volk_32fc_deinterleave_imag_32f.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_deinterleave_imag_32f_a_H
#define INCLUDED_volk_32fc_deinterleave_imag_32f_a_H
 
#include <inttypes.h>
#include <stdio.h>
 
#ifdef LV_HAVE_AVX
#include <immintrin.h>
 
static inline void volk_32fc_deinterleave_imag_32f_a_avx(float* qBuffer,
                                                         const lv_32fc_t* complexVector,
                                                         unsigned int num_points)
{
    unsigned int number = 0;
    const unsigned int eighthPoints = num_points / 8;
    const float* complexVectorPtr = (const float*)complexVector;
    float* qBufferPtr = qBuffer;
 
    __m256 cplxValue1, cplxValue2, complex1, complex2, qValue;
    for (; number < eighthPoints; number++) {
 
        cplxValue1 = _mm256_load_ps(complexVectorPtr);
        complexVectorPtr += 8;
 
        cplxValue2 = _mm256_load_ps(complexVectorPtr);
        complexVectorPtr += 8;
 
        complex1 = _mm256_permute2f128_ps(cplxValue1, cplxValue2, 0x20);
        complex2 = _mm256_permute2f128_ps(cplxValue1, cplxValue2, 0x31);
 
        // Arrange in q1q2q3q4 format
        qValue = _mm256_shuffle_ps(complex1, complex2, 0xdd);
 
        _mm256_store_ps(qBufferPtr, qValue);
 
        qBufferPtr += 8;
    }
 
    number = eighthPoints * 8;
    for (; number < num_points; number++) {
        complexVectorPtr++;
        *qBufferPtr++ = *complexVectorPtr++;
    }
}
#endif /* LV_HAVE_AVX */
 
#ifdef LV_HAVE_SSE
#include <xmmintrin.h>
 
static inline void volk_32fc_deinterleave_imag_32f_a_sse(float* qBuffer,
                                                         const lv_32fc_t* complexVector,
                                                         unsigned int num_points)
{
    unsigned int number = 0;
    const unsigned int quarterPoints = num_points / 4;
 
    const float* complexVectorPtr = (const float*)complexVector;
    float* qBufferPtr = qBuffer;
 
    __m128 cplxValue1, cplxValue2, iValue;
    for (; number < quarterPoints; number++) {
 
        cplxValue1 = _mm_load_ps(complexVectorPtr);
        complexVectorPtr += 4;
 
        cplxValue2 = _mm_load_ps(complexVectorPtr);
        complexVectorPtr += 4;
 
        // Arrange in q1q2q3q4 format
        iValue = _mm_shuffle_ps(cplxValue1, cplxValue2, _MM_SHUFFLE(3, 1, 3, 1));
 
        _mm_store_ps(qBufferPtr, iValue);
 
        qBufferPtr += 4;
    }
 
    number = quarterPoints * 4;
    for (; number < num_points; number++) {
        complexVectorPtr++;
        *qBufferPtr++ = *complexVectorPtr++;
    }
}
#endif /* LV_HAVE_SSE */
 
#ifdef LV_HAVE_NEON
#include <arm_neon.h>
 
static inline void volk_32fc_deinterleave_imag_32f_neon(float* qBuffer,
                                                        const lv_32fc_t* complexVector,
                                                        unsigned int num_points)
{
    unsigned int number = 0;
    unsigned int quarter_points = num_points / 4;
    const float* complexVectorPtr = (float*)complexVector;
    float* qBufferPtr = qBuffer;
    float32x4x2_t complexInput;
 
    for (number = 0; number < quarter_points; number++) {
        complexInput = vld2q_f32(complexVectorPtr);
        vst1q_f32(qBufferPtr, complexInput.val[1]);
        complexVectorPtr += 8;
        qBufferPtr += 4;
    }
 
    for (number = quarter_points * 4; number < num_points; number++) {
        complexVectorPtr++;
        *qBufferPtr++ = *complexVectorPtr++;
    }
}
#endif /* LV_HAVE_NEON */
 
#ifdef LV_HAVE_GENERIC
 
static inline void volk_32fc_deinterleave_imag_32f_generic(float* qBuffer,
                                                           const lv_32fc_t* complexVector,
                                                           unsigned int num_points)
{
    unsigned int number = 0;
    const float* complexVectorPtr = (float*)complexVector;
    float* qBufferPtr = qBuffer;
    for (number = 0; number < num_points; number++) {
        complexVectorPtr++;
        *qBufferPtr++ = *complexVectorPtr++;
    }
}
#endif /* LV_HAVE_GENERIC */
 
 
#endif /* INCLUDED_volk_32fc_deinterleave_imag_32f_a_H */
 
#ifndef INCLUDED_volk_32fc_deinterleave_imag_32f_u_H
#define INCLUDED_volk_32fc_deinterleave_imag_32f_u_H
 
#include <inttypes.h>
#include <stdio.h>
 
#ifdef LV_HAVE_AVX
#include <immintrin.h>
 
static inline void volk_32fc_deinterleave_imag_32f_u_avx(float* qBuffer,
                                                         const lv_32fc_t* complexVector,
                                                         unsigned int num_points)
{
    unsigned int number = 0;
    const unsigned int eighthPoints = num_points / 8;
    const float* complexVectorPtr = (const float*)complexVector;
    float* qBufferPtr = qBuffer;
 
    __m256 cplxValue1, cplxValue2, complex1, complex2, qValue;
    for (; number < eighthPoints; number++) {
 
        cplxValue1 = _mm256_loadu_ps(complexVectorPtr);
        complexVectorPtr += 8;
 
        cplxValue2 = _mm256_loadu_ps(complexVectorPtr);
        complexVectorPtr += 8;
 
        complex1 = _mm256_permute2f128_ps(cplxValue1, cplxValue2, 0x20);
        complex2 = _mm256_permute2f128_ps(cplxValue1, cplxValue2, 0x31);
 
        // Arrange in q1q2q3q4 format
        qValue = _mm256_shuffle_ps(complex1, complex2, 0xdd);
 
        _mm256_storeu_ps(qBufferPtr, qValue);
 
        qBufferPtr += 8;
    }
 
    number = eighthPoints * 8;
    for (; number < num_points; number++) {
        complexVectorPtr++;
        *qBufferPtr++ = *complexVectorPtr++;
    }
}
#endif /* LV_HAVE_AVX */
#endif /* INCLUDED_volk_32fc_deinterleave_imag_32f_u_H */