tensor* element, const Tensor& padding);
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// Copies `element` into a (0th dimension) slice of `parent`, assuming
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// the shape of `element` is strictly not larger along any axis than a
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// slice.
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Status CopyElementToLargerSlice(const Tensor& element, Tensor* parent,
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int index);
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} // namespace batch_util
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} // namespace tensorflow
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#endif // TENSORFLOW_CORE_UTIL_BATCH_UTIL_H_
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