volk_16i_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_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_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 */
 
 
#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_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_GENERIC
 
static inline void volk_16i_s32f_convert_32f_a_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 */
 
#endif /* INCLUDED_volk_16i_s32f_convert_32f_a_H */