1 // Tencent is pleased to support the open source community by making ncnn available. 2 // 3 // Copyright (C) 2020 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 #ifndef SSE_USABILITY_H 16 #define SSE_USABILITY_H 17 18 #include <emmintrin.h> 19 _mm_reduce_add_ps(__m128 x128)20static inline float _mm_reduce_add_ps(__m128 x128) 21 { 22 const __m128 x64 = _mm_add_ps(x128, _mm_movehl_ps(x128, x128)); 23 const __m128 x32 = _mm_add_ss(x64, _mm_shuffle_ps(x64, x64, 0x55)); 24 return _mm_cvtss_f32(x32); 25 } 26 27 #endif // SSE_USABILITY_H 28