volk_32fc_32f_multiply_32fc.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_32f_multiply_32fc_a_H
#define INCLUDED_volk_32fc_32f_multiply_32fc_a_H
 
#include <inttypes.h>
#include <stdio.h>
 
#ifdef LV_HAVE_AVX
#include <immintrin.h>
 
static inline void volk_32fc_32f_multiply_32fc_a_avx(lv_32fc_t* cVector,
                                                     const lv_32fc_t* aVector,
                                                     const float* bVector,
                                                     unsigned int num_points)
{
    unsigned int number = 0;
    const unsigned int eighthPoints = num_points / 8;
 
    lv_32fc_t* cPtr = cVector;
    const lv_32fc_t* aPtr = aVector;
    const float* bPtr = bVector;
 
    __m256 aVal1, aVal2, bVal, bVal1, bVal2, cVal1, cVal2;
 
    __m256i permute_mask = _mm256_set_epi32(3, 3, 2, 2, 1, 1, 0, 0);
 
    for (; number < eighthPoints; number++) {
 
        aVal1 = _mm256_load_ps((float*)aPtr);
        aPtr += 4;
 
        aVal2 = _mm256_load_ps((float*)aPtr);
        aPtr += 4;
 
        bVal = _mm256_load_ps(bPtr); // b0|b1|b2|b3|b4|b5|b6|b7
        bPtr += 8;
 
        bVal1 = _mm256_permute2f128_ps(bVal, bVal, 0x00); // b0|b1|b2|b3|b0|b1|b2|b3
        bVal2 = _mm256_permute2f128_ps(bVal, bVal, 0x11); // b4|b5|b6|b7|b4|b5|b6|b7
 
        bVal1 = _mm256_permutevar_ps(bVal1, permute_mask); // b0|b0|b1|b1|b2|b2|b3|b3
        bVal2 = _mm256_permutevar_ps(bVal2, permute_mask); // b4|b4|b5|b5|b6|b6|b7|b7
 
        cVal1 = _mm256_mul_ps(aVal1, bVal1);
        cVal2 = _mm256_mul_ps(aVal2, bVal2);
 
        _mm256_store_ps((float*)cPtr,
                        cVal1); // Store the results back into the C container
        cPtr += 4;
 
        _mm256_store_ps((float*)cPtr,
                        cVal2); // Store the results back into the C container
        cPtr += 4;
    }
 
    number = eighthPoints * 8;
    for (; number < num_points; ++number) {
        *cPtr++ = (*aPtr++) * (*bPtr++);
    }
}
#endif /* LV_HAVE_AVX */
 
 
#ifdef LV_HAVE_SSE
#include <xmmintrin.h>
 
static inline void volk_32fc_32f_multiply_32fc_a_sse(lv_32fc_t* cVector,
                                                     const lv_32fc_t* aVector,
                                                     const float* bVector,
                                                     unsigned int num_points)
{
    unsigned int number = 0;
    const unsigned int quarterPoints = num_points / 4;
 
    lv_32fc_t* cPtr = cVector;
    const lv_32fc_t* aPtr = aVector;
    const float* bPtr = bVector;
 
    __m128 aVal1, aVal2, bVal, bVal1, bVal2, cVal;
    for (; number < quarterPoints; number++) {
 
        aVal1 = _mm_load_ps((const float*)aPtr);
        aPtr += 2;
 
        aVal2 = _mm_load_ps((const float*)aPtr);
        aPtr += 2;
 
        bVal = _mm_load_ps(bPtr);
        bPtr += 4;
 
        bVal1 = _mm_shuffle_ps(bVal, bVal, _MM_SHUFFLE(1, 1, 0, 0));
        bVal2 = _mm_shuffle_ps(bVal, bVal, _MM_SHUFFLE(3, 3, 2, 2));
 
        cVal = _mm_mul_ps(aVal1, bVal1);
 
        _mm_store_ps((float*)cPtr, cVal); // Store the results back into the C container
        cPtr += 2;
 
        cVal = _mm_mul_ps(aVal2, bVal2);
 
        _mm_store_ps((float*)cPtr, cVal); // Store the results back into the C container
 
        cPtr += 2;
    }
 
    number = quarterPoints * 4;
    for (; number < num_points; number++) {
        *cPtr++ = (*aPtr++) * (*bPtr);
        bPtr++;
    }
}
#endif /* LV_HAVE_SSE */
 
 
#ifdef LV_HAVE_GENERIC
 
static inline void volk_32fc_32f_multiply_32fc_generic(lv_32fc_t* cVector,
                                                       const lv_32fc_t* aVector,
                                                       const float* bVector,
                                                       unsigned int num_points)
{
    lv_32fc_t* cPtr = cVector;
    const lv_32fc_t* aPtr = aVector;
    const float* bPtr = bVector;
    unsigned int number = 0;
 
    for (number = 0; number < num_points; number++) {
        *cPtr++ = (*aPtr++) * (*bPtr++);
    }
}
#endif /* LV_HAVE_GENERIC */
 
 
#ifdef LV_HAVE_NEON
#include <arm_neon.h>
 
static inline void volk_32fc_32f_multiply_32fc_neon(lv_32fc_t* cVector,
                                                    const lv_32fc_t* aVector,
                                                    const float* bVector,
                                                    unsigned int num_points)
{
    lv_32fc_t* cPtr = cVector;
    const lv_32fc_t* aPtr = aVector;
    const float* bPtr = bVector;
    unsigned int number = 0;
    unsigned int quarter_points = num_points / 4;
 
    float32x4x2_t inputVector, outputVector;
    float32x4_t tapsVector;
    for (number = 0; number < quarter_points; number++) {
        inputVector = vld2q_f32((float*)aPtr);
        tapsVector = vld1q_f32(bPtr);
 
        outputVector.val[0] = vmulq_f32(inputVector.val[0], tapsVector);
        outputVector.val[1] = vmulq_f32(inputVector.val[1], tapsVector);
 
        vst2q_f32((float*)cPtr, outputVector);
        aPtr += 4;
        bPtr += 4;
        cPtr += 4;
    }
 
    for (number = quarter_points * 4; number < num_points; number++) {
        *cPtr++ = (*aPtr++) * (*bPtr++);
    }
}
#endif /* LV_HAVE_NEON */
 
 
#ifdef LV_HAVE_ORC
 
extern void volk_32fc_32f_multiply_32fc_a_orc_impl(lv_32fc_t* cVector,
                                                   const lv_32fc_t* aVector,
                                                   const float* bVector,
                                                   unsigned int num_points);
 
static inline void volk_32fc_32f_multiply_32fc_u_orc(lv_32fc_t* cVector,
                                                     const lv_32fc_t* aVector,
                                                     const float* bVector,
                                                     unsigned int num_points)
{
    volk_32fc_32f_multiply_32fc_a_orc_impl(cVector, aVector, bVector, num_points);
}
 
#endif /* LV_HAVE_GENERIC */
 
 
#endif /* INCLUDED_volk_32fc_32f_multiply_32fc_a_H */