volk_32fc_conjugate_32fc.h

Go to the documentation of this file.

/* -*- 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_32fc_conjugate_32fc_u_H
#define INCLUDED_volk_32fc_conjugate_32fc_u_H
 
#include <float.h>
#include <inttypes.h>
#include <stdio.h>
#include <volk/volk_complex.h>
 
#ifdef LV_HAVE_AVX
#include <immintrin.h>
 
static inline void volk_32fc_conjugate_32fc_u_avx(lv_32fc_t* cVector,
                                                  const lv_32fc_t* aVector,
                                                  unsigned int num_points)
{
    unsigned int number = 0;
    const unsigned int quarterPoints = num_points / 4;
 
    __m256 x;
    lv_32fc_t* c = cVector;
    const lv_32fc_t* a = aVector;
 
    __m256 conjugator = _mm256_setr_ps(0, -0.f, 0, -0.f, 0, -0.f, 0, -0.f);
 
    for (; number < quarterPoints; number++) {
 
        x = _mm256_loadu_ps((float*)a); // Load the complex data as ar,ai,br,bi
 
        x = _mm256_xor_ps(x, conjugator); // conjugate register
 
        _mm256_storeu_ps((float*)c, x); // Store the results back into the C container
 
        a += 4;
        c += 4;
    }
 
    number = quarterPoints * 4;
 
    for (; number < num_points; number++) {
        *c++ = lv_conj(*a++);
    }
}
#endif /* LV_HAVE_AVX */
 
#ifdef LV_HAVE_SSE3
#include <pmmintrin.h>
 
static inline void volk_32fc_conjugate_32fc_u_sse3(lv_32fc_t* cVector,
                                                   const lv_32fc_t* aVector,
                                                   unsigned int num_points)
{
    unsigned int number = 0;
    const unsigned int halfPoints = num_points / 2;
 
    __m128 x;
    lv_32fc_t* c = cVector;
    const lv_32fc_t* a = aVector;
 
    __m128 conjugator = _mm_setr_ps(0, -0.f, 0, -0.f);
 
    for (; number < halfPoints; number++) {
 
        x = _mm_loadu_ps((float*)a); // Load the complex data as ar,ai,br,bi
 
        x = _mm_xor_ps(x, conjugator); // conjugate register
 
        _mm_storeu_ps((float*)c, x); // Store the results back into the C container
 
        a += 2;
        c += 2;
    }
 
    if ((num_points % 2) != 0) {
        *c = lv_conj(*a);
    }
}
#endif /* LV_HAVE_SSE3 */
 
#ifdef LV_HAVE_GENERIC
 
static inline void volk_32fc_conjugate_32fc_generic(lv_32fc_t* cVector,
                                                    const lv_32fc_t* aVector,
                                                    unsigned int num_points)
{
    lv_32fc_t* cPtr = cVector;
    const lv_32fc_t* aPtr = aVector;
    unsigned int number = 0;
 
    for (number = 0; number < num_points; number++) {
        *cPtr++ = lv_conj(*aPtr++);
    }
}
#endif /* LV_HAVE_GENERIC */
 
 
#endif /* INCLUDED_volk_32fc_conjugate_32fc_u_H */
#ifndef INCLUDED_volk_32fc_conjugate_32fc_a_H
#define INCLUDED_volk_32fc_conjugate_32fc_a_H
 
#include <float.h>
#include <inttypes.h>
#include <stdio.h>
#include <volk/volk_complex.h>
 
#ifdef LV_HAVE_AVX
#include <immintrin.h>
 
static inline void volk_32fc_conjugate_32fc_a_avx(lv_32fc_t* cVector,
                                                  const lv_32fc_t* aVector,
                                                  unsigned int num_points)
{
    unsigned int number = 0;
    const unsigned int quarterPoints = num_points / 4;
 
    __m256 x;
    lv_32fc_t* c = cVector;
    const lv_32fc_t* a = aVector;
 
    __m256 conjugator = _mm256_setr_ps(0, -0.f, 0, -0.f, 0, -0.f, 0, -0.f);
 
    for (; number < quarterPoints; number++) {
 
        x = _mm256_load_ps((float*)a); // Load the complex data as ar,ai,br,bi
 
        x = _mm256_xor_ps(x, conjugator); // conjugate register
 
        _mm256_store_ps((float*)c, x); // Store the results back into the C container
 
        a += 4;
        c += 4;
    }
 
    number = quarterPoints * 4;
 
    for (; number < num_points; number++) {
        *c++ = lv_conj(*a++);
    }
}
#endif /* LV_HAVE_AVX */
 
#ifdef LV_HAVE_SSE3
#include <pmmintrin.h>
 
static inline void volk_32fc_conjugate_32fc_a_sse3(lv_32fc_t* cVector,
                                                   const lv_32fc_t* aVector,
                                                   unsigned int num_points)
{
    unsigned int number = 0;
    const unsigned int halfPoints = num_points / 2;
 
    __m128 x;
    lv_32fc_t* c = cVector;
    const lv_32fc_t* a = aVector;
 
    __m128 conjugator = _mm_setr_ps(0, -0.f, 0, -0.f);
 
    for (; number < halfPoints; number++) {
 
        x = _mm_load_ps((float*)a); // Load the complex data as ar,ai,br,bi
 
        x = _mm_xor_ps(x, conjugator); // conjugate register
 
        _mm_store_ps((float*)c, x); // Store the results back into the C container
 
        a += 2;
        c += 2;
    }
 
    if ((num_points % 2) != 0) {
        *c = lv_conj(*a);
    }
}
#endif /* LV_HAVE_SSE3 */
 
#ifdef LV_HAVE_NEON
#include <arm_neon.h>
 
static inline void volk_32fc_conjugate_32fc_a_neon(lv_32fc_t* cVector,
                                                   const lv_32fc_t* aVector,
                                                   unsigned int num_points)
{
    unsigned int number;
    const unsigned int quarterPoints = num_points / 4;
 
    float32x4x2_t x;
    lv_32fc_t* c = cVector;
    const lv_32fc_t* a = aVector;
 
    for (number = 0; number < quarterPoints; number++) {
        __VOLK_PREFETCH(a + 4);
        x = vld2q_f32((float*)a); // Load the complex data as ar,br,cr,dr; ai,bi,ci,di
 
        // xor the imaginary lane
        x.val[1] = vnegq_f32(x.val[1]);
 
        vst2q_f32((float*)c, x); // Store the results back into the C container
 
        a += 4;
        c += 4;
    }
 
    for (number = quarterPoints * 4; number < num_points; number++) {
        *c++ = lv_conj(*a++);
    }
}
#endif /* LV_HAVE_NEON */
 
 
#ifdef LV_HAVE_GENERIC
 
static inline void volk_32fc_conjugate_32fc_a_generic(lv_32fc_t* cVector,
                                                      const lv_32fc_t* aVector,
                                                      unsigned int num_points)
{
    lv_32fc_t* cPtr = cVector;
    const lv_32fc_t* aPtr = aVector;
    unsigned int number = 0;
 
    for (number = 0; number < num_points; number++) {
        *cPtr++ = lv_conj(*aPtr++);
    }
}
#endif /* LV_HAVE_GENERIC */
 
 
#endif /* INCLUDED_volk_32fc_conjugate_32fc_a_H */