1
// Tencent is pleased to support the open source community by making ncnn available.
3
// Copyright (C) 2021 THL A29 Limited, a Tencent company. All rights reserved.
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
8
// https://opensource.org/licenses/BSD-3-Clause
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.
15
#include "swish_mips.h"
19
#include "msa_mathfun.h"
24
Swish_mips::Swish_mips()
27
support_packing = true;
31
int Swish_mips::forward_inplace(Mat& bottom_top_blob, const Option& opt) const
33
int w = bottom_top_blob.w;
34
int h = bottom_top_blob.h;
35
int d = bottom_top_blob.d;
36
int channels = bottom_top_blob.c;
37
int elempack = bottom_top_blob.elempack;
38
int size = w * h * d * elempack;
40
#pragma omp parallel for num_threads(opt.num_threads)
41
for (int q = 0; q < channels; q++)
43
float* ptr = bottom_top_blob.channel(q);
47
v4f32 _one = (v4f32)__msa_fill_w_f32(1.f);
48
for (; i + 3 < size; i += 4)
50
__builtin_prefetch(ptr + 16);
51
v4f32 _p = (v4f32)__msa_ld_w(ptr, 0);
52
_p = __msa_fdiv_w(_p, __msa_fadd_w(_one, exp_ps((v4f32)__msa_bnegi_w((v4u32)_p, 31))));
53
__msa_st_w((v4i32)_p, ptr, 0);
60
*ptr = *ptr / (1.f + exp(-*ptr));