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volk_8i_s32f_convert_32f.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_8i_s32f_convert_32f_u_H
#define INCLUDED_volk_8i_s32f_convert_32f_u_H
#include <inttypes.h>
#include <stdio.h>
#ifdef LV_HAVE_AVX2
#include <immintrin.h>
static inline void volk_8i_s32f_convert_32f_u_avx2(float* outputVector,
const int8_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int sixteenthPoints = num_points / 16;
float* outputVectorPtr = outputVector;
const float iScalar = 1.0 / scalar;
__m256 invScalar = _mm256_set1_ps(iScalar);
const int8_t* inputVectorPtr = inputVector;
__m256 ret;
__m128i inputVal128;
__m256i interimVal;
for (; number < sixteenthPoints; number++) {
inputVal128 = _mm_loadu_si128((__m128i*)inputVectorPtr);
interimVal = _mm256_cvtepi8_epi32(inputVal128);
ret = _mm256_cvtepi32_ps(interimVal);
ret = _mm256_mul_ps(ret, invScalar);
_mm256_storeu_ps(outputVectorPtr, ret);
outputVectorPtr += 8;
inputVal128 = _mm_srli_si128(inputVal128, 8);
interimVal = _mm256_cvtepi8_epi32(inputVal128);
ret = _mm256_cvtepi32_ps(interimVal);
ret = _mm256_mul_ps(ret, invScalar);
_mm256_storeu_ps(outputVectorPtr, ret);
outputVectorPtr += 8;
inputVectorPtr += 16;
}
number = sixteenthPoints * 16;
for (; number < num_points; number++) {
outputVector[number] = (float)(inputVector[number]) * iScalar;
}
}
#endif /* LV_HAVE_AVX2 */
#ifdef LV_HAVE_AVX512F
#include <immintrin.h>
static inline void volk_8i_s32f_convert_32f_u_avx512(float* outputVector,
const int8_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int sixteenthPoints = num_points / 16;
float* outputVectorPtr = outputVector;
const float iScalar = 1.0 / scalar;
__m512 invScalar = _mm512_set1_ps(iScalar);
const int8_t* inputVectorPtr = inputVector;
__m512 ret;
__m128i inputVal128;
__m512i interimVal;
for (; number < sixteenthPoints; number++) {
inputVal128 = _mm_loadu_si128((__m128i*)inputVectorPtr);
interimVal = _mm512_cvtepi8_epi32(inputVal128);
ret = _mm512_cvtepi32_ps(interimVal);
ret = _mm512_mul_ps(ret, invScalar);
_mm512_storeu_ps(outputVectorPtr, ret);
outputVectorPtr += 16;
inputVectorPtr += 16;
}
number = sixteenthPoints * 16;
for (; number < num_points; number++) {
outputVector[number] = (float)(inputVector[number]) * iScalar;
}
}
#endif /* LV_HAVE_AVX512F */
#ifdef LV_HAVE_SSE4_1
#include <smmintrin.h>
static inline void volk_8i_s32f_convert_32f_u_sse4_1(float* outputVector,
const int8_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int sixteenthPoints = num_points / 16;
float* outputVectorPtr = outputVector;
const float iScalar = 1.0 / scalar;
__m128 invScalar = _mm_set_ps1(iScalar);
const int8_t* inputVectorPtr = inputVector;
__m128 ret;
__m128i inputVal;
__m128i interimVal;
for (; number < sixteenthPoints; number++) {
inputVal = _mm_loadu_si128((__m128i*)inputVectorPtr);
interimVal = _mm_cvtepi8_epi32(inputVal);
ret = _mm_cvtepi32_ps(interimVal);
ret = _mm_mul_ps(ret, invScalar);
_mm_storeu_ps(outputVectorPtr, ret);
outputVectorPtr += 4;
inputVal = _mm_srli_si128(inputVal, 4);
interimVal = _mm_cvtepi8_epi32(inputVal);
ret = _mm_cvtepi32_ps(interimVal);
ret = _mm_mul_ps(ret, invScalar);
_mm_storeu_ps(outputVectorPtr, ret);
outputVectorPtr += 4;
inputVal = _mm_srli_si128(inputVal, 4);
interimVal = _mm_cvtepi8_epi32(inputVal);
ret = _mm_cvtepi32_ps(interimVal);
ret = _mm_mul_ps(ret, invScalar);
_mm_storeu_ps(outputVectorPtr, ret);
outputVectorPtr += 4;
inputVal = _mm_srli_si128(inputVal, 4);
interimVal = _mm_cvtepi8_epi32(inputVal);
ret = _mm_cvtepi32_ps(interimVal);
ret = _mm_mul_ps(ret, invScalar);
_mm_storeu_ps(outputVectorPtr, ret);
outputVectorPtr += 4;
inputVectorPtr += 16;
}
number = sixteenthPoints * 16;
for (; number < num_points; number++) {
outputVector[number] = (float)(inputVector[number]) * iScalar;
}
}
#endif /* LV_HAVE_SSE4_1 */
#ifdef LV_HAVE_GENERIC
static inline void volk_8i_s32f_convert_32f_generic(float* outputVector,
const int8_t* inputVector,
const float scalar,
unsigned int num_points)
{
float* outputVectorPtr = outputVector;
const int8_t* inputVectorPtr = inputVector;
unsigned int number = 0;
const float iScalar = 1.0 / scalar;
for (number = 0; number < num_points; number++) {
*outputVectorPtr++ = ((float)(*inputVectorPtr++)) * iScalar;
}
}
#endif /* LV_HAVE_GENERIC */
#endif /* INCLUDED_VOLK_8s_CONVERT_32f_UNALIGNED8_H */
#ifndef INCLUDED_volk_8i_s32f_convert_32f_a_H
#define INCLUDED_volk_8i_s32f_convert_32f_a_H
#include <inttypes.h>
#include <stdio.h>
#ifdef LV_HAVE_AVX2
#include <immintrin.h>
static inline void volk_8i_s32f_convert_32f_a_avx2(float* outputVector,
const int8_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int sixteenthPoints = num_points / 16;
float* outputVectorPtr = outputVector;
const float iScalar = 1.0 / scalar;
__m256 invScalar = _mm256_set1_ps(iScalar);
const int8_t* inputVectorPtr = inputVector;
__m256 ret;
__m128i inputVal128;
__m256i interimVal;
for (; number < sixteenthPoints; number++) {
inputVal128 = _mm_load_si128((__m128i*)inputVectorPtr);
interimVal = _mm256_cvtepi8_epi32(inputVal128);
ret = _mm256_cvtepi32_ps(interimVal);
ret = _mm256_mul_ps(ret, invScalar);
_mm256_store_ps(outputVectorPtr, ret);
outputVectorPtr += 8;
inputVal128 = _mm_srli_si128(inputVal128, 8);
interimVal = _mm256_cvtepi8_epi32(inputVal128);
ret = _mm256_cvtepi32_ps(interimVal);
ret = _mm256_mul_ps(ret, invScalar);
_mm256_store_ps(outputVectorPtr, ret);
outputVectorPtr += 8;
inputVectorPtr += 16;
}
number = sixteenthPoints * 16;
for (; number < num_points; number++) {
outputVector[number] = (float)(inputVector[number]) * iScalar;
}
}
#endif /* LV_HAVE_AVX2 */
#ifdef LV_HAVE_AVX512F
#include <immintrin.h>
static inline void volk_8i_s32f_convert_32f_a_avx512(float* outputVector,
const int8_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int sixteenthPoints = num_points / 16;
float* outputVectorPtr = outputVector;
const float iScalar = 1.0 / scalar;
__m512 invScalar = _mm512_set1_ps(iScalar);
const int8_t* inputVectorPtr = inputVector;
__m512 ret;
__m128i inputVal128;
__m512i interimVal;
for (; number < sixteenthPoints; number++) {
inputVal128 = _mm_load_si128((__m128i*)inputVectorPtr);
interimVal = _mm512_cvtepi8_epi32(inputVal128);
ret = _mm512_cvtepi32_ps(interimVal);
ret = _mm512_mul_ps(ret, invScalar);
_mm512_store_ps(outputVectorPtr, ret);
outputVectorPtr += 16;
inputVectorPtr += 16;
}
number = sixteenthPoints * 16;
for (; number < num_points; number++) {
outputVector[number] = (float)(inputVector[number]) * iScalar;
}
}
#endif /* LV_HAVE_AVX512F */
#ifdef LV_HAVE_SSE4_1
#include <smmintrin.h>
static inline void volk_8i_s32f_convert_32f_a_sse4_1(float* outputVector,
const int8_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int sixteenthPoints = num_points / 16;
float* outputVectorPtr = outputVector;
const float iScalar = 1.0 / scalar;
__m128 invScalar = _mm_set_ps1(iScalar);
const int8_t* inputVectorPtr = inputVector;
__m128 ret;
__m128i inputVal;
__m128i interimVal;
for (; number < sixteenthPoints; number++) {
inputVal = _mm_load_si128((__m128i*)inputVectorPtr);
interimVal = _mm_cvtepi8_epi32(inputVal);
ret = _mm_cvtepi32_ps(interimVal);
ret = _mm_mul_ps(ret, invScalar);
_mm_store_ps(outputVectorPtr, ret);
outputVectorPtr += 4;
inputVal = _mm_srli_si128(inputVal, 4);
interimVal = _mm_cvtepi8_epi32(inputVal);
ret = _mm_cvtepi32_ps(interimVal);
ret = _mm_mul_ps(ret, invScalar);
_mm_store_ps(outputVectorPtr, ret);
outputVectorPtr += 4;
inputVal = _mm_srli_si128(inputVal, 4);
interimVal = _mm_cvtepi8_epi32(inputVal);
ret = _mm_cvtepi32_ps(interimVal);
ret = _mm_mul_ps(ret, invScalar);
_mm_store_ps(outputVectorPtr, ret);
outputVectorPtr += 4;
inputVal = _mm_srli_si128(inputVal, 4);
interimVal = _mm_cvtepi8_epi32(inputVal);
ret = _mm_cvtepi32_ps(interimVal);
ret = _mm_mul_ps(ret, invScalar);
_mm_store_ps(outputVectorPtr, ret);
outputVectorPtr += 4;
inputVectorPtr += 16;
}
number = sixteenthPoints * 16;
for (; number < num_points; number++) {
outputVector[number] = (float)(inputVector[number]) * iScalar;
}
}
#endif /* LV_HAVE_SSE4_1 */
#ifdef LV_HAVE_NEON
#include <arm_neon.h>
static inline void volk_8i_s32f_convert_32f_neon(float* outputVector,
const int8_t* inputVector,
const float scalar,
unsigned int num_points)
{
float* outputVectorPtr = outputVector;
const int8_t* inputVectorPtr = inputVector;
const float iScalar = 1.0 / scalar;
const float32x4_t qiScalar = vdupq_n_f32(iScalar);
int8x16_t inputVal;
int16x8_t lower;
int16x8_t higher;
float32x4_t outputFloat;
unsigned int number = 0;
const unsigned int sixteenthPoints = num_points / 16;
for (; number < sixteenthPoints; number++) {
inputVal = vld1q_s8(inputVectorPtr);
inputVectorPtr += 16;
lower = vmovl_s8(vget_low_s8(inputVal));
higher = vmovl_s8(vget_high_s8(inputVal));
outputFloat = vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_low_s16(lower))), qiScalar);
vst1q_f32(outputVectorPtr, outputFloat);
outputVectorPtr += 4;
outputFloat = vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_high_s16(lower))), qiScalar);
vst1q_f32(outputVectorPtr, outputFloat);
outputVectorPtr += 4;
outputFloat = vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_low_s16(higher))), qiScalar);
vst1q_f32(outputVectorPtr, outputFloat);
outputVectorPtr += 4;
outputFloat =
vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_high_s16(higher))), qiScalar);
vst1q_f32(outputVectorPtr, outputFloat);
outputVectorPtr += 4;
}
for (number = sixteenthPoints * 16; number < num_points; number++) {
*outputVectorPtr++ = ((float)(*inputVectorPtr++)) * iScalar;
}
}
#endif /* LV_HAVE_NEON */
#ifdef LV_HAVE_NEONV8
#include <arm_neon.h>
static inline void volk_8i_s32f_convert_32f_neonv8(float* outputVector,
const int8_t* inputVector,
const float scalar,
unsigned int num_points)
{
float* outputVectorPtr = outputVector;
const int8_t* inputVectorPtr = inputVector;
const float iScalar = 1.0f / scalar;
const float32x4_t qiScalar = vdupq_n_f32(iScalar);
const unsigned int thirtysecondPoints = num_points / 32;
for (unsigned int number = 0; number < thirtysecondPoints; number++) {
int8x16_t in0 = vld1q_s8(inputVectorPtr);
int8x16_t in1 = vld1q_s8(inputVectorPtr + 16);
__VOLK_PREFETCH(inputVectorPtr + 64);
/* Widen int8 -> int16 -> int32 -> float */
int16x8_t lo0 = vmovl_s8(vget_low_s8(in0));
int16x8_t hi0 = vmovl_s8(vget_high_s8(in0));
int16x8_t lo1 = vmovl_s8(vget_low_s8(in1));
int16x8_t hi1 = vmovl_s8(vget_high_s8(in1));
vst1q_f32(outputVectorPtr,
vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_low_s16(lo0))), qiScalar));
vst1q_f32(outputVectorPtr + 4,
vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_high_s16(lo0))), qiScalar));
vst1q_f32(outputVectorPtr + 8,
vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_low_s16(hi0))), qiScalar));
vst1q_f32(outputVectorPtr + 12,
vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_high_s16(hi0))), qiScalar));
vst1q_f32(outputVectorPtr + 16,
vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_low_s16(lo1))), qiScalar));
vst1q_f32(outputVectorPtr + 20,
vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_high_s16(lo1))), qiScalar));
vst1q_f32(outputVectorPtr + 24,
vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_low_s16(hi1))), qiScalar));
vst1q_f32(outputVectorPtr + 28,
vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_high_s16(hi1))), qiScalar));
inputVectorPtr += 32;
outputVectorPtr += 32;
}
for (unsigned int number = thirtysecondPoints * 32; number < num_points; number++) {
*outputVectorPtr++ = ((float)(*inputVectorPtr++)) * iScalar;
}
}
#endif /* LV_HAVE_NEONV8 */
#ifdef LV_HAVE_ORC
extern void volk_8i_s32f_convert_32f_a_orc_impl(float* outputVector,
const int8_t* inputVector,
const float scalar,
int num_points);
static inline void volk_8i_s32f_convert_32f_u_orc(float* outputVector,
const int8_t* inputVector,
const float scalar,
unsigned int num_points)
{
float invscalar = 1.0 / scalar;
volk_8i_s32f_convert_32f_a_orc_impl(outputVector, inputVector, invscalar, num_points);
}
#endif /* LV_HAVE_ORC */
#ifdef LV_HAVE_RVV
#include <riscv_vector.h>
static inline void volk_8i_s32f_convert_32f_rvv(float* outputVector,
const int8_t* inputVector,
const float scalar,
unsigned int num_points)
{
size_t n = num_points;
for (size_t vl; n > 0; n -= vl, inputVector += vl, outputVector += vl) {
vl = __riscv_vsetvl_e8m2(n);
vint16m4_t v = __riscv_vsext_vf2(__riscv_vle8_v_i8m2(inputVector, vl), vl);
__riscv_vse32(
outputVector, __riscv_vfmul(__riscv_vfwcvt_f(v, vl), 1.0f / scalar, vl), vl);
}
}
#endif /*LV_HAVE_RVV*/
#endif /* INCLUDED_VOLK_8s_CONVERT_32f_ALIGNED8_H */