volk_32f_binary_slicer_32i.h

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/* -*- c++ -*- */
/*
 * Copyright 2014 Free Software Foundation, Inc.
 *
 * This file is part of VOLK
 *
 * SPDX-License-Identifier: LGPL-3.0-or-later
 */
 
#ifndef INCLUDED_volk_32f_binary_slicer_32i_H
#define INCLUDED_volk_32f_binary_slicer_32i_H
 
 
#ifdef LV_HAVE_GENERIC
 
static inline void volk_32f_binary_slicer_32i_generic(int* cVector,
                                                      const float* aVector,
                                                      unsigned int num_points)
{
    int* cPtr = cVector;
    const float* aPtr = aVector;
    unsigned int number = 0;
 
    for (number = 0; number < num_points; number++) {
        if (*aPtr++ >= 0) {
            *cPtr++ = 1;
        } else {
            *cPtr++ = 0;
        }
    }
}
#endif /* LV_HAVE_GENERIC */
 
 
#ifdef LV_HAVE_GENERIC
 
static inline void volk_32f_binary_slicer_32i_generic_branchless(int* cVector,
                                                                 const float* aVector,
                                                                 unsigned int num_points)
{
    int* cPtr = cVector;
    const float* aPtr = aVector;
    unsigned int number = 0;
 
    for (number = 0; number < num_points; number++) {
        *cPtr++ = (*aPtr++ >= 0);
    }
}
#endif /* LV_HAVE_GENERIC */
 
 
#ifdef LV_HAVE_SSE2
#include <emmintrin.h>
 
static inline void volk_32f_binary_slicer_32i_a_sse2(int* cVector,
                                                     const float* aVector,
                                                     unsigned int num_points)
{
    int* cPtr = cVector;
    const float* aPtr = aVector;
    unsigned int number = 0;
 
    unsigned int quarter_points = num_points / 4;
    __m128 a_val, res_f;
    __m128i res_i, binary_i;
    __m128 zero_val;
    zero_val = _mm_set1_ps(0.0f);
 
    for (number = 0; number < quarter_points; number++) {
        a_val = _mm_load_ps(aPtr);
 
        res_f = _mm_cmpge_ps(a_val, zero_val);
        res_i = _mm_cvtps_epi32(res_f);
        binary_i = _mm_srli_epi32(res_i, 31);
 
        _mm_store_si128((__m128i*)cPtr, binary_i);
 
        cPtr += 4;
        aPtr += 4;
    }
 
    for (number = quarter_points * 4; number < num_points; number++) {
        if (*aPtr++ >= 0) {
            *cPtr++ = 1;
        } else {
            *cPtr++ = 0;
        }
    }
}
#endif /* LV_HAVE_SSE2 */
 
 
#ifdef LV_HAVE_AVX
#include <immintrin.h>
 
static inline void volk_32f_binary_slicer_32i_a_avx(int* cVector,
                                                    const float* aVector,
                                                    unsigned int num_points)
{
    int* cPtr = cVector;
    const float* aPtr = aVector;
    unsigned int number = 0;
 
    unsigned int quarter_points = num_points / 8;
    __m256 a_val, res_f, binary_f;
    __m256i binary_i;
    __m256 zero_val, one_val;
    zero_val = _mm256_set1_ps(0.0f);
    one_val = _mm256_set1_ps(1.0f);
 
    for (number = 0; number < quarter_points; number++) {
        a_val = _mm256_load_ps(aPtr);
 
        res_f = _mm256_cmp_ps(a_val, zero_val, _CMP_GE_OS);
        binary_f = _mm256_and_ps(res_f, one_val);
        binary_i = _mm256_cvtps_epi32(binary_f);
 
        _mm256_store_si256((__m256i*)cPtr, binary_i);
 
        cPtr += 8;
        aPtr += 8;
    }
 
    for (number = quarter_points * 8; number < num_points; number++) {
        if (*aPtr++ >= 0) {
            *cPtr++ = 1;
        } else {
            *cPtr++ = 0;
        }
    }
}
#endif /* LV_HAVE_AVX */
 
 
#ifdef LV_HAVE_SSE2
#include <emmintrin.h>
 
static inline void volk_32f_binary_slicer_32i_u_sse2(int* cVector,
                                                     const float* aVector,
                                                     unsigned int num_points)
{
    int* cPtr = cVector;
    const float* aPtr = aVector;
    unsigned int number = 0;
 
    unsigned int quarter_points = num_points / 4;
    __m128 a_val, res_f;
    __m128i res_i, binary_i;
    __m128 zero_val;
    zero_val = _mm_set1_ps(0.0f);
 
    for (number = 0; number < quarter_points; number++) {
        a_val = _mm_loadu_ps(aPtr);
 
        res_f = _mm_cmpge_ps(a_val, zero_val);
        res_i = _mm_cvtps_epi32(res_f);
        binary_i = _mm_srli_epi32(res_i, 31);
 
        _mm_storeu_si128((__m128i*)cPtr, binary_i);
 
        cPtr += 4;
        aPtr += 4;
    }
 
    for (number = quarter_points * 4; number < num_points; number++) {
        if (*aPtr++ >= 0) {
            *cPtr++ = 1;
        } else {
            *cPtr++ = 0;
        }
    }
}
#endif /* LV_HAVE_SSE2 */
 
 
#ifdef LV_HAVE_AVX
#include <immintrin.h>
 
static inline void volk_32f_binary_slicer_32i_u_avx(int* cVector,
                                                    const float* aVector,
                                                    unsigned int num_points)
{
    int* cPtr = cVector;
    const float* aPtr = aVector;
    unsigned int number = 0;
 
    unsigned int quarter_points = num_points / 8;
    __m256 a_val, res_f, binary_f;
    __m256i binary_i;
    __m256 zero_val, one_val;
    zero_val = _mm256_set1_ps(0.0f);
    one_val = _mm256_set1_ps(1.0f);
 
    for (number = 0; number < quarter_points; number++) {
        a_val = _mm256_loadu_ps(aPtr);
 
        res_f = _mm256_cmp_ps(a_val, zero_val, _CMP_GE_OS);
        binary_f = _mm256_and_ps(res_f, one_val);
        binary_i = _mm256_cvtps_epi32(binary_f);
 
        _mm256_storeu_si256((__m256i*)cPtr, binary_i);
 
        cPtr += 8;
        aPtr += 8;
    }
 
    for (number = quarter_points * 8; number < num_points; number++) {
        if (*aPtr++ >= 0) {
            *cPtr++ = 1;
        } else {
            *cPtr++ = 0;
        }
    }
}
#endif /* LV_HAVE_AVX */
 
 
#endif /* INCLUDED_volk_32f_binary_slicer_32i_H */