| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* -*- c++ -*- */ | ||
| 2 | /* | ||
| 3 | * Copyright 2012, 2014 Free Software Foundation, Inc. | ||
| 4 | * | ||
| 5 | * This file is part of VOLK | ||
| 6 | * | ||
| 7 | * SPDX-License-Identifier: LGPL-3.0-or-later | ||
| 8 | */ | ||
| 9 | |||
| 10 | /*! | ||
| 11 | * \page volk_8i_s32f_convert_32f | ||
| 12 | * | ||
| 13 | * \b Overview | ||
| 14 | * | ||
| 15 | * Convert the input vector of 8-bit chars to a vector of floats. The | ||
| 16 | * floats are then divided by the scalar factor. shorts. | ||
| 17 | * | ||
| 18 | * <b>Dispatcher Prototype</b> | ||
| 19 | * \code | ||
| 20 | * void volk_8i_s32f_convert_32f(float* outputVector, const int8_t* inputVector, const | ||
| 21 | * float scalar, unsigned int num_points) \endcode | ||
| 22 | * | ||
| 23 | * \b Inputs | ||
| 24 | * \li inputVector: The input vector of 8-bit chars. | ||
| 25 | * \li scalar: the scaling factor used to divide the results of the conversion. | ||
| 26 | * \li num_points: The number of values. | ||
| 27 | * | ||
| 28 | * \b Outputs | ||
| 29 | * \li outputVector: The output 16-bit shorts. | ||
| 30 | * | ||
| 31 | * \b Example | ||
| 32 | * \code | ||
| 33 | * int N = 10000; | ||
| 34 | * | ||
| 35 | * volk_8i_s32f_convert_32f(); | ||
| 36 | * | ||
| 37 | * volk_free(x); | ||
| 38 | * \endcode | ||
| 39 | */ | ||
| 40 | |||
| 41 | #ifndef INCLUDED_volk_8i_s32f_convert_32f_u_H | ||
| 42 | #define INCLUDED_volk_8i_s32f_convert_32f_u_H | ||
| 43 | |||
| 44 | #include <inttypes.h> | ||
| 45 | #include <stdio.h> | ||
| 46 | |||
| 47 | #ifdef LV_HAVE_AVX2 | ||
| 48 | #include <immintrin.h> | ||
| 49 | |||
| 50 | 2 | static inline void volk_8i_s32f_convert_32f_u_avx2(float* outputVector, | |
| 51 | const int8_t* inputVector, | ||
| 52 | const float scalar, | ||
| 53 | unsigned int num_points) | ||
| 54 | { | ||
| 55 | 2 | unsigned int number = 0; | |
| 56 | 2 | const unsigned int sixteenthPoints = num_points / 16; | |
| 57 | |||
| 58 | 2 | float* outputVectorPtr = outputVector; | |
| 59 | 2 | const float iScalar = 1.0 / scalar; | |
| 60 | 2 | __m256 invScalar = _mm256_set1_ps(iScalar); | |
| 61 | 2 | const int8_t* inputVectorPtr = inputVector; | |
| 62 | __m256 ret; | ||
| 63 | __m128i inputVal128; | ||
| 64 | __m256i interimVal; | ||
| 65 | |||
| 66 |
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16384 | for (; number < sixteenthPoints; number++) { |
| 67 | 16382 | inputVal128 = _mm_loadu_si128((__m128i*)inputVectorPtr); | |
| 68 | |||
| 69 | 16382 | interimVal = _mm256_cvtepi8_epi32(inputVal128); | |
| 70 | 16382 | ret = _mm256_cvtepi32_ps(interimVal); | |
| 71 | 16382 | ret = _mm256_mul_ps(ret, invScalar); | |
| 72 | _mm256_storeu_ps(outputVectorPtr, ret); | ||
| 73 | 16382 | outputVectorPtr += 8; | |
| 74 | |||
| 75 | 16382 | inputVal128 = _mm_srli_si128(inputVal128, 8); | |
| 76 | 16382 | interimVal = _mm256_cvtepi8_epi32(inputVal128); | |
| 77 | 16382 | ret = _mm256_cvtepi32_ps(interimVal); | |
| 78 | 16382 | ret = _mm256_mul_ps(ret, invScalar); | |
| 79 | _mm256_storeu_ps(outputVectorPtr, ret); | ||
| 80 | 16382 | outputVectorPtr += 8; | |
| 81 | |||
| 82 | 16382 | inputVectorPtr += 16; | |
| 83 | } | ||
| 84 | |||
| 85 | 2 | number = sixteenthPoints * 16; | |
| 86 |
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32 | for (; number < num_points; number++) { |
| 87 | 30 | outputVector[number] = (float)(inputVector[number]) * iScalar; | |
| 88 | } | ||
| 89 | 2 | } | |
| 90 | #endif /* LV_HAVE_AVX2 */ | ||
| 91 | |||
| 92 | |||
| 93 | #ifdef LV_HAVE_SSE4_1 | ||
| 94 | #include <smmintrin.h> | ||
| 95 | |||
| 96 | 2 | static inline void volk_8i_s32f_convert_32f_u_sse4_1(float* outputVector, | |
| 97 | const int8_t* inputVector, | ||
| 98 | const float scalar, | ||
| 99 | unsigned int num_points) | ||
| 100 | { | ||
| 101 | 2 | unsigned int number = 0; | |
| 102 | 2 | const unsigned int sixteenthPoints = num_points / 16; | |
| 103 | |||
| 104 | 2 | float* outputVectorPtr = outputVector; | |
| 105 | 2 | const float iScalar = 1.0 / scalar; | |
| 106 | 2 | __m128 invScalar = _mm_set_ps1(iScalar); | |
| 107 | 2 | const int8_t* inputVectorPtr = inputVector; | |
| 108 | __m128 ret; | ||
| 109 | __m128i inputVal; | ||
| 110 | __m128i interimVal; | ||
| 111 | |||
| 112 |
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16384 | for (; number < sixteenthPoints; number++) { |
| 113 | 16382 | inputVal = _mm_loadu_si128((__m128i*)inputVectorPtr); | |
| 114 | |||
| 115 | 16382 | interimVal = _mm_cvtepi8_epi32(inputVal); | |
| 116 | 16382 | ret = _mm_cvtepi32_ps(interimVal); | |
| 117 | 16382 | ret = _mm_mul_ps(ret, invScalar); | |
| 118 | _mm_storeu_ps(outputVectorPtr, ret); | ||
| 119 | 16382 | outputVectorPtr += 4; | |
| 120 | |||
| 121 | 16382 | inputVal = _mm_srli_si128(inputVal, 4); | |
| 122 | 16382 | interimVal = _mm_cvtepi8_epi32(inputVal); | |
| 123 | 16382 | ret = _mm_cvtepi32_ps(interimVal); | |
| 124 | 16382 | ret = _mm_mul_ps(ret, invScalar); | |
| 125 | _mm_storeu_ps(outputVectorPtr, ret); | ||
| 126 | 16382 | outputVectorPtr += 4; | |
| 127 | |||
| 128 | 16382 | inputVal = _mm_srli_si128(inputVal, 4); | |
| 129 | 16382 | interimVal = _mm_cvtepi8_epi32(inputVal); | |
| 130 | 16382 | ret = _mm_cvtepi32_ps(interimVal); | |
| 131 | 16382 | ret = _mm_mul_ps(ret, invScalar); | |
| 132 | _mm_storeu_ps(outputVectorPtr, ret); | ||
| 133 | 16382 | outputVectorPtr += 4; | |
| 134 | |||
| 135 | 16382 | inputVal = _mm_srli_si128(inputVal, 4); | |
| 136 | 16382 | interimVal = _mm_cvtepi8_epi32(inputVal); | |
| 137 | 16382 | ret = _mm_cvtepi32_ps(interimVal); | |
| 138 | 16382 | ret = _mm_mul_ps(ret, invScalar); | |
| 139 | _mm_storeu_ps(outputVectorPtr, ret); | ||
| 140 | 16382 | outputVectorPtr += 4; | |
| 141 | |||
| 142 | 16382 | inputVectorPtr += 16; | |
| 143 | } | ||
| 144 | |||
| 145 | 2 | number = sixteenthPoints * 16; | |
| 146 |
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32 | for (; number < num_points; number++) { |
| 147 | 30 | outputVector[number] = (float)(inputVector[number]) * iScalar; | |
| 148 | } | ||
| 149 | 2 | } | |
| 150 | #endif /* LV_HAVE_SSE4_1 */ | ||
| 151 | |||
| 152 | #ifdef LV_HAVE_GENERIC | ||
| 153 | |||
| 154 | 2 | static inline void volk_8i_s32f_convert_32f_generic(float* outputVector, | |
| 155 | const int8_t* inputVector, | ||
| 156 | const float scalar, | ||
| 157 | unsigned int num_points) | ||
| 158 | { | ||
| 159 | 2 | float* outputVectorPtr = outputVector; | |
| 160 | 2 | const int8_t* inputVectorPtr = inputVector; | |
| 161 | 2 | unsigned int number = 0; | |
| 162 | 2 | const float iScalar = 1.0 / scalar; | |
| 163 | |||
| 164 |
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262144 | for (number = 0; number < num_points; number++) { |
| 165 | 262142 | *outputVectorPtr++ = ((float)(*inputVectorPtr++)) * iScalar; | |
| 166 | } | ||
| 167 | 2 | } | |
| 168 | #endif /* LV_HAVE_GENERIC */ | ||
| 169 | |||
| 170 | |||
| 171 | #endif /* INCLUDED_VOLK_8s_CONVERT_32f_UNALIGNED8_H */ | ||
| 172 | |||
| 173 | #ifndef INCLUDED_volk_8i_s32f_convert_32f_a_H | ||
| 174 | #define INCLUDED_volk_8i_s32f_convert_32f_a_H | ||
| 175 | |||
| 176 | #include <inttypes.h> | ||
| 177 | #include <stdio.h> | ||
| 178 | |||
| 179 | #ifdef LV_HAVE_AVX2 | ||
| 180 | #include <immintrin.h> | ||
| 181 | |||
| 182 | 2 | static inline void volk_8i_s32f_convert_32f_a_avx2(float* outputVector, | |
| 183 | const int8_t* inputVector, | ||
| 184 | const float scalar, | ||
| 185 | unsigned int num_points) | ||
| 186 | { | ||
| 187 | 2 | unsigned int number = 0; | |
| 188 | 2 | const unsigned int sixteenthPoints = num_points / 16; | |
| 189 | |||
| 190 | 2 | float* outputVectorPtr = outputVector; | |
| 191 | 2 | const float iScalar = 1.0 / scalar; | |
| 192 | 2 | __m256 invScalar = _mm256_set1_ps(iScalar); | |
| 193 | 2 | const int8_t* inputVectorPtr = inputVector; | |
| 194 | __m256 ret; | ||
| 195 | __m128i inputVal128; | ||
| 196 | __m256i interimVal; | ||
| 197 | |||
| 198 |
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16384 | for (; number < sixteenthPoints; number++) { |
| 199 | 16382 | inputVal128 = _mm_load_si128((__m128i*)inputVectorPtr); | |
| 200 | |||
| 201 | 16382 | interimVal = _mm256_cvtepi8_epi32(inputVal128); | |
| 202 | 16382 | ret = _mm256_cvtepi32_ps(interimVal); | |
| 203 | 16382 | ret = _mm256_mul_ps(ret, invScalar); | |
| 204 | _mm256_store_ps(outputVectorPtr, ret); | ||
| 205 | 16382 | outputVectorPtr += 8; | |
| 206 | |||
| 207 | 16382 | inputVal128 = _mm_srli_si128(inputVal128, 8); | |
| 208 | 16382 | interimVal = _mm256_cvtepi8_epi32(inputVal128); | |
| 209 | 16382 | ret = _mm256_cvtepi32_ps(interimVal); | |
| 210 | 16382 | ret = _mm256_mul_ps(ret, invScalar); | |
| 211 | _mm256_store_ps(outputVectorPtr, ret); | ||
| 212 | 16382 | outputVectorPtr += 8; | |
| 213 | |||
| 214 | 16382 | inputVectorPtr += 16; | |
| 215 | } | ||
| 216 | |||
| 217 | 2 | number = sixteenthPoints * 16; | |
| 218 |
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32 | for (; number < num_points; number++) { |
| 219 | 30 | outputVector[number] = (float)(inputVector[number]) * iScalar; | |
| 220 | } | ||
| 221 | 2 | } | |
| 222 | #endif /* LV_HAVE_AVX2 */ | ||
| 223 | |||
| 224 | #ifdef LV_HAVE_SSE4_1 | ||
| 225 | #include <smmintrin.h> | ||
| 226 | |||
| 227 | 2 | static inline void volk_8i_s32f_convert_32f_a_sse4_1(float* outputVector, | |
| 228 | const int8_t* inputVector, | ||
| 229 | const float scalar, | ||
| 230 | unsigned int num_points) | ||
| 231 | { | ||
| 232 | 2 | unsigned int number = 0; | |
| 233 | 2 | const unsigned int sixteenthPoints = num_points / 16; | |
| 234 | |||
| 235 | 2 | float* outputVectorPtr = outputVector; | |
| 236 | 2 | const float iScalar = 1.0 / scalar; | |
| 237 | 2 | __m128 invScalar = _mm_set_ps1(iScalar); | |
| 238 | 2 | const int8_t* inputVectorPtr = inputVector; | |
| 239 | __m128 ret; | ||
| 240 | __m128i inputVal; | ||
| 241 | __m128i interimVal; | ||
| 242 | |||
| 243 |
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16384 | for (; number < sixteenthPoints; number++) { |
| 244 | 16382 | inputVal = _mm_load_si128((__m128i*)inputVectorPtr); | |
| 245 | |||
| 246 | 16382 | interimVal = _mm_cvtepi8_epi32(inputVal); | |
| 247 | 16382 | ret = _mm_cvtepi32_ps(interimVal); | |
| 248 | 16382 | ret = _mm_mul_ps(ret, invScalar); | |
| 249 | _mm_store_ps(outputVectorPtr, ret); | ||
| 250 | 16382 | outputVectorPtr += 4; | |
| 251 | |||
| 252 | 16382 | inputVal = _mm_srli_si128(inputVal, 4); | |
| 253 | 16382 | interimVal = _mm_cvtepi8_epi32(inputVal); | |
| 254 | 16382 | ret = _mm_cvtepi32_ps(interimVal); | |
| 255 | 16382 | ret = _mm_mul_ps(ret, invScalar); | |
| 256 | _mm_store_ps(outputVectorPtr, ret); | ||
| 257 | 16382 | outputVectorPtr += 4; | |
| 258 | |||
| 259 | 16382 | inputVal = _mm_srli_si128(inputVal, 4); | |
| 260 | 16382 | interimVal = _mm_cvtepi8_epi32(inputVal); | |
| 261 | 16382 | ret = _mm_cvtepi32_ps(interimVal); | |
| 262 | 16382 | ret = _mm_mul_ps(ret, invScalar); | |
| 263 | _mm_store_ps(outputVectorPtr, ret); | ||
| 264 | 16382 | outputVectorPtr += 4; | |
| 265 | |||
| 266 | 16382 | inputVal = _mm_srli_si128(inputVal, 4); | |
| 267 | 16382 | interimVal = _mm_cvtepi8_epi32(inputVal); | |
| 268 | 16382 | ret = _mm_cvtepi32_ps(interimVal); | |
| 269 | 16382 | ret = _mm_mul_ps(ret, invScalar); | |
| 270 | _mm_store_ps(outputVectorPtr, ret); | ||
| 271 | 16382 | outputVectorPtr += 4; | |
| 272 | |||
| 273 | 16382 | inputVectorPtr += 16; | |
| 274 | } | ||
| 275 | |||
| 276 | 2 | number = sixteenthPoints * 16; | |
| 277 |
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32 | for (; number < num_points; number++) { |
| 278 | 30 | outputVector[number] = (float)(inputVector[number]) * iScalar; | |
| 279 | } | ||
| 280 | 2 | } | |
| 281 | #endif /* LV_HAVE_SSE4_1 */ | ||
| 282 | |||
| 283 | #ifdef LV_HAVE_NEON | ||
| 284 | #include <arm_neon.h> | ||
| 285 | |||
| 286 | static inline void volk_8i_s32f_convert_32f_neon(float* outputVector, | ||
| 287 | const int8_t* inputVector, | ||
| 288 | const float scalar, | ||
| 289 | unsigned int num_points) | ||
| 290 | { | ||
| 291 | float* outputVectorPtr = outputVector; | ||
| 292 | const int8_t* inputVectorPtr = inputVector; | ||
| 293 | |||
| 294 | const float iScalar = 1.0 / scalar; | ||
| 295 | const float32x4_t qiScalar = vdupq_n_f32(iScalar); | ||
| 296 | |||
| 297 | int8x16_t inputVal; | ||
| 298 | |||
| 299 | int16x8_t lower; | ||
| 300 | int16x8_t higher; | ||
| 301 | |||
| 302 | float32x4_t outputFloat; | ||
| 303 | |||
| 304 | unsigned int number = 0; | ||
| 305 | const unsigned int sixteenthPoints = num_points / 16; | ||
| 306 | for (; number < sixteenthPoints; number++) { | ||
| 307 | inputVal = vld1q_s8(inputVectorPtr); | ||
| 308 | inputVectorPtr += 16; | ||
| 309 | |||
| 310 | lower = vmovl_s8(vget_low_s8(inputVal)); | ||
| 311 | higher = vmovl_s8(vget_high_s8(inputVal)); | ||
| 312 | |||
| 313 | outputFloat = vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_low_s16(lower))), qiScalar); | ||
| 314 | vst1q_f32(outputVectorPtr, outputFloat); | ||
| 315 | outputVectorPtr += 4; | ||
| 316 | |||
| 317 | outputFloat = vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_high_s16(lower))), qiScalar); | ||
| 318 | vst1q_f32(outputVectorPtr, outputFloat); | ||
| 319 | outputVectorPtr += 4; | ||
| 320 | |||
| 321 | outputFloat = vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_low_s16(higher))), qiScalar); | ||
| 322 | vst1q_f32(outputVectorPtr, outputFloat); | ||
| 323 | outputVectorPtr += 4; | ||
| 324 | |||
| 325 | outputFloat = | ||
| 326 | vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_high_s16(higher))), qiScalar); | ||
| 327 | vst1q_f32(outputVectorPtr, outputFloat); | ||
| 328 | outputVectorPtr += 4; | ||
| 329 | } | ||
| 330 | for (number = sixteenthPoints * 16; number < num_points; number++) { | ||
| 331 | *outputVectorPtr++ = ((float)(*inputVectorPtr++)) * iScalar; | ||
| 332 | } | ||
| 333 | } | ||
| 334 | |||
| 335 | #endif /* LV_HAVE_NEON */ | ||
| 336 | |||
| 337 | #ifdef LV_HAVE_GENERIC | ||
| 338 | |||
| 339 | 2 | static inline void volk_8i_s32f_convert_32f_a_generic(float* outputVector, | |
| 340 | const int8_t* inputVector, | ||
| 341 | const float scalar, | ||
| 342 | unsigned int num_points) | ||
| 343 | { | ||
| 344 | 2 | float* outputVectorPtr = outputVector; | |
| 345 | 2 | const int8_t* inputVectorPtr = inputVector; | |
| 346 | 2 | unsigned int number = 0; | |
| 347 | 2 | const float iScalar = 1.0 / scalar; | |
| 348 | |||
| 349 |
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262144 | for (number = 0; number < num_points; number++) { |
| 350 | 262142 | *outputVectorPtr++ = ((float)(*inputVectorPtr++)) * iScalar; | |
| 351 | } | ||
| 352 | 2 | } | |
| 353 | #endif /* LV_HAVE_GENERIC */ | ||
| 354 | |||
| 355 | |||
| 356 | #ifdef LV_HAVE_ORC | ||
| 357 | extern void volk_8i_s32f_convert_32f_a_orc_impl(float* outputVector, | ||
| 358 | const int8_t* inputVector, | ||
| 359 | const float scalar, | ||
| 360 | unsigned int num_points); | ||
| 361 | |||
| 362 | 2 | static inline void volk_8i_s32f_convert_32f_u_orc(float* outputVector, | |
| 363 | const int8_t* inputVector, | ||
| 364 | const float scalar, | ||
| 365 | unsigned int num_points) | ||
| 366 | { | ||
| 367 | 2 | float invscalar = 1.0 / scalar; | |
| 368 | 2 | volk_8i_s32f_convert_32f_a_orc_impl(outputVector, inputVector, invscalar, num_points); | |
| 369 | 2 | } | |
| 370 | #endif /* LV_HAVE_ORC */ | ||
| 371 | |||
| 372 | |||
| 373 | #endif /* INCLUDED_VOLK_8s_CONVERT_32f_ALIGNED8_H */ | ||
| 374 |