volk_32f_s32f_normalize.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_32f_s32f_normalize_a_H
#define INCLUDED_volk_32f_s32f_normalize_a_H
 
#include <inttypes.h>
#include <stdio.h>
 
#ifdef LV_HAVE_AVX
#include <immintrin.h>
 
static inline void volk_32f_s32f_normalize_a_avx(float* vecBuffer,
                                                 const float scalar,
                                                 unsigned int num_points)
{
    unsigned int number = 0;
    float* inputPtr = vecBuffer;
 
    const float invScalar = 1.0 / scalar;
    __m256 vecScalar = _mm256_set1_ps(invScalar);
 
    __m256 input1;
 
    const uint64_t eighthPoints = num_points / 8;
    for (; number < eighthPoints; number++) {
 
        input1 = _mm256_load_ps(inputPtr);
 
        input1 = _mm256_mul_ps(input1, vecScalar);
 
        _mm256_store_ps(inputPtr, input1);
 
        inputPtr += 8;
    }
 
    number = eighthPoints * 8;
    for (; number < num_points; number++) {
        *inputPtr *= invScalar;
        inputPtr++;
    }
}
#endif /* LV_HAVE_AVX */
 
#ifdef LV_HAVE_SSE
#include <xmmintrin.h>
 
static inline void volk_32f_s32f_normalize_a_sse(float* vecBuffer,
                                                 const float scalar,
                                                 unsigned int num_points)
{
    unsigned int number = 0;
    float* inputPtr = vecBuffer;
 
    const float invScalar = 1.0 / scalar;
    __m128 vecScalar = _mm_set_ps1(invScalar);
 
    __m128 input1;
 
    const uint64_t quarterPoints = num_points / 4;
    for (; number < quarterPoints; number++) {
 
        input1 = _mm_load_ps(inputPtr);
 
        input1 = _mm_mul_ps(input1, vecScalar);
 
        _mm_store_ps(inputPtr, input1);
 
        inputPtr += 4;
    }
 
    number = quarterPoints * 4;
    for (; number < num_points; number++) {
        *inputPtr *= invScalar;
        inputPtr++;
    }
}
#endif /* LV_HAVE_SSE */
 
#ifdef LV_HAVE_GENERIC
 
static inline void volk_32f_s32f_normalize_generic(float* vecBuffer,
                                                   const float scalar,
                                                   unsigned int num_points)
{
    unsigned int number = 0;
    float* inputPtr = vecBuffer;
    const float invScalar = 1.0 / scalar;
    for (number = 0; number < num_points; number++) {
        *inputPtr *= invScalar;
        inputPtr++;
    }
}
#endif /* LV_HAVE_GENERIC */
 
#ifdef LV_HAVE_ORC
 
extern void volk_32f_s32f_normalize_a_orc_impl(float* dst,
                                               float* src,
                                               const float scalar,
                                               int num_points);
static inline void volk_32f_s32f_normalize_u_orc(float* vecBuffer,
                                                 const float scalar,
                                                 unsigned int num_points)
{
    float invscalar = 1.0 / scalar;
    volk_32f_s32f_normalize_a_orc_impl(vecBuffer, vecBuffer, invscalar, num_points);
}
#endif /* LV_HAVE_GENERIC */
 
#endif /* INCLUDED_volk_32f_s32f_normalize_a_H */
 
#ifndef INCLUDED_volk_32f_s32f_normalize_u_H
#define INCLUDED_volk_32f_s32f_normalize_u_H
 
#include <inttypes.h>
#include <stdio.h>
#ifdef LV_HAVE_AVX
#include <immintrin.h>
 
static inline void volk_32f_s32f_normalize_u_avx(float* vecBuffer,
                                                 const float scalar,
                                                 unsigned int num_points)
{
    unsigned int number = 0;
    float* inputPtr = vecBuffer;
 
    const float invScalar = 1.0 / scalar;
    __m256 vecScalar = _mm256_set1_ps(invScalar);
 
    __m256 input1;
 
    const uint64_t eighthPoints = num_points / 8;
    for (; number < eighthPoints; number++) {
 
        input1 = _mm256_loadu_ps(inputPtr);
 
        input1 = _mm256_mul_ps(input1, vecScalar);
 
        _mm256_storeu_ps(inputPtr, input1);
 
        inputPtr += 8;
    }
 
    number = eighthPoints * 8;
    for (; number < num_points; number++) {
        *inputPtr *= invScalar;
        inputPtr++;
    }
}
#endif /* LV_HAVE_AVX */
 
#ifdef LV_HAVE_NEON
#include <arm_neon.h>
 
static inline void volk_32f_s32f_normalize_neon(float* vecBuffer,
                                                const float scalar,
                                                unsigned int num_points)
{
    unsigned int number = 0;
    float* inputPtr = vecBuffer;
    const float invScalar = 1.0f / scalar;
    float32x4_t vInvScalar = vdupq_n_f32(invScalar);
    const unsigned int quarter_points = num_points / 4;
 
    for (; number < quarter_points; number++) {
        float32x4_t input = vld1q_f32(inputPtr);
        input = vmulq_f32(input, vInvScalar);
        vst1q_f32(inputPtr, input);
        inputPtr += 4;
    }
 
    number = quarter_points * 4;
    for (; number < num_points; number++) {
        *inputPtr++ *= invScalar;
    }
}
#endif /* LV_HAVE_NEON */
 
#ifdef LV_HAVE_NEONV8
#include <arm_neon.h>
 
static inline void volk_32f_s32f_normalize_neonv8(float* vecBuffer,
                                                  const float scalar,
                                                  unsigned int num_points)
{
    unsigned int number = 0;
    float* inputPtr = vecBuffer;
    const float invScalar = 1.0f / scalar;
    float32x4_t vInvScalar = vdupq_n_f32(invScalar);
    const unsigned int eighth_points = num_points / 8;
 
    for (; number < eighth_points; number++) {
        float32x4_t input0 = vld1q_f32(inputPtr);
        float32x4_t input1 = vld1q_f32(inputPtr + 4);
        __VOLK_PREFETCH(inputPtr + 8);
 
        input0 = vmulq_f32(input0, vInvScalar);
        input1 = vmulq_f32(input1, vInvScalar);
 
        vst1q_f32(inputPtr, input0);
        vst1q_f32(inputPtr + 4, input1);
        inputPtr += 8;
    }
 
    number = eighth_points * 8;
    for (; number < num_points; number++) {
        *inputPtr++ *= invScalar;
    }
}
#endif /* LV_HAVE_NEONV8 */
 
#ifdef LV_HAVE_RVV
#include <riscv_vector.h>
 
static inline void
volk_32f_s32f_normalize_rvv(float* vecBuffer, const float scalar, unsigned int num_points)
{
    size_t n = num_points;
    for (size_t vl; n > 0; n -= vl, vecBuffer += vl) {
        vl = __riscv_vsetvl_e32m8(n);
        vfloat32m8_t v = __riscv_vle32_v_f32m8(vecBuffer, vl);
        __riscv_vse32(vecBuffer, __riscv_vfmul(v, 1.0f / scalar, vl), vl);
    }
}
#endif /*LV_HAVE_RVV*/
 
#endif /* INCLUDED_volk_32f_s32f_normalize_u_H */