ncnn
1// Tencent is pleased to support the open source community by making ncnn available.
2//
3// Copyright (C) 2017 THL A29 Limited, a Tencent company. All rights reserved.
4//
5// Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
6// in compliance with the License. You may obtain a copy of the License at
7//
8// https://opensource.org/licenses/BSD-3-Clause
9//
10// Unless required by applicable law or agreed to in writing, software distributed
11// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
12// CONDITIONS OF ANY KIND, either express or implied. See the License for the
13// specific language governing permissions and limitations under the License.
14
15#include "power.h"
16
17namespace ncnn {
18
19Power::Power()
20{
21one_blob_only = true;
22support_inplace = true;
23}
24
25int Power::load_param(const ParamDict& pd)
26{
27power = pd.get(0, 1.f);
28scale = pd.get(1, 1.f);
29shift = pd.get(2, 0.f);
30
31return 0;
32}
33
34int Power::forward_inplace(Mat& bottom_top_blob, const Option& opt) const
35{
36int w = bottom_top_blob.w;
37int h = bottom_top_blob.h;
38int channels = bottom_top_blob.c;
39int size = w * h;
40
41#pragma omp parallel for num_threads(opt.num_threads)
42for (int q = 0; q < channels; q++)
43{
44float* ptr = bottom_top_blob.channel(q);
45
46for (int i = 0; i < size; i++)
47{
48ptr[i] = powf((shift + ptr[i] * scale), power);
49}
50}
51
52return 0;
53}
54
55} // namespace ncnn
56