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Diffstat (limited to 'runtimes/libs/misc/include/misc/tensor/Zipper.h')
-rw-r--r-- | runtimes/libs/misc/include/misc/tensor/Zipper.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/runtimes/libs/misc/include/misc/tensor/Zipper.h b/runtimes/libs/misc/include/misc/tensor/Zipper.h new file mode 100644 index 000000000..8f0ec4ab6 --- /dev/null +++ b/runtimes/libs/misc/include/misc/tensor/Zipper.h @@ -0,0 +1,104 @@ +/* + * Copyright (c) 2018 Samsung Electronics Co., Ltd. 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. + */ + +/** + * @file Zipper.h + * @ingroup COM_AI_RUNTIME + * @brief This file contains nnfw::misc::tensor::Zipper class + */ + +#ifndef __NNFW_MISC_TENSOR_ZIPPER_H__ +#define __NNFW_MISC_TENSOR_ZIPPER_H__ + +#include "misc/tensor/Index.h" +#include "misc/tensor/IndexIterator.h" +#include "misc/tensor/Reader.h" + +namespace nnfw +{ +namespace misc +{ +namespace tensor +{ + +/** + * @brief Class to apply a function with three params: @c Index, elements of a tensor + * at passed index read by @c Reader objects + */ +template <typename T> class Zipper +{ +public: + /** + * @brief Construct a new @c Zipper object + * @param[in] shape Shape of @c lhs and @c rhs + * @param[in] lhs @c Reader object of a tensor + * @param[in] rhs @c Reader object of a tensor + */ + Zipper(const Shape &shape, const Reader<T> &lhs, const Reader<T> &rhs) + : _shape{shape}, _lhs{lhs}, _rhs{rhs} + { + // DO NOTHING + } + +public: + /** + * @brief Apply @c cb to all elements of tensors. Elements of two tensors + * at passed @c index are read by @c lhs and @c rhs + * @param[in] cb Function to apply + * @return N/A + */ + template <typename Callable> void zip(Callable cb) const + { + iterate(_shape) << + [this, &cb](const Index &index) { cb(index, _lhs.at(index), _rhs.at(index)); }; + } + +private: + const Shape &_shape; + const Reader<T> &_lhs; + const Reader<T> &_rhs; +}; + +/** + * @brief Apply @c cb by using @c lhs and @c rhs passed to the constructor of @c zipper + * @param[in] zipper @c Zipper object + * @param[in] cb Function to zpply using @c zip function + * @return @c zipper object after applying @c cb to @c zipper + */ +template <typename T, typename Callable> +const Zipper<T> &operator<<(const Zipper<T> &zipper, Callable cb) +{ + zipper.zip(cb); + return zipper; +} + +/** + * @brief Get @c Zipper object constructed using passed params + * @param shape Shape of @c lhs and @c rhs + * @param lhs @c Reader object of a tensor + * @param rhs @c Reader object of a tensor + * @return @c Zipper object + */ +template <typename T> Zipper<T> zip(const Shape &shape, const Reader<T> &lhs, const Reader<T> &rhs) +{ + return Zipper<T>{shape, lhs, rhs}; +} + +} // namespace tensor +} // namespace misc +} // namespace nnfw + +#endif // __NNFW_MISC_TENSOR_ZIPPER_H__ |