volk_32fc_s32f_deinterleave_real_16i.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_32fc_s32f_deinterleave_real_16i_a_H
#define INCLUDED_volk_32fc_s32f_deinterleave_real_16i_a_H
 
#include <inttypes.h>
#include <stdio.h>
#include <volk/volk_common.h>
 
 
#ifdef LV_HAVE_AVX2
#include <immintrin.h>
 
static inline void
volk_32fc_s32f_deinterleave_real_16i_a_avx2(int16_t* iBuffer,
                                            const lv_32fc_t* complexVector,
                                            const float scalar,
                                            unsigned int num_points)
{
    unsigned int number = 0;
    const unsigned int eighthPoints = num_points / 8;
 
    const float* complexVectorPtr = (float*)complexVector;
    int16_t* iBufferPtr = iBuffer;
 
    __m256 vScalar = _mm256_set1_ps(scalar);
 
    __m256 cplxValue1, cplxValue2, iValue;
    __m256i a;
    __m128i b;
 
    __m256i idx = _mm256_set_epi32(3, 3, 3, 3, 5, 1, 4, 0);
 
    for (; number < eighthPoints; number++) {
        cplxValue1 = _mm256_load_ps(complexVectorPtr);
        complexVectorPtr += 8;
 
        cplxValue2 = _mm256_load_ps(complexVectorPtr);
        complexVectorPtr += 8;
 
        // Arrange in i1i2i3i4 format
        iValue = _mm256_shuffle_ps(cplxValue1, cplxValue2, _MM_SHUFFLE(2, 0, 2, 0));
 
        iValue = _mm256_mul_ps(iValue, vScalar);
 
        iValue = _mm256_round_ps(iValue, _MM_FROUND_TO_ZERO);
        a = _mm256_cvtps_epi32(iValue);
        a = _mm256_packs_epi32(a, a);
        a = _mm256_permutevar8x32_epi32(a, idx);
        b = _mm256_extracti128_si256(a, 0);
 
        _mm_store_si128((__m128i*)iBufferPtr, b);
        iBufferPtr += 8;
    }
 
    number = eighthPoints * 8;
    iBufferPtr = &iBuffer[number];
    for (; number < num_points; number++) {
        *iBufferPtr++ = (int16_t)(*complexVectorPtr++ * scalar);
        complexVectorPtr++;
    }
}
 
 
#endif /* LV_HAVE_AVX2 */
 
#ifdef LV_HAVE_SSE
#include <xmmintrin.h>
 
static inline void
volk_32fc_s32f_deinterleave_real_16i_a_sse(int16_t* iBuffer,
                                           const lv_32fc_t* complexVector,
                                           const float scalar,
                                           unsigned int num_points)
{
    unsigned int number = 0;
    const unsigned int quarterPoints = num_points / 4;
 
    const float* complexVectorPtr = (float*)complexVector;
    int16_t* iBufferPtr = iBuffer;
 
    __m128 vScalar = _mm_set_ps1(scalar);
 
    __m128 cplxValue1, cplxValue2, iValue;
 
    __VOLK_ATTR_ALIGNED(16) float floatBuffer[4];
 
    for (; number < quarterPoints; number++) {
        cplxValue1 = _mm_load_ps(complexVectorPtr);
        complexVectorPtr += 4;
 
        cplxValue2 = _mm_load_ps(complexVectorPtr);
        complexVectorPtr += 4;
 
        // Arrange in i1i2i3i4 format
        iValue = _mm_shuffle_ps(cplxValue1, cplxValue2, _MM_SHUFFLE(2, 0, 2, 0));
 
        iValue = _mm_mul_ps(iValue, vScalar);
 
        _mm_store_ps(floatBuffer, iValue);
        *iBufferPtr++ = (int16_t)(floatBuffer[0]);
        *iBufferPtr++ = (int16_t)(floatBuffer[1]);
        *iBufferPtr++ = (int16_t)(floatBuffer[2]);
        *iBufferPtr++ = (int16_t)(floatBuffer[3]);
    }
 
    number = quarterPoints * 4;
    iBufferPtr = &iBuffer[number];
    for (; number < num_points; number++) {
        *iBufferPtr++ = (int16_t)(*complexVectorPtr++ * scalar);
        complexVectorPtr++;
    }
}
 
#endif /* LV_HAVE_SSE */
 
 
#ifdef LV_HAVE_GENERIC
 
static inline void
volk_32fc_s32f_deinterleave_real_16i_generic(int16_t* iBuffer,
                                             const lv_32fc_t* complexVector,
                                             const float scalar,
                                             unsigned int num_points)
{
    const float* complexVectorPtr = (float*)complexVector;
    int16_t* iBufferPtr = iBuffer;
    unsigned int number = 0;
    for (number = 0; number < num_points; number++) {
        *iBufferPtr++ = (int16_t)(*complexVectorPtr++ * scalar);
        complexVectorPtr++;
    }
}
 
#endif /* LV_HAVE_GENERIC */
 
#endif /* INCLUDED_volk_32fc_s32f_deinterleave_real_16i_a_H */
 
#ifndef INCLUDED_volk_32fc_s32f_deinterleave_real_16i_u_H
#define INCLUDED_volk_32fc_s32f_deinterleave_real_16i_u_H
 
#include <inttypes.h>
#include <stdio.h>
#include <volk/volk_common.h>
 
#ifdef LV_HAVE_AVX2
#include <immintrin.h>
 
static inline void
volk_32fc_s32f_deinterleave_real_16i_u_avx2(int16_t* iBuffer,
                                            const lv_32fc_t* complexVector,
                                            const float scalar,
                                            unsigned int num_points)
{
    unsigned int number = 0;
    const unsigned int eighthPoints = num_points / 8;
 
    const float* complexVectorPtr = (float*)complexVector;
    int16_t* iBufferPtr = iBuffer;
 
    __m256 vScalar = _mm256_set1_ps(scalar);
 
    __m256 cplxValue1, cplxValue2, iValue;
    __m256i a;
    __m128i b;
 
    __m256i idx = _mm256_set_epi32(3, 3, 3, 3, 5, 1, 4, 0);
 
    for (; number < eighthPoints; number++) {
        cplxValue1 = _mm256_loadu_ps(complexVectorPtr);
        complexVectorPtr += 8;
 
        cplxValue2 = _mm256_loadu_ps(complexVectorPtr);
        complexVectorPtr += 8;
 
        // Arrange in i1i2i3i4 format
        iValue = _mm256_shuffle_ps(cplxValue1, cplxValue2, _MM_SHUFFLE(2, 0, 2, 0));
 
        iValue = _mm256_mul_ps(iValue, vScalar);
 
        iValue = _mm256_round_ps(iValue, _MM_FROUND_TO_ZERO);
        a = _mm256_cvtps_epi32(iValue);
        a = _mm256_packs_epi32(a, a);
        a = _mm256_permutevar8x32_epi32(a, idx);
        b = _mm256_extracti128_si256(a, 0);
 
        _mm_storeu_si128((__m128i*)iBufferPtr, b);
        iBufferPtr += 8;
    }
 
    number = eighthPoints * 8;
    iBufferPtr = &iBuffer[number];
    for (; number < num_points; number++) {
        *iBufferPtr++ = (int16_t)(*complexVectorPtr++ * scalar);
        complexVectorPtr++;
    }
}
 
#endif /* LV_HAVE_AVX2 */
 
#endif /* INCLUDED_volk_32fc_s32f_deinterleave_real_16i_u_H */