1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "media/base/vector_math_testing.h" 6 7 #include <xmmintrin.h> // NOLINT 8 9 namespace media { 10 namespace vector_math { 11 12 void FMUL_SSE(const float src[], float scale, int len, float dest[]) { 13 const int rem = len % 4; 14 const int last_index = len - rem; 15 __m128 m_scale = _mm_set_ps1(scale); 16 for (int i = 0; i < last_index; i += 4) 17 _mm_store_ps(dest + i, _mm_mul_ps(_mm_load_ps(src + i), m_scale)); 18 19 // Handle any remaining values that wouldn't fit in an SSE pass. 20 for (int i = last_index; i < len; ++i) 21 dest[i] = src[i] * scale; 22 } 23 24 void FMAC_SSE(const float src[], float scale, int len, float dest[]) { 25 const int rem = len % 4; 26 const int last_index = len - rem; 27 __m128 m_scale = _mm_set_ps1(scale); 28 for (int i = 0; i < last_index; i += 4) { 29 _mm_store_ps(dest + i, _mm_add_ps(_mm_load_ps(dest + i), 30 _mm_mul_ps(_mm_load_ps(src + i), m_scale))); 31 } 32 33 // Handle any remaining values that wouldn't fit in an SSE pass. 34 for (int i = last_index; i < len; ++i) 35 dest[i] += src[i] * scale; 36 } 37 38 } // namespace vector_math 39 } // namespace media 40
