Vector Optimized Library of Kernels  2.4
Architecture-tuned implementations of math kernels
volk_32f_x2_divide_32f.h
Go to the documentation of this file.
1 /* -*- c++ -*- */
2 /*
3  * Copyright 2012, 2014 Free Software Foundation, Inc.
4  *
5  * This file is part of GNU Radio
6  *
7  * GNU Radio is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 3, or (at your option)
10  * any later version.
11  *
12  * GNU Radio is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with GNU Radio; see the file COPYING. If not, write to
19  * the Free Software Foundation, Inc., 51 Franklin Street,
20  * Boston, MA 02110-1301, USA.
21  */
22 
71 #ifndef INCLUDED_volk_32f_x2_divide_32f_a_H
72 #define INCLUDED_volk_32f_x2_divide_32f_a_H
73 
74 #include <inttypes.h>
75 #include <stdio.h>
76 
77 #ifdef LV_HAVE_AVX512F
78 #include <immintrin.h>
79 
80 static inline void volk_32f_x2_divide_32f_a_avx512f(float* cVector,
81  const float* aVector,
82  const float* bVector,
83  unsigned int num_points)
84 {
85  unsigned int number = 0;
86  const unsigned int sixteenthPoints = num_points / 16;
87 
88  float* cPtr = cVector;
89  const float* aPtr = aVector;
90  const float* bPtr = bVector;
91 
92  __m512 aVal, bVal, cVal;
93  for (; number < sixteenthPoints; number++) {
94  aVal = _mm512_load_ps(aPtr);
95  bVal = _mm512_load_ps(bPtr);
96 
97  cVal = _mm512_div_ps(aVal, bVal);
98 
99  _mm512_store_ps(cPtr, cVal); // Store the results back into the C container
100 
101  aPtr += 16;
102  bPtr += 16;
103  cPtr += 16;
104  }
105 
106  number = sixteenthPoints * 16;
107  for (; number < num_points; number++) {
108  *cPtr++ = (*aPtr++) / (*bPtr++);
109  }
110 }
111 #endif /* LV_HAVE_AVX512F */
112 
113 
114 #ifdef LV_HAVE_AVX
115 #include <immintrin.h>
116 
117 static inline void volk_32f_x2_divide_32f_a_avx(float* cVector,
118  const float* aVector,
119  const float* bVector,
120  unsigned int num_points)
121 {
122  unsigned int number = 0;
123  const unsigned int eighthPoints = num_points / 8;
124 
125  float* cPtr = cVector;
126  const float* aPtr = aVector;
127  const float* bPtr = bVector;
128 
129  __m256 aVal, bVal, cVal;
130  for (; number < eighthPoints; number++) {
131  aVal = _mm256_load_ps(aPtr);
132  bVal = _mm256_load_ps(bPtr);
133 
134  cVal = _mm256_div_ps(aVal, bVal);
135 
136  _mm256_store_ps(cPtr, cVal); // Store the results back into the C container
137 
138  aPtr += 8;
139  bPtr += 8;
140  cPtr += 8;
141  }
142 
143  number = eighthPoints * 8;
144  for (; number < num_points; number++) {
145  *cPtr++ = (*aPtr++) / (*bPtr++);
146  }
147 }
148 #endif /* LV_HAVE_AVX */
149 
150 
151 #ifdef LV_HAVE_SSE
152 #include <xmmintrin.h>
153 
154 static inline void volk_32f_x2_divide_32f_a_sse(float* cVector,
155  const float* aVector,
156  const float* bVector,
157  unsigned int num_points)
158 {
159  unsigned int number = 0;
160  const unsigned int quarterPoints = num_points / 4;
161 
162  float* cPtr = cVector;
163  const float* aPtr = aVector;
164  const float* bPtr = bVector;
165 
166  __m128 aVal, bVal, cVal;
167  for (; number < quarterPoints; number++) {
168  aVal = _mm_load_ps(aPtr);
169  bVal = _mm_load_ps(bPtr);
170 
171  cVal = _mm_div_ps(aVal, bVal);
172 
173  _mm_store_ps(cPtr, cVal); // Store the results back into the C container
174 
175  aPtr += 4;
176  bPtr += 4;
177  cPtr += 4;
178  }
179 
180  number = quarterPoints * 4;
181  for (; number < num_points; number++) {
182  *cPtr++ = (*aPtr++) / (*bPtr++);
183  }
184 }
185 #endif /* LV_HAVE_SSE */
186 
187 
188 #ifdef LV_HAVE_NEON
189 #include <arm_neon.h>
190 
191 static inline void volk_32f_x2_divide_32f_neon(float* cVector,
192  const float* aVector,
193  const float* bVector,
194  unsigned int num_points)
195 {
196  float* cPtr = cVector;
197  const float* aPtr = aVector;
198  const float* bPtr = bVector;
199 
200  float32x4x4_t aVal, bVal, bInv, cVal;
201 
202  const unsigned int eighthPoints = num_points / 16;
203  unsigned int number = 0;
204  for (; number < eighthPoints; number++) {
205  aVal = vld4q_f32(aPtr);
206  aPtr += 16;
207  bVal = vld4q_f32(bPtr);
208  bPtr += 16;
209 
210  __VOLK_PREFETCH(aPtr + 16);
211  __VOLK_PREFETCH(bPtr + 16);
212 
213  bInv.val[0] = vrecpeq_f32(bVal.val[0]);
214  bInv.val[0] = vmulq_f32(bInv.val[0], vrecpsq_f32(bInv.val[0], bVal.val[0]));
215  bInv.val[0] = vmulq_f32(bInv.val[0], vrecpsq_f32(bInv.val[0], bVal.val[0]));
216  cVal.val[0] = vmulq_f32(aVal.val[0], bInv.val[0]);
217 
218  bInv.val[1] = vrecpeq_f32(bVal.val[1]);
219  bInv.val[1] = vmulq_f32(bInv.val[1], vrecpsq_f32(bInv.val[1], bVal.val[1]));
220  bInv.val[1] = vmulq_f32(bInv.val[1], vrecpsq_f32(bInv.val[1], bVal.val[1]));
221  cVal.val[1] = vmulq_f32(aVal.val[1], bInv.val[1]);
222 
223  bInv.val[2] = vrecpeq_f32(bVal.val[2]);
224  bInv.val[2] = vmulq_f32(bInv.val[2], vrecpsq_f32(bInv.val[2], bVal.val[2]));
225  bInv.val[2] = vmulq_f32(bInv.val[2], vrecpsq_f32(bInv.val[2], bVal.val[2]));
226  cVal.val[2] = vmulq_f32(aVal.val[2], bInv.val[2]);
227 
228  bInv.val[3] = vrecpeq_f32(bVal.val[3]);
229  bInv.val[3] = vmulq_f32(bInv.val[3], vrecpsq_f32(bInv.val[3], bVal.val[3]));
230  bInv.val[3] = vmulq_f32(bInv.val[3], vrecpsq_f32(bInv.val[3], bVal.val[3]));
231  cVal.val[3] = vmulq_f32(aVal.val[3], bInv.val[3]);
232 
233  vst4q_f32(cPtr, cVal);
234  cPtr += 16;
235  }
236 
237  for (number = eighthPoints * 16; number < num_points; number++) {
238  *cPtr++ = (*aPtr++) / (*bPtr++);
239  }
240 }
241 
242 #endif /* LV_HAVE_NEON */
243 
244 
245 #ifdef LV_HAVE_GENERIC
246 
247 static inline void volk_32f_x2_divide_32f_generic(float* cVector,
248  const float* aVector,
249  const float* bVector,
250  unsigned int num_points)
251 {
252  float* cPtr = cVector;
253  const float* aPtr = aVector;
254  const float* bPtr = bVector;
255  unsigned int number = 0;
256 
257  for (number = 0; number < num_points; number++) {
258  *cPtr++ = (*aPtr++) / (*bPtr++);
259  }
260 }
261 #endif /* LV_HAVE_GENERIC */
262 
263 
264 #ifdef LV_HAVE_ORC
265 
266 extern void volk_32f_x2_divide_32f_a_orc_impl(float* cVector,
267  const float* aVector,
268  const float* bVector,
269  unsigned int num_points);
270 
271 static inline void volk_32f_x2_divide_32f_u_orc(float* cVector,
272  const float* aVector,
273  const float* bVector,
274  unsigned int num_points)
275 {
276  volk_32f_x2_divide_32f_a_orc_impl(cVector, aVector, bVector, num_points);
277 }
278 #endif /* LV_HAVE_ORC */
279 
280 
281 #endif /* INCLUDED_volk_32f_x2_divide_32f_a_H */
282 
283 
284 #ifndef INCLUDED_volk_32f_x2_divide_32f_u_H
285 #define INCLUDED_volk_32f_x2_divide_32f_u_H
286 
287 #include <inttypes.h>
288 #include <stdio.h>
289 
290 #ifdef LV_HAVE_AVX512F
291 #include <immintrin.h>
292 
293 static inline void volk_32f_x2_divide_32f_u_avx512f(float* cVector,
294  const float* aVector,
295  const float* bVector,
296  unsigned int num_points)
297 {
298  unsigned int number = 0;
299  const unsigned int sixteenthPoints = num_points / 16;
300 
301  float* cPtr = cVector;
302  const float* aPtr = aVector;
303  const float* bPtr = bVector;
304 
305  __m512 aVal, bVal, cVal;
306  for (; number < sixteenthPoints; number++) {
307  aVal = _mm512_loadu_ps(aPtr);
308  bVal = _mm512_loadu_ps(bPtr);
309 
310  cVal = _mm512_div_ps(aVal, bVal);
311 
312  _mm512_storeu_ps(cPtr, cVal); // Store the results back into the C container
313 
314  aPtr += 16;
315  bPtr += 16;
316  cPtr += 16;
317  }
318 
319  number = sixteenthPoints * 16;
320  for (; number < num_points; number++) {
321  *cPtr++ = (*aPtr++) / (*bPtr++);
322  }
323 }
324 #endif /* LV_HAVE_AVX512F */
325 
326 
327 #ifdef LV_HAVE_AVX
328 #include <immintrin.h>
329 
330 static inline void volk_32f_x2_divide_32f_u_avx(float* cVector,
331  const float* aVector,
332  const float* bVector,
333  unsigned int num_points)
334 {
335  unsigned int number = 0;
336  const unsigned int eighthPoints = num_points / 8;
337 
338  float* cPtr = cVector;
339  const float* aPtr = aVector;
340  const float* bPtr = bVector;
341 
342  __m256 aVal, bVal, cVal;
343  for (; number < eighthPoints; number++) {
344  aVal = _mm256_loadu_ps(aPtr);
345  bVal = _mm256_loadu_ps(bPtr);
346 
347  cVal = _mm256_div_ps(aVal, bVal);
348 
349  _mm256_storeu_ps(cPtr, cVal); // Store the results back into the C container
350 
351  aPtr += 8;
352  bPtr += 8;
353  cPtr += 8;
354  }
355 
356  number = eighthPoints * 8;
357  for (; number < num_points; number++) {
358  *cPtr++ = (*aPtr++) / (*bPtr++);
359  }
360 }
361 #endif /* LV_HAVE_AVX */
362 
363 #endif /* INCLUDED_volk_32f_x2_divide_32f_u_H */
volk_32f_x2_divide_32f_neon
static void volk_32f_x2_divide_32f_neon(float *cVector, const float *aVector, const float *bVector, unsigned int num_points)
Definition: volk_32f_x2_divide_32f.h:191
volk_32f_x2_divide_32f_a_avx
static void volk_32f_x2_divide_32f_a_avx(float *cVector, const float *aVector, const float *bVector, unsigned int num_points)
Definition: volk_32f_x2_divide_32f.h:117
__VOLK_PREFETCH
#define __VOLK_PREFETCH(addr)
Definition: volk_common.h:62
volk_32f_x2_divide_32f_generic
static void volk_32f_x2_divide_32f_generic(float *cVector, const float *aVector, const float *bVector, unsigned int num_points)
Definition: volk_32f_x2_divide_32f.h:247
volk_32f_x2_divide_32f_a_sse
static void volk_32f_x2_divide_32f_a_sse(float *cVector, const float *aVector, const float *bVector, unsigned int num_points)
Definition: volk_32f_x2_divide_32f.h:154
volk_32f_x2_divide_32f_u_avx
static void volk_32f_x2_divide_32f_u_avx(float *cVector, const float *aVector, const float *bVector, unsigned int num_points)
Definition: volk_32f_x2_divide_32f.h:330