2 * Copyright (c) 2020 Samsung Electronics Co., Ltd. All Rights Reserved
3 * Copyright 2017 The TensorFlow Authors. All Rights Reserved.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #ifndef __NNFW_CKER_SPLIT_V_H__
19 #define __NNFW_CKER_SPLIT_V_H__
21 #include "cker/Shape.h"
22 #include "cker/Types.h"
29 template <typename Scalar>
30 void SplitV(const SplitVParams ¶ms, const Shape &input_shape, const Scalar *input_data,
31 std::vector<nnfw::cker::Shape> &output_shapes, Scalar *const *output_data)
33 const int split_dimensions = input_shape.DimensionsCount();
34 int axis = params.axis < 0 ? params.axis + split_dimensions : params.axis;
35 int outputs_count = params.num_split;
37 int64_t split_size = 0;
39 for (int i = 0; i < outputs_count; i++)
41 // TFLITE_DCHECK_EQ(output_shapes[i]->DimensionsCount(), split_dimensions);
42 for (int j = 0; j < split_dimensions; j++)
46 MatchingDim(output_shapes[i], j, input_shape, j);
49 split_size += output_shapes[i].Dims(axis);
52 int64_t outer_size = 1;
53 for (int i = 0; i < axis; ++i)
55 outer_size *= input_shape.Dims(i);
57 // For all output arrays,
58 // FlatSize() = outer_size * Dims(axis) * base_inner_size;
59 int64_t base_inner_size = 1;
60 for (int i = axis + 1; i < split_dimensions; ++i)
62 base_inner_size *= input_shape.Dims(i);
65 const Scalar *input_ptr = input_data;
67 for (int k = 0; k < outer_size; k++)
69 for (int i = 0; i < outputs_count; ++i)
71 copy_size = output_shapes[i].Dims(axis) * base_inner_size;
72 memcpy(output_data[i] + k * copy_size, input_ptr, copy_size * sizeof(Scalar));
73 input_ptr += copy_size;
81 #endif // __NNFW_CKER_SPLIT_V_H__