volk_32f_accumulator_s32f.h

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/* -*- c++ -*- */
/*
 * Copyright 2012, 2014 Free Software Foundation, Inc.
 *
 * This file is part of VOLK
 *
 * SPDX-License-Identifier: LGPL-3.0-or-later
 */
 
#ifndef INCLUDED_volk_32f_accumulator_s32f_a_H
#define INCLUDED_volk_32f_accumulator_s32f_a_H
 
#include <inttypes.h>
#include <volk/volk_common.h>
 
#ifdef LV_HAVE_AVX
#include <immintrin.h>
 
static inline void volk_32f_accumulator_s32f_a_avx(float* result,
                                                   const float* inputBuffer,
                                                   unsigned int num_points)
{
    float returnValue = 0;
    unsigned int number = 0;
    const unsigned int eighthPoints = num_points / 8;
 
    const float* aPtr = inputBuffer;
    __VOLK_ATTR_ALIGNED(32) float tempBuffer[8];
 
    __m256 accumulator = _mm256_setzero_ps();
    __m256 aVal = _mm256_setzero_ps();
 
    for (; number < eighthPoints; number++) {
        aVal = _mm256_load_ps(aPtr);
        accumulator = _mm256_add_ps(accumulator, aVal);
        aPtr += 8;
    }
 
    _mm256_store_ps(tempBuffer, accumulator);
 
    returnValue = tempBuffer[0];
    returnValue += tempBuffer[1];
    returnValue += tempBuffer[2];
    returnValue += tempBuffer[3];
    returnValue += tempBuffer[4];
    returnValue += tempBuffer[5];
    returnValue += tempBuffer[6];
    returnValue += tempBuffer[7];
 
    number = eighthPoints * 8;
    for (; number < num_points; number++) {
        returnValue += (*aPtr++);
    }
    *result = returnValue;
}
#endif /* LV_HAVE_AVX */
 
 
#ifdef LV_HAVE_AVX
#include <immintrin.h>
 
static inline void volk_32f_accumulator_s32f_u_avx(float* result,
                                                   const float* inputBuffer,
                                                   unsigned int num_points)
{
    float returnValue = 0;
    unsigned int number = 0;
    const unsigned int eighthPoints = num_points / 8;
 
    const float* aPtr = inputBuffer;
    __VOLK_ATTR_ALIGNED(32) float tempBuffer[8];
 
    __m256 accumulator = _mm256_setzero_ps();
    __m256 aVal = _mm256_setzero_ps();
 
    for (; number < eighthPoints; number++) {
        aVal = _mm256_loadu_ps(aPtr);
        accumulator = _mm256_add_ps(accumulator, aVal);
        aPtr += 8;
    }
 
    _mm256_store_ps(tempBuffer, accumulator);
 
    returnValue = tempBuffer[0];
    returnValue += tempBuffer[1];
    returnValue += tempBuffer[2];
    returnValue += tempBuffer[3];
    returnValue += tempBuffer[4];
    returnValue += tempBuffer[5];
    returnValue += tempBuffer[6];
    returnValue += tempBuffer[7];
 
    number = eighthPoints * 8;
    for (; number < num_points; number++) {
        returnValue += (*aPtr++);
    }
    *result = returnValue;
}
#endif /* LV_HAVE_AVX */
 
 
#ifdef LV_HAVE_SSE
#include <xmmintrin.h>
 
static inline void volk_32f_accumulator_s32f_a_sse(float* result,
                                                   const float* inputBuffer,
                                                   unsigned int num_points)
{
    float returnValue = 0;
    unsigned int number = 0;
    const unsigned int quarterPoints = num_points / 4;
 
    const float* aPtr = inputBuffer;
    __VOLK_ATTR_ALIGNED(16) float tempBuffer[4];
 
    __m128 accumulator = _mm_setzero_ps();
    __m128 aVal = _mm_setzero_ps();
 
    for (; number < quarterPoints; number++) {
        aVal = _mm_load_ps(aPtr);
        accumulator = _mm_add_ps(accumulator, aVal);
        aPtr += 4;
    }
 
    _mm_store_ps(tempBuffer, accumulator);
 
    returnValue = tempBuffer[0];
    returnValue += tempBuffer[1];
    returnValue += tempBuffer[2];
    returnValue += tempBuffer[3];
 
    number = quarterPoints * 4;
    for (; number < num_points; number++) {
        returnValue += (*aPtr++);
    }
    *result = returnValue;
}
#endif /* LV_HAVE_SSE */
 
 
#ifdef LV_HAVE_SSE
#include <xmmintrin.h>
 
static inline void volk_32f_accumulator_s32f_u_sse(float* result,
                                                   const float* inputBuffer,
                                                   unsigned int num_points)
{
    float returnValue = 0;
    unsigned int number = 0;
    const unsigned int quarterPoints = num_points / 4;
 
    const float* aPtr = inputBuffer;
    __VOLK_ATTR_ALIGNED(16) float tempBuffer[4];
 
    __m128 accumulator = _mm_setzero_ps();
    __m128 aVal = _mm_setzero_ps();
 
    for (; number < quarterPoints; number++) {
        aVal = _mm_load_ps(aPtr);
        accumulator = _mm_add_ps(accumulator, aVal);
        aPtr += 4;
    }
 
    _mm_store_ps(tempBuffer, accumulator);
 
    returnValue = tempBuffer[0];
    returnValue += tempBuffer[1];
    returnValue += tempBuffer[2];
    returnValue += tempBuffer[3];
 
    number = quarterPoints * 4;
    for (; number < num_points; number++) {
        returnValue += (*aPtr++);
    }
    *result = returnValue;
}
#endif /* LV_HAVE_SSE */
 
#ifdef LV_HAVE_GENERIC
static inline void volk_32f_accumulator_s32f_generic(float* result,
                                                     const float* inputBuffer,
                                                     unsigned int num_points)
{
    const float* aPtr = inputBuffer;
    unsigned int number = 0;
    float returnValue = 0;
 
    for (; number < num_points; number++) {
        returnValue += (*aPtr++);
    }
    *result = returnValue;
}
#endif /* LV_HAVE_GENERIC */
 
#endif /* INCLUDED_volk_32f_accumulator_s32f_a_H */