| 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_32f_s32f_convert_32i | ||
| 12 | * | ||
| 13 | * \b Overview | ||
| 14 | * | ||
| 15 | * Converts a floating point number to a 32-bit integer after applying a | ||
| 16 | * scaling factor. | ||
| 17 | * | ||
| 18 | * <b>Dispatcher Prototype</b> | ||
| 19 | * \code | ||
| 20 | * void volk_32f_s32f_convert_32i(int32_t* outputVector, const float* inputVector, const | ||
| 21 | * float scalar, unsigned int num_points) \endcode | ||
| 22 | * | ||
| 23 | * \b Inputs | ||
| 24 | * \li inputVector: the input vector of floats. | ||
| 25 | * \li scalar: The value multiplied against each point in the input buffer. | ||
| 26 | * \li num_points: The number of data points. | ||
| 27 | * | ||
| 28 | * \b Outputs | ||
| 29 | * \li outputVector: The output vector. | ||
| 30 | * | ||
| 31 | * \b Example | ||
| 32 | * Convert floats from [-1,1] to integers with a scale of 5 to maintain smallest delta | ||
| 33 | * \code | ||
| 34 | * int N = 10; | ||
| 35 | * unsigned int alignment = volk_get_alignment(); | ||
| 36 | * float* increasing = (float*)volk_malloc(sizeof(float)*N, alignment); | ||
| 37 | * int32_t* out = (int32_t*)volk_malloc(sizeof(int32_t)*N, alignment); | ||
| 38 | * | ||
| 39 | * for(unsigned int ii = 0; ii < N; ++ii){ | ||
| 40 | * increasing[ii] = 2.f * ((float)ii / (float)N) - 1.f; | ||
| 41 | * } | ||
| 42 | * | ||
| 43 | * // Normalize by the smallest delta (0.2 in this example) | ||
| 44 | * float scale = 5.f; | ||
| 45 | * | ||
| 46 | * volk_32f_s32f_convert_32i(out, increasing, scale, N); | ||
| 47 | * | ||
| 48 | * for(unsigned int ii = 0; ii < N; ++ii){ | ||
| 49 | * printf("out[%u] = %i\n", ii, out[ii]); | ||
| 50 | * } | ||
| 51 | * | ||
| 52 | * volk_free(increasing); | ||
| 53 | * volk_free(out); | ||
| 54 | * \endcode | ||
| 55 | */ | ||
| 56 | |||
| 57 | #ifndef INCLUDED_volk_32f_s32f_convert_32i_u_H | ||
| 58 | #define INCLUDED_volk_32f_s32f_convert_32i_u_H | ||
| 59 | |||
| 60 | #include <inttypes.h> | ||
| 61 | #include <limits.h> | ||
| 62 | #include <stdio.h> | ||
| 63 | |||
| 64 | #ifdef LV_HAVE_AVX | ||
| 65 | #include <immintrin.h> | ||
| 66 | |||
| 67 | 2 | static inline void volk_32f_s32f_convert_32i_u_avx(int32_t* outputVector, | |
| 68 | const float* inputVector, | ||
| 69 | const float scalar, | ||
| 70 | unsigned int num_points) | ||
| 71 | { | ||
| 72 | 2 | unsigned int number = 0; | |
| 73 | |||
| 74 | 2 | const unsigned int eighthPoints = num_points / 8; | |
| 75 | |||
| 76 | 2 | const float* inputVectorPtr = (const float*)inputVector; | |
| 77 | 2 | int32_t* outputVectorPtr = outputVector; | |
| 78 | |||
| 79 | 2 | float min_val = INT_MIN; | |
| 80 | 2 | float max_val = (uint32_t)INT_MAX + 1; | |
| 81 | float r; | ||
| 82 | |||
| 83 | 2 | __m256 vScalar = _mm256_set1_ps(scalar); | |
| 84 | __m256 inputVal1; | ||
| 85 | __m256i intInputVal1; | ||
| 86 | 2 | __m256 vmin_val = _mm256_set1_ps(min_val); | |
| 87 | 2 | __m256 vmax_val = _mm256_set1_ps(max_val); | |
| 88 | |||
| 89 |
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32768 | for (; number < eighthPoints; number++) { |
| 90 | 32766 | inputVal1 = _mm256_loadu_ps(inputVectorPtr); | |
| 91 | 32766 | inputVectorPtr += 8; | |
| 92 | |||
| 93 | 98298 | inputVal1 = _mm256_max_ps( | |
| 94 | _mm256_min_ps(_mm256_mul_ps(inputVal1, vScalar), vmax_val), vmin_val); | ||
| 95 | 32766 | intInputVal1 = _mm256_cvtps_epi32(inputVal1); | |
| 96 | |||
| 97 | _mm256_storeu_si256((__m256i*)outputVectorPtr, intInputVal1); | ||
| 98 | 32766 | outputVectorPtr += 8; | |
| 99 | } | ||
| 100 | |||
| 101 | 2 | number = eighthPoints * 8; | |
| 102 |
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16 | for (; number < num_points; number++) { |
| 103 | 14 | r = inputVector[number] * scalar; | |
| 104 |
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14 | if (r > max_val) |
| 105 | ✗ | r = max_val; | |
| 106 |
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14 | else if (r < min_val) |
| 107 | ✗ | r = min_val; | |
| 108 | 14 | outputVector[number] = (int32_t)rintf(r); | |
| 109 | } | ||
| 110 | 2 | } | |
| 111 | |||
| 112 | #endif /* LV_HAVE_AVX */ | ||
| 113 | |||
| 114 | #ifdef LV_HAVE_SSE2 | ||
| 115 | #include <emmintrin.h> | ||
| 116 | |||
| 117 | 2 | static inline void volk_32f_s32f_convert_32i_u_sse2(int32_t* outputVector, | |
| 118 | const float* inputVector, | ||
| 119 | const float scalar, | ||
| 120 | unsigned int num_points) | ||
| 121 | { | ||
| 122 | 2 | unsigned int number = 0; | |
| 123 | |||
| 124 | 2 | const unsigned int quarterPoints = num_points / 4; | |
| 125 | |||
| 126 | 2 | const float* inputVectorPtr = (const float*)inputVector; | |
| 127 | 2 | int32_t* outputVectorPtr = outputVector; | |
| 128 | |||
| 129 | 2 | float min_val = INT_MIN; | |
| 130 | 2 | float max_val = (uint32_t)INT_MAX + 1; | |
| 131 | float r; | ||
| 132 | |||
| 133 | 2 | __m128 vScalar = _mm_set_ps1(scalar); | |
| 134 | __m128 inputVal1; | ||
| 135 | __m128i intInputVal1; | ||
| 136 | 2 | __m128 vmin_val = _mm_set_ps1(min_val); | |
| 137 | 2 | __m128 vmax_val = _mm_set_ps1(max_val); | |
| 138 | |||
| 139 |
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65536 | for (; number < quarterPoints; number++) { |
| 140 | 65534 | inputVal1 = _mm_loadu_ps(inputVectorPtr); | |
| 141 | 65534 | inputVectorPtr += 4; | |
| 142 | |||
| 143 | inputVal1 = | ||
| 144 | 196602 | _mm_max_ps(_mm_min_ps(_mm_mul_ps(inputVal1, vScalar), vmax_val), vmin_val); | |
| 145 | 65534 | intInputVal1 = _mm_cvtps_epi32(inputVal1); | |
| 146 | |||
| 147 | _mm_storeu_si128((__m128i*)outputVectorPtr, intInputVal1); | ||
| 148 | 65534 | outputVectorPtr += 4; | |
| 149 | } | ||
| 150 | |||
| 151 | 2 | number = quarterPoints * 4; | |
| 152 |
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8 | for (; number < num_points; number++) { |
| 153 | 6 | r = inputVector[number] * scalar; | |
| 154 |
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6 | if (r > max_val) |
| 155 | ✗ | r = max_val; | |
| 156 |
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6 | else if (r < min_val) |
| 157 | ✗ | r = min_val; | |
| 158 | 6 | outputVector[number] = (int32_t)rintf(r); | |
| 159 | } | ||
| 160 | 2 | } | |
| 161 | |||
| 162 | #endif /* LV_HAVE_SSE2 */ | ||
| 163 | |||
| 164 | |||
| 165 | #ifdef LV_HAVE_SSE | ||
| 166 | #include <xmmintrin.h> | ||
| 167 | |||
| 168 | 2 | static inline void volk_32f_s32f_convert_32i_u_sse(int32_t* outputVector, | |
| 169 | const float* inputVector, | ||
| 170 | const float scalar, | ||
| 171 | unsigned int num_points) | ||
| 172 | { | ||
| 173 | 2 | unsigned int number = 0; | |
| 174 | |||
| 175 | 2 | const unsigned int quarterPoints = num_points / 4; | |
| 176 | |||
| 177 | 2 | const float* inputVectorPtr = (const float*)inputVector; | |
| 178 | 2 | int32_t* outputVectorPtr = outputVector; | |
| 179 | |||
| 180 | 2 | float min_val = INT_MIN; | |
| 181 | 2 | float max_val = (uint32_t)INT_MAX + 1; | |
| 182 | float r; | ||
| 183 | |||
| 184 | 2 | __m128 vScalar = _mm_set_ps1(scalar); | |
| 185 | __m128 ret; | ||
| 186 | 2 | __m128 vmin_val = _mm_set_ps1(min_val); | |
| 187 | 2 | __m128 vmax_val = _mm_set_ps1(max_val); | |
| 188 | |||
| 189 | __VOLK_ATTR_ALIGNED(16) float outputFloatBuffer[4]; | ||
| 190 | |||
| 191 |
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65536 | for (; number < quarterPoints; number++) { |
| 192 | 65534 | ret = _mm_loadu_ps(inputVectorPtr); | |
| 193 | 65534 | inputVectorPtr += 4; | |
| 194 | |||
| 195 | 196602 | ret = _mm_max_ps(_mm_min_ps(_mm_mul_ps(ret, vScalar), vmax_val), vmin_val); | |
| 196 | |||
| 197 | _mm_store_ps(outputFloatBuffer, ret); | ||
| 198 | 65534 | *outputVectorPtr++ = (int32_t)rintf(outputFloatBuffer[0]); | |
| 199 | 65534 | *outputVectorPtr++ = (int32_t)rintf(outputFloatBuffer[1]); | |
| 200 | 65534 | *outputVectorPtr++ = (int32_t)rintf(outputFloatBuffer[2]); | |
| 201 | 65534 | *outputVectorPtr++ = (int32_t)rintf(outputFloatBuffer[3]); | |
| 202 | } | ||
| 203 | |||
| 204 | 2 | number = quarterPoints * 4; | |
| 205 |
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8 | for (; number < num_points; number++) { |
| 206 | 6 | r = inputVector[number] * scalar; | |
| 207 |
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6 | if (r > max_val) |
| 208 | ✗ | r = max_val; | |
| 209 |
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6 | else if (r < min_val) |
| 210 | ✗ | r = min_val; | |
| 211 | 6 | outputVector[number] = (int32_t)rintf(r); | |
| 212 | } | ||
| 213 | 2 | } | |
| 214 | |||
| 215 | #endif /* LV_HAVE_SSE */ | ||
| 216 | |||
| 217 | |||
| 218 | #ifdef LV_HAVE_GENERIC | ||
| 219 | |||
| 220 | 4 | static inline void volk_32f_s32f_convert_32i_generic(int32_t* outputVector, | |
| 221 | const float* inputVector, | ||
| 222 | const float scalar, | ||
| 223 | unsigned int num_points) | ||
| 224 | { | ||
| 225 | 4 | int32_t* outputVectorPtr = outputVector; | |
| 226 | 4 | const float* inputVectorPtr = inputVector; | |
| 227 | 4 | const float min_val = (float)INT_MIN; | |
| 228 | 4 | const float max_val = (float)((uint32_t)INT_MAX + 1); | |
| 229 | |||
| 230 |
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524288 | for (unsigned int number = 0; number < num_points; number++) { |
| 231 | 524284 | const float r = *inputVectorPtr++ * scalar; | |
| 232 | int s; | ||
| 233 |
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524284 | if (r >= max_val) |
| 234 | ✗ | s = INT_MAX; | |
| 235 |
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524284 | else if (r < min_val) |
| 236 | ✗ | s = INT_MIN; | |
| 237 | else | ||
| 238 | 524284 | s = (int32_t)rintf(r); | |
| 239 | 524284 | *outputVectorPtr++ = s; | |
| 240 | } | ||
| 241 | 4 | } | |
| 242 | |||
| 243 | #endif /* LV_HAVE_GENERIC */ | ||
| 244 | |||
| 245 | |||
| 246 | #endif /* INCLUDED_volk_32f_s32f_convert_32i_u_H */ | ||
| 247 | #ifndef INCLUDED_volk_32f_s32f_convert_32i_a_H | ||
| 248 | #define INCLUDED_volk_32f_s32f_convert_32i_a_H | ||
| 249 | |||
| 250 | #include <inttypes.h> | ||
| 251 | #include <stdio.h> | ||
| 252 | #include <volk/volk_common.h> | ||
| 253 | |||
| 254 | #ifdef LV_HAVE_AVX | ||
| 255 | #include <immintrin.h> | ||
| 256 | |||
| 257 | 2 | static inline void volk_32f_s32f_convert_32i_a_avx(int32_t* outputVector, | |
| 258 | const float* inputVector, | ||
| 259 | const float scalar, | ||
| 260 | unsigned int num_points) | ||
| 261 | { | ||
| 262 | 2 | unsigned int number = 0; | |
| 263 | |||
| 264 | 2 | const unsigned int eighthPoints = num_points / 8; | |
| 265 | |||
| 266 | 2 | const float* inputVectorPtr = (const float*)inputVector; | |
| 267 | 2 | int32_t* outputVectorPtr = outputVector; | |
| 268 | |||
| 269 | 2 | float min_val = INT_MIN; | |
| 270 | 2 | float max_val = (uint32_t)INT_MAX + 1; | |
| 271 | float r; | ||
| 272 | |||
| 273 | 2 | __m256 vScalar = _mm256_set1_ps(scalar); | |
| 274 | __m256 inputVal1; | ||
| 275 | __m256i intInputVal1; | ||
| 276 | 2 | __m256 vmin_val = _mm256_set1_ps(min_val); | |
| 277 | 2 | __m256 vmax_val = _mm256_set1_ps(max_val); | |
| 278 | |||
| 279 |
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32768 | for (; number < eighthPoints; number++) { |
| 280 | 32766 | inputVal1 = _mm256_load_ps(inputVectorPtr); | |
| 281 | 32766 | inputVectorPtr += 8; | |
| 282 | |||
| 283 | 98298 | inputVal1 = _mm256_max_ps( | |
| 284 | _mm256_min_ps(_mm256_mul_ps(inputVal1, vScalar), vmax_val), vmin_val); | ||
| 285 | 32766 | intInputVal1 = _mm256_cvtps_epi32(inputVal1); | |
| 286 | |||
| 287 | _mm256_store_si256((__m256i*)outputVectorPtr, intInputVal1); | ||
| 288 | 32766 | outputVectorPtr += 8; | |
| 289 | } | ||
| 290 | |||
| 291 | 2 | number = eighthPoints * 8; | |
| 292 |
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16 | for (; number < num_points; number++) { |
| 293 | 14 | r = inputVector[number] * scalar; | |
| 294 |
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14 | if (r > max_val) |
| 295 | ✗ | r = max_val; | |
| 296 |
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14 | else if (r < min_val) |
| 297 | ✗ | r = min_val; | |
| 298 | 14 | outputVector[number] = (int32_t)rintf(r); | |
| 299 | } | ||
| 300 | 2 | } | |
| 301 | |||
| 302 | #endif /* LV_HAVE_AVX */ | ||
| 303 | |||
| 304 | |||
| 305 | #ifdef LV_HAVE_SSE2 | ||
| 306 | #include <emmintrin.h> | ||
| 307 | |||
| 308 | 2 | static inline void volk_32f_s32f_convert_32i_a_sse2(int32_t* outputVector, | |
| 309 | const float* inputVector, | ||
| 310 | const float scalar, | ||
| 311 | unsigned int num_points) | ||
| 312 | { | ||
| 313 | 2 | unsigned int number = 0; | |
| 314 | |||
| 315 | 2 | const unsigned int quarterPoints = num_points / 4; | |
| 316 | |||
| 317 | 2 | const float* inputVectorPtr = (const float*)inputVector; | |
| 318 | 2 | int32_t* outputVectorPtr = outputVector; | |
| 319 | |||
| 320 | 2 | float min_val = INT_MIN; | |
| 321 | 2 | float max_val = (uint32_t)INT_MAX + 1; | |
| 322 | float r; | ||
| 323 | |||
| 324 | 2 | __m128 vScalar = _mm_set_ps1(scalar); | |
| 325 | __m128 inputVal1; | ||
| 326 | __m128i intInputVal1; | ||
| 327 | 2 | __m128 vmin_val = _mm_set_ps1(min_val); | |
| 328 | 2 | __m128 vmax_val = _mm_set_ps1(max_val); | |
| 329 | |||
| 330 |
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65536 | for (; number < quarterPoints; number++) { |
| 331 | 65534 | inputVal1 = _mm_load_ps(inputVectorPtr); | |
| 332 | 65534 | inputVectorPtr += 4; | |
| 333 | |||
| 334 | inputVal1 = | ||
| 335 | 196602 | _mm_max_ps(_mm_min_ps(_mm_mul_ps(inputVal1, vScalar), vmax_val), vmin_val); | |
| 336 | 65534 | intInputVal1 = _mm_cvtps_epi32(inputVal1); | |
| 337 | |||
| 338 | _mm_store_si128((__m128i*)outputVectorPtr, intInputVal1); | ||
| 339 | 65534 | outputVectorPtr += 4; | |
| 340 | } | ||
| 341 | |||
| 342 | 2 | number = quarterPoints * 4; | |
| 343 |
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8 | for (; number < num_points; number++) { |
| 344 | 6 | r = inputVector[number] * scalar; | |
| 345 |
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6 | if (r > max_val) |
| 346 | ✗ | r = max_val; | |
| 347 |
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6 | else if (r < min_val) |
| 348 | ✗ | r = min_val; | |
| 349 | 6 | outputVector[number] = (int32_t)rintf(r); | |
| 350 | } | ||
| 351 | 2 | } | |
| 352 | |||
| 353 | #endif /* LV_HAVE_SSE2 */ | ||
| 354 | |||
| 355 | |||
| 356 | #ifdef LV_HAVE_SSE | ||
| 357 | #include <xmmintrin.h> | ||
| 358 | |||
| 359 | 2 | static inline void volk_32f_s32f_convert_32i_a_sse(int32_t* outputVector, | |
| 360 | const float* inputVector, | ||
| 361 | const float scalar, | ||
| 362 | unsigned int num_points) | ||
| 363 | { | ||
| 364 | 2 | unsigned int number = 0; | |
| 365 | |||
| 366 | 2 | const unsigned int quarterPoints = num_points / 4; | |
| 367 | |||
| 368 | 2 | const float* inputVectorPtr = (const float*)inputVector; | |
| 369 | 2 | int32_t* outputVectorPtr = outputVector; | |
| 370 | |||
| 371 | 2 | float min_val = INT_MIN; | |
| 372 | 2 | float max_val = (uint32_t)INT_MAX + 1; | |
| 373 | float r; | ||
| 374 | |||
| 375 | 2 | __m128 vScalar = _mm_set_ps1(scalar); | |
| 376 | __m128 ret; | ||
| 377 | 2 | __m128 vmin_val = _mm_set_ps1(min_val); | |
| 378 | 2 | __m128 vmax_val = _mm_set_ps1(max_val); | |
| 379 | |||
| 380 | __VOLK_ATTR_ALIGNED(16) float outputFloatBuffer[4]; | ||
| 381 | |||
| 382 |
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65536 | for (; number < quarterPoints; number++) { |
| 383 | 65534 | ret = _mm_load_ps(inputVectorPtr); | |
| 384 | 65534 | inputVectorPtr += 4; | |
| 385 | |||
| 386 | 196602 | ret = _mm_max_ps(_mm_min_ps(_mm_mul_ps(ret, vScalar), vmax_val), vmin_val); | |
| 387 | |||
| 388 | _mm_store_ps(outputFloatBuffer, ret); | ||
| 389 | 65534 | *outputVectorPtr++ = (int32_t)rintf(outputFloatBuffer[0]); | |
| 390 | 65534 | *outputVectorPtr++ = (int32_t)rintf(outputFloatBuffer[1]); | |
| 391 | 65534 | *outputVectorPtr++ = (int32_t)rintf(outputFloatBuffer[2]); | |
| 392 | 65534 | *outputVectorPtr++ = (int32_t)rintf(outputFloatBuffer[3]); | |
| 393 | } | ||
| 394 | |||
| 395 | 2 | number = quarterPoints * 4; | |
| 396 |
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8 | for (; number < num_points; number++) { |
| 397 | 6 | r = inputVector[number] * scalar; | |
| 398 |
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6 | if (r > max_val) |
| 399 | ✗ | r = max_val; | |
| 400 |
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6 | else if (r < min_val) |
| 401 | ✗ | r = min_val; | |
| 402 | 6 | outputVector[number] = (int32_t)rintf(r); | |
| 403 | } | ||
| 404 | 2 | } | |
| 405 | |||
| 406 | #endif /* LV_HAVE_SSE */ | ||
| 407 | |||
| 408 | |||
| 409 | #ifdef LV_HAVE_GENERIC | ||
| 410 | |||
| 411 | 2 | static inline void volk_32f_s32f_convert_32i_a_generic(int32_t* outputVector, | |
| 412 | const float* inputVector, | ||
| 413 | const float scalar, | ||
| 414 | unsigned int num_points) | ||
| 415 | { | ||
| 416 | 2 | volk_32f_s32f_convert_32i_generic(outputVector, inputVector, scalar, num_points); | |
| 417 | 2 | } | |
| 418 | |||
| 419 | #endif /* LV_HAVE_GENERIC */ | ||
| 420 | |||
| 421 | #endif /* INCLUDED_volk_32f_s32f_convert_32i_a_H */ | ||
| 422 |