Loading...
Searching...
No Matches
volk_16i_s32f_convert_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_16i_s32f_convert_32f_u_H
#define INCLUDED_volk_16i_s32f_convert_32f_u_H
#include <inttypes.h>
#include <stdio.h>
#ifdef LV_HAVE_AVX2
#include <immintrin.h>
static inline void volk_16i_s32f_convert_32f_u_avx2(float* outputVector,
const int16_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int eighthPoints = num_points / 8;
float* outputVectorPtr = outputVector;
__m256 invScalar = _mm256_set1_ps(1.0 / scalar);
int16_t* inputPtr = (int16_t*)inputVector;
__m128i inputVal;
__m256i inputVal2;
__m256 ret;
for (; number < eighthPoints; number++) {
// Load the 8 values
inputVal = _mm_loadu_si128((__m128i*)inputPtr);
// Convert
inputVal2 = _mm256_cvtepi16_epi32(inputVal);
ret = _mm256_cvtepi32_ps(inputVal2);
ret = _mm256_mul_ps(ret, invScalar);
_mm256_storeu_ps(outputVectorPtr, ret);
outputVectorPtr += 8;
inputPtr += 8;
}
number = eighthPoints * 8;
for (; number < num_points; number++) {
outputVector[number] = ((float)(inputVector[number])) / scalar;
}
}
#endif /* LV_HAVE_AVX2 */
#ifdef LV_HAVE_AVX512F
#include <immintrin.h>
static inline void volk_16i_s32f_convert_32f_u_avx512(float* outputVector,
const int16_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int sixteenthPoints = num_points / 16;
float* outputVectorPtr = outputVector;
__m512 invScalar = _mm512_set1_ps(1.0 / scalar);
int16_t* inputPtr = (int16_t*)inputVector;
__m256i inputVal;
__m512i inputVal2;
__m512 ret;
for (; number < sixteenthPoints; number++) {
// Load 16 int16 values
inputVal = _mm256_loadu_si256((__m256i*)inputPtr);
// Convert int16 → int32 → float
inputVal2 = _mm512_cvtepi16_epi32(inputVal);
ret = _mm512_cvtepi32_ps(inputVal2);
ret = _mm512_mul_ps(ret, invScalar);
_mm512_storeu_ps(outputVectorPtr, ret);
outputVectorPtr += 16;
inputPtr += 16;
}
number = sixteenthPoints * 16;
for (; number < num_points; number++) {
outputVector[number] = ((float)(inputVector[number])) / scalar;
}
}
#endif /* LV_HAVE_AVX512F */
#ifdef LV_HAVE_AVX
#include <immintrin.h>
static inline void volk_16i_s32f_convert_32f_u_avx(float* outputVector,
const int16_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int eighthPoints = num_points / 8;
float* outputVectorPtr = outputVector;
__m128 invScalar = _mm_set_ps1(1.0 / scalar);
int16_t* inputPtr = (int16_t*)inputVector;
__m128i inputVal, inputVal2;
__m128 ret;
__m256 output;
__m256 dummy = _mm256_setzero_ps();
for (; number < eighthPoints; number++) {
// Load the 8 values
// inputVal = _mm_loadu_si128((__m128i*)inputPtr);
inputVal = _mm_loadu_si128((__m128i*)inputPtr);
// Shift the input data to the right by 64 bits ( 8 bytes )
inputVal2 = _mm_srli_si128(inputVal, 8);
// Convert the lower 4 values into 32 bit words
inputVal = _mm_cvtepi16_epi32(inputVal);
inputVal2 = _mm_cvtepi16_epi32(inputVal2);
ret = _mm_cvtepi32_ps(inputVal);
ret = _mm_mul_ps(ret, invScalar);
output = _mm256_insertf128_ps(dummy, ret, 0);
ret = _mm_cvtepi32_ps(inputVal2);
ret = _mm_mul_ps(ret, invScalar);
output = _mm256_insertf128_ps(output, ret, 1);
_mm256_storeu_ps(outputVectorPtr, output);
outputVectorPtr += 8;
inputPtr += 8;
}
number = eighthPoints * 8;
for (; number < num_points; number++) {
outputVector[number] = ((float)(inputVector[number])) / scalar;
}
}
#endif /* LV_HAVE_AVX */
#ifdef LV_HAVE_SSE4_1
#include <smmintrin.h>
static inline void volk_16i_s32f_convert_32f_u_sse4_1(float* outputVector,
const int16_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int eighthPoints = num_points / 8;
float* outputVectorPtr = outputVector;
__m128 invScalar = _mm_set_ps1(1.0 / scalar);
int16_t* inputPtr = (int16_t*)inputVector;
__m128i inputVal;
__m128i inputVal2;
__m128 ret;
for (; number < eighthPoints; number++) {
// Load the 8 values
inputVal = _mm_loadu_si128((__m128i*)inputPtr);
// Shift the input data to the right by 64 bits ( 8 bytes )
inputVal2 = _mm_srli_si128(inputVal, 8);
// Convert the lower 4 values into 32 bit words
inputVal = _mm_cvtepi16_epi32(inputVal);
inputVal2 = _mm_cvtepi16_epi32(inputVal2);
ret = _mm_cvtepi32_ps(inputVal);
ret = _mm_mul_ps(ret, invScalar);
_mm_storeu_ps(outputVectorPtr, ret);
outputVectorPtr += 4;
ret = _mm_cvtepi32_ps(inputVal2);
ret = _mm_mul_ps(ret, invScalar);
_mm_storeu_ps(outputVectorPtr, ret);
outputVectorPtr += 4;
inputPtr += 8;
}
number = eighthPoints * 8;
for (; number < num_points; number++) {
outputVector[number] = ((float)(inputVector[number])) / scalar;
}
}
#endif /* LV_HAVE_SSE4_1 */
#ifdef LV_HAVE_SSE
#include <xmmintrin.h>
static inline void volk_16i_s32f_convert_32f_u_sse(float* outputVector,
const int16_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int quarterPoints = num_points / 4;
float* outputVectorPtr = outputVector;
__m128 invScalar = _mm_set_ps1(1.0 / scalar);
int16_t* inputPtr = (int16_t*)inputVector;
__m128 ret;
for (; number < quarterPoints; number++) {
ret = _mm_set_ps((float)(inputPtr[3]),
(float)(inputPtr[2]),
(float)(inputPtr[1]),
(float)(inputPtr[0]));
ret = _mm_mul_ps(ret, invScalar);
_mm_storeu_ps(outputVectorPtr, ret);
inputPtr += 4;
outputVectorPtr += 4;
}
number = quarterPoints * 4;
for (; number < num_points; number++) {
outputVector[number] = (float)(inputVector[number]) / scalar;
}
}
#endif /* LV_HAVE_SSE */
#ifdef LV_HAVE_GENERIC
static inline void volk_16i_s32f_convert_32f_generic(float* outputVector,
const int16_t* inputVector,
const float scalar,
unsigned int num_points)
{
float* outputVectorPtr = outputVector;
const int16_t* inputVectorPtr = inputVector;
unsigned int number = 0;
for (number = 0; number < num_points; number++) {
*outputVectorPtr++ = ((float)(*inputVectorPtr++)) / scalar;
}
}
#endif /* LV_HAVE_GENERIC */
#ifdef LV_HAVE_NEON
#include <arm_neon.h>
static inline void volk_16i_s32f_convert_32f_neon(float* outputVector,
const int16_t* inputVector,
const float scalar,
unsigned int num_points)
{
float* outputPtr = outputVector;
const int16_t* inputPtr = inputVector;
unsigned int number = 0;
unsigned int eighth_points = num_points / 8;
int16x4x2_t input16;
int32x4_t input32_0, input32_1;
float32x4_t input_float_0, input_float_1;
float32x4x2_t output_float;
float32x4_t inv_scale;
inv_scale = vdupq_n_f32(1.0 / scalar);
// the generic disassembles to a 128-bit load
// and duplicates every instruction to operate on 64-bits
// at a time. This is only possible with lanes, which is faster
// than just doing a vld1_s16, but still slower.
for (number = 0; number < eighth_points; number++) {
input16 = vld2_s16(inputPtr);
// widen 16-bit int to 32-bit int
input32_0 = vmovl_s16(input16.val[0]);
input32_1 = vmovl_s16(input16.val[1]);
// convert 32-bit int to float with scale
input_float_0 = vcvtq_f32_s32(input32_0);
input_float_1 = vcvtq_f32_s32(input32_1);
output_float.val[0] = vmulq_f32(input_float_0, inv_scale);
output_float.val[1] = vmulq_f32(input_float_1, inv_scale);
vst2q_f32(outputPtr, output_float);
inputPtr += 8;
outputPtr += 8;
}
for (number = eighth_points * 8; number < num_points; number++) {
*outputPtr++ = ((float)(*inputPtr++)) / scalar;
}
}
#endif /* LV_HAVE_NEON */
#ifdef LV_HAVE_NEONV8
#include <arm_neon.h>
static inline void volk_16i_s32f_convert_32f_neonv8(float* outputVector,
const int16_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int n = num_points;
float* out = outputVector;
const int16_t* in = inputVector;
const float32x4_t inv_scale = vdupq_n_f32(1.0f / scalar);
/* Process 8 int16 values per iteration using 64-bit loads */
while (n >= 8) {
int16x4_t v0 = vld1_s16(in);
int16x4_t v1 = vld1_s16(in + 4);
__VOLK_PREFETCH(in + 16);
/* Widen int16 to int32, convert to float, scale */
float32x4_t f0 = vmulq_f32(vcvtq_f32_s32(vmovl_s16(v0)), inv_scale);
float32x4_t f1 = vmulq_f32(vcvtq_f32_s32(vmovl_s16(v1)), inv_scale);
vst1q_f32(out, f0);
vst1q_f32(out + 4, f1);
in += 8;
out += 8;
n -= 8;
}
/* Process remaining 4 values */
if (n >= 4) {
int16x4_t v0 = vld1_s16(in);
vst1q_f32(out, vmulq_f32(vcvtq_f32_s32(vmovl_s16(v0)), inv_scale));
in += 4;
out += 4;
n -= 4;
}
/* Scalar tail */
while (n > 0) {
*out++ = ((float)(*in++)) / scalar;
n--;
}
}
#endif /* LV_HAVE_NEONV8 */
#endif /* INCLUDED_volk_16i_s32f_convert_32f_u_H */
#ifndef INCLUDED_volk_16i_s32f_convert_32f_a_H
#define INCLUDED_volk_16i_s32f_convert_32f_a_H
#include <inttypes.h>
#include <stdio.h>
#ifdef LV_HAVE_AVX2
#include <immintrin.h>
static inline void volk_16i_s32f_convert_32f_a_avx2(float* outputVector,
const int16_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int eighthPoints = num_points / 8;
float* outputVectorPtr = outputVector;
__m256 invScalar = _mm256_set1_ps(1.0 / scalar);
int16_t* inputPtr = (int16_t*)inputVector;
__m128i inputVal;
__m256i inputVal2;
__m256 ret;
for (; number < eighthPoints; number++) {
// Load the 8 values
inputVal = _mm_load_si128((__m128i*)inputPtr);
// Convert
inputVal2 = _mm256_cvtepi16_epi32(inputVal);
ret = _mm256_cvtepi32_ps(inputVal2);
ret = _mm256_mul_ps(ret, invScalar);
_mm256_store_ps(outputVectorPtr, ret);
outputVectorPtr += 8;
inputPtr += 8;
}
number = eighthPoints * 8;
for (; number < num_points; number++) {
outputVector[number] = ((float)(inputVector[number])) / scalar;
}
}
#endif /* LV_HAVE_AVX2 */
#ifdef LV_HAVE_AVX512F
#include <immintrin.h>
static inline void volk_16i_s32f_convert_32f_a_avx512(float* outputVector,
const int16_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int sixteenthPoints = num_points / 16;
float* outputVectorPtr = outputVector;
__m512 invScalar = _mm512_set1_ps(1.0 / scalar);
int16_t* inputPtr = (int16_t*)inputVector;
__m256i inputVal;
__m512i inputVal2;
__m512 ret;
for (; number < sixteenthPoints; number++) {
// Load 16 int16 values
inputVal = _mm256_load_si256((__m256i*)inputPtr);
// Convert int16 → int32 → float
inputVal2 = _mm512_cvtepi16_epi32(inputVal);
ret = _mm512_cvtepi32_ps(inputVal2);
ret = _mm512_mul_ps(ret, invScalar);
_mm512_store_ps(outputVectorPtr, ret);
outputVectorPtr += 16;
inputPtr += 16;
}
number = sixteenthPoints * 16;
for (; number < num_points; number++) {
outputVector[number] = ((float)(inputVector[number])) / scalar;
}
}
#endif /* LV_HAVE_AVX512F */
#ifdef LV_HAVE_AVX
#include <immintrin.h>
static inline void volk_16i_s32f_convert_32f_a_avx(float* outputVector,
const int16_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int eighthPoints = num_points / 8;
float* outputVectorPtr = outputVector;
__m128 invScalar = _mm_set_ps1(1.0 / scalar);
int16_t* inputPtr = (int16_t*)inputVector;
__m128i inputVal, inputVal2;
__m128 ret;
__m256 output;
__m256 dummy = _mm256_setzero_ps();
for (; number < eighthPoints; number++) {
// Load the 8 values
// inputVal = _mm_loadu_si128((__m128i*)inputPtr);
inputVal = _mm_load_si128((__m128i*)inputPtr);
// Shift the input data to the right by 64 bits ( 8 bytes )
inputVal2 = _mm_srli_si128(inputVal, 8);
// Convert the lower 4 values into 32 bit words
inputVal = _mm_cvtepi16_epi32(inputVal);
inputVal2 = _mm_cvtepi16_epi32(inputVal2);
ret = _mm_cvtepi32_ps(inputVal);
ret = _mm_mul_ps(ret, invScalar);
output = _mm256_insertf128_ps(dummy, ret, 0);
ret = _mm_cvtepi32_ps(inputVal2);
ret = _mm_mul_ps(ret, invScalar);
output = _mm256_insertf128_ps(output, ret, 1);
_mm256_store_ps(outputVectorPtr, output);
outputVectorPtr += 8;
inputPtr += 8;
}
number = eighthPoints * 8;
for (; number < num_points; number++) {
outputVector[number] = ((float)(inputVector[number])) / scalar;
}
}
#endif /* LV_HAVE_AVX */
#ifdef LV_HAVE_SSE4_1
#include <smmintrin.h>
static inline void volk_16i_s32f_convert_32f_a_sse4_1(float* outputVector,
const int16_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int eighthPoints = num_points / 8;
float* outputVectorPtr = outputVector;
__m128 invScalar = _mm_set_ps1(1.0 / scalar);
int16_t* inputPtr = (int16_t*)inputVector;
__m128i inputVal;
__m128i inputVal2;
__m128 ret;
for (; number < eighthPoints; number++) {
// Load the 8 values
inputVal = _mm_loadu_si128((__m128i*)inputPtr);
// Shift the input data to the right by 64 bits ( 8 bytes )
inputVal2 = _mm_srli_si128(inputVal, 8);
// Convert the lower 4 values into 32 bit words
inputVal = _mm_cvtepi16_epi32(inputVal);
inputVal2 = _mm_cvtepi16_epi32(inputVal2);
ret = _mm_cvtepi32_ps(inputVal);
ret = _mm_mul_ps(ret, invScalar);
_mm_storeu_ps(outputVectorPtr, ret);
outputVectorPtr += 4;
ret = _mm_cvtepi32_ps(inputVal2);
ret = _mm_mul_ps(ret, invScalar);
_mm_storeu_ps(outputVectorPtr, ret);
outputVectorPtr += 4;
inputPtr += 8;
}
number = eighthPoints * 8;
for (; number < num_points; number++) {
outputVector[number] = ((float)(inputVector[number])) / scalar;
}
}
#endif /* LV_HAVE_SSE4_1 */
#ifdef LV_HAVE_SSE
#include <xmmintrin.h>
static inline void volk_16i_s32f_convert_32f_a_sse(float* outputVector,
const int16_t* inputVector,
const float scalar,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int quarterPoints = num_points / 4;
float* outputVectorPtr = outputVector;
__m128 invScalar = _mm_set_ps1(1.0 / scalar);
int16_t* inputPtr = (int16_t*)inputVector;
__m128 ret;
for (; number < quarterPoints; number++) {
ret = _mm_set_ps((float)(inputPtr[3]),
(float)(inputPtr[2]),
(float)(inputPtr[1]),
(float)(inputPtr[0]));
ret = _mm_mul_ps(ret, invScalar);
_mm_storeu_ps(outputVectorPtr, ret);
inputPtr += 4;
outputVectorPtr += 4;
}
number = quarterPoints * 4;
for (; number < num_points; number++) {
outputVector[number] = (float)(inputVector[number]) / scalar;
}
}
#endif /* LV_HAVE_SSE */
#ifdef LV_HAVE_RVV
#include <riscv_vector.h>
static inline void volk_16i_s32f_convert_32f_rvv(float* outputVector,
const int16_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_e16m4(n);
vfloat32m8_t v = __riscv_vfwcvt_f(__riscv_vle16_v_i16m4(inputVector, vl), vl);
__riscv_vse32(outputVector, __riscv_vfmul(v, 1.0f / scalar, vl), vl);
}
}
#endif /*LV_HAVE_RVV*/
#endif /* INCLUDED_volk_16i_s32f_convert_32f_a_H */