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+/*
+ * 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 Diff.h
+ * @ingroup COM_AI_RUNTIME
+ * @brief This file contains nnfw::misc::tensor::Diff struct
+ */
+
+#ifndef __NNFW_MISC_TENSOR_DIFF_H__
+#define __NNFW_MISC_TENSOR_DIFF_H__
+
+#include "misc/tensor/Index.h"
+
+namespace nnfw
+{
+namespace misc
+{
+namespace tensor
+{
+
+/**
+ * @brief Struct to have information after comparing two elements of two tensors
+ */
+template <typename T> struct Diff
+{
+ Index index; /**< Index of elements in two tensors, which turn out to be different */
+
+ T expected; /**< Expected value of element of first tensor */
+ T obtained; /**< Obtained value of element of second tensor */
+
+ /**
+ * @brief Construct a new @c Diff object
+ * @param[in] i Initial value of index
+ */
+ Diff(const Index &i) : index(i)
+ {
+ // DO NOTHING
+ }
+
+ /**
+ * @brief Construct a new @c Diff object
+ * @param[in] i Index value
+ * @param[in] e Expected value of element of first tensor
+ * @param[in] o Obtained value of element of second tensor
+ */
+ Diff(const Index &i, const T &e, const T &o) : index(i), expected{e}, obtained{o}
+ {
+ // DO NOTHING
+ }
+};
+
+} // namespace tensor
+} // namespace misc
+} // namespace nnfw
+
+#endif // __NNFW_MISC_TENSOR_DIFF_H__