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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_32fc_s32fc_multiply_32fc | ||
12 | * | ||
13 | * \b Overview | ||
14 | * | ||
15 | * Multiplies the input complex vector by a complex scalar and returns | ||
16 | * the results. | ||
17 | * | ||
18 | * <b>Dispatcher Prototype</b> | ||
19 | * \code | ||
20 | * void volk_32fc_s32fc_multiply_32fc(lv_32fc_t* cVector, const lv_32fc_t* aVector, const | ||
21 | * lv_32fc_t scalar, unsigned int num_points); \endcode | ||
22 | * | ||
23 | * \b Inputs | ||
24 | * \li aVector: The input vector to be multiplied. | ||
25 | * \li scalar The complex scalar to multiply against aVector. | ||
26 | * \li num_points: The number of complex values in aVector. | ||
27 | * | ||
28 | * \b Outputs | ||
29 | * \li cVector: The vector where the results will be stored. | ||
30 | * | ||
31 | * \b Example | ||
32 | * Generate points around the unit circle and shift the phase pi/3 rad. | ||
33 | * \code | ||
34 | * int N = 10; | ||
35 | * unsigned int alignment = volk_get_alignment(); | ||
36 | * lv_32fc_t* in = (lv_32fc_t*)volk_malloc(sizeof(lv_32fc_t)*N, alignment); | ||
37 | * lv_32fc_t* out = (lv_32fc_t*)volk_malloc(sizeof(lv_32fc_t)*N, alignment); | ||
38 | * lv_32fc_t scalar = lv_cmake((float)std::cos(M_PI/3.f), (float)std::sin(M_PI/3.f)); | ||
39 | * | ||
40 | * float delta = 2.f*M_PI / (float)N; | ||
41 | * for(unsigned int ii = 0; ii < N/2; ++ii){ | ||
42 | * // Generate points around the unit circle | ||
43 | * float real = std::cos(delta * (float)ii); | ||
44 | * float imag = std::sin(delta * (float)ii); | ||
45 | * in[ii] = lv_cmake(real, imag); | ||
46 | * in[ii+N/2] = lv_cmake(-real, -imag); | ||
47 | * } | ||
48 | * | ||
49 | * volk_32fc_s32fc_multiply_32fc(out, in, scalar, N); | ||
50 | * | ||
51 | * printf(" mag phase | mag phase\n"); | ||
52 | * for(unsigned int ii = 0; ii < N; ++ii){ | ||
53 | * printf("%+1.2f %+1.2f | %+1.2f %+1.2f\n", | ||
54 | * std::abs(in[ii]), std::arg(in[ii]), | ||
55 | * std::abs(out[ii]), std::arg(out[ii])); | ||
56 | * } | ||
57 | * | ||
58 | * volk_free(in); | ||
59 | * volk_free(out); | ||
60 | * \endcode | ||
61 | */ | ||
62 | |||
63 | #ifndef INCLUDED_volk_32fc_s32fc_multiply_32fc_u_H | ||
64 | #define INCLUDED_volk_32fc_s32fc_multiply_32fc_u_H | ||
65 | |||
66 | #include <float.h> | ||
67 | #include <inttypes.h> | ||
68 | #include <stdio.h> | ||
69 | #include <volk/volk_complex.h> | ||
70 | |||
71 | #if LV_HAVE_AVX && LV_HAVE_FMA | ||
72 | #include <immintrin.h> | ||
73 | |||
74 | 2 | static inline void volk_32fc_s32fc_multiply_32fc_u_avx_fma(lv_32fc_t* cVector, | |
75 | const lv_32fc_t* aVector, | ||
76 | const lv_32fc_t scalar, | ||
77 | unsigned int num_points) | ||
78 | { | ||
79 | 2 | unsigned int number = 0; | |
80 | 2 | unsigned int i = 0; | |
81 | 2 | const unsigned int quarterPoints = num_points / 4; | |
82 | 2 | unsigned int isodd = num_points & 3; | |
83 | __m256 x, yl, yh, z, tmp1, tmp2; | ||
84 | 2 | lv_32fc_t* c = cVector; | |
85 | 2 | const lv_32fc_t* a = aVector; | |
86 | |||
87 | // Set up constant scalar vector | ||
88 | 2 | yl = _mm256_set1_ps(lv_creal(scalar)); | |
89 | 2 | yh = _mm256_set1_ps(lv_cimag(scalar)); | |
90 | |||
91 |
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65536 | for (; number < quarterPoints; number++) { |
92 | 65534 | x = _mm256_loadu_ps((float*)a); // Load the ar + ai, br + bi as ar,ai,br,bi | |
93 | |||
94 | 65534 | tmp1 = x; | |
95 | |||
96 | 65534 | x = _mm256_shuffle_ps(x, x, 0xB1); // Re-arrange x to be ai,ar,bi,br | |
97 | |||
98 | 65534 | tmp2 = _mm256_mul_ps(x, yh); // tmp2 = ai*ci,ar*ci,bi*di,br*di | |
99 | |||
100 | 65534 | z = _mm256_fmaddsub_ps( | |
101 | tmp1, yl, tmp2); // ar*cr-ai*ci, ai*cr+ar*ci, br*dr-bi*di, bi*dr+br*di | ||
102 | |||
103 | _mm256_storeu_ps((float*)c, z); // Store the results back into the C container | ||
104 | |||
105 | 65534 | a += 4; | |
106 | 65534 | c += 4; | |
107 | } | ||
108 | |||
109 |
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8 | for (i = num_points - isodd; i < num_points; i++) { |
110 | 6 | *c++ = (*a++) * scalar; | |
111 | } | ||
112 | 2 | } | |
113 | #endif /* LV_HAVE_AVX && LV_HAVE_FMA */ | ||
114 | |||
115 | #ifdef LV_HAVE_AVX | ||
116 | #include <immintrin.h> | ||
117 | |||
118 | 2 | static inline void volk_32fc_s32fc_multiply_32fc_u_avx(lv_32fc_t* cVector, | |
119 | const lv_32fc_t* aVector, | ||
120 | const lv_32fc_t scalar, | ||
121 | unsigned int num_points) | ||
122 | { | ||
123 | 2 | unsigned int number = 0; | |
124 | 2 | unsigned int i = 0; | |
125 | 2 | const unsigned int quarterPoints = num_points / 4; | |
126 | 2 | unsigned int isodd = num_points & 3; | |
127 | __m256 x, yl, yh, z, tmp1, tmp2; | ||
128 | 2 | lv_32fc_t* c = cVector; | |
129 | 2 | const lv_32fc_t* a = aVector; | |
130 | |||
131 | // Set up constant scalar vector | ||
132 | 2 | yl = _mm256_set1_ps(lv_creal(scalar)); | |
133 | 2 | yh = _mm256_set1_ps(lv_cimag(scalar)); | |
134 | |||
135 |
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65536 | for (; number < quarterPoints; number++) { |
136 | 65534 | x = _mm256_loadu_ps((float*)a); // Load the ar + ai, br + bi as ar,ai,br,bi | |
137 | |||
138 | 65534 | tmp1 = _mm256_mul_ps(x, yl); // tmp1 = ar*cr,ai*cr,br*dr,bi*dr | |
139 | |||
140 | 65534 | x = _mm256_shuffle_ps(x, x, 0xB1); // Re-arrange x to be ai,ar,bi,br | |
141 | |||
142 | 65534 | tmp2 = _mm256_mul_ps(x, yh); // tmp2 = ai*ci,ar*ci,bi*di,br*di | |
143 | |||
144 | 65534 | z = _mm256_addsub_ps(tmp1, | |
145 | tmp2); // ar*cr-ai*ci, ai*cr+ar*ci, br*dr-bi*di, bi*dr+br*di | ||
146 | |||
147 | _mm256_storeu_ps((float*)c, z); // Store the results back into the C container | ||
148 | |||
149 | 65534 | a += 4; | |
150 | 65534 | c += 4; | |
151 | } | ||
152 | |||
153 |
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8 | for (i = num_points - isodd; i < num_points; i++) { |
154 | 6 | *c++ = (*a++) * scalar; | |
155 | } | ||
156 | 2 | } | |
157 | #endif /* LV_HAVE_AVX */ | ||
158 | |||
159 | #ifdef LV_HAVE_SSE3 | ||
160 | #include <pmmintrin.h> | ||
161 | |||
162 | 2 | static inline void volk_32fc_s32fc_multiply_32fc_u_sse3(lv_32fc_t* cVector, | |
163 | const lv_32fc_t* aVector, | ||
164 | const lv_32fc_t scalar, | ||
165 | unsigned int num_points) | ||
166 | { | ||
167 | 2 | unsigned int number = 0; | |
168 | 2 | const unsigned int halfPoints = num_points / 2; | |
169 | |||
170 | __m128 x, yl, yh, z, tmp1, tmp2; | ||
171 | 2 | lv_32fc_t* c = cVector; | |
172 | 2 | const lv_32fc_t* a = aVector; | |
173 | |||
174 | // Set up constant scalar vector | ||
175 | 2 | yl = _mm_set_ps1(lv_creal(scalar)); | |
176 | 2 | yh = _mm_set_ps1(lv_cimag(scalar)); | |
177 | |||
178 |
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131072 | for (; number < halfPoints; number++) { |
179 | |||
180 | 131070 | x = _mm_loadu_ps((float*)a); // Load the ar + ai, br + bi as ar,ai,br,bi | |
181 | |||
182 | 131070 | tmp1 = _mm_mul_ps(x, yl); // tmp1 = ar*cr,ai*cr,br*dr,bi*dr | |
183 | |||
184 | 131070 | x = _mm_shuffle_ps(x, x, 0xB1); // Re-arrange x to be ai,ar,bi,br | |
185 | |||
186 | 131070 | tmp2 = _mm_mul_ps(x, yh); // tmp2 = ai*ci,ar*ci,bi*di,br*di | |
187 | |||
188 | 131070 | z = _mm_addsub_ps(tmp1, | |
189 | tmp2); // ar*cr-ai*ci, ai*cr+ar*ci, br*dr-bi*di, bi*dr+br*di | ||
190 | |||
191 | _mm_storeu_ps((float*)c, z); // Store the results back into the C container | ||
192 | |||
193 | 131070 | a += 2; | |
194 | 131070 | c += 2; | |
195 | } | ||
196 | |||
197 |
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2 | if ((num_points % 2) != 0) { |
198 | 2 | *c = (*a) * scalar; | |
199 | } | ||
200 | 2 | } | |
201 | #endif /* LV_HAVE_SSE */ | ||
202 | |||
203 | #ifdef LV_HAVE_GENERIC | ||
204 | |||
205 | 2 | static inline void volk_32fc_s32fc_multiply_32fc_generic(lv_32fc_t* cVector, | |
206 | const lv_32fc_t* aVector, | ||
207 | const lv_32fc_t scalar, | ||
208 | unsigned int num_points) | ||
209 | { | ||
210 | 2 | lv_32fc_t* cPtr = cVector; | |
211 | 2 | const lv_32fc_t* aPtr = aVector; | |
212 | 2 | unsigned int number = num_points; | |
213 | |||
214 | // unwrap loop | ||
215 |
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32768 | while (number >= 8) { |
216 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
217 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
218 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
219 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
220 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
221 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
222 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
223 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
224 | 32766 | number -= 8; | |
225 | } | ||
226 | |||
227 | // clean up any remaining | ||
228 |
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16 | while (number-- > 0) |
229 | 14 | *cPtr++ = *aPtr++ * scalar; | |
230 | 2 | } | |
231 | #endif /* LV_HAVE_GENERIC */ | ||
232 | |||
233 | |||
234 | #endif /* INCLUDED_volk_32fc_x2_multiply_32fc_u_H */ | ||
235 | #ifndef INCLUDED_volk_32fc_s32fc_multiply_32fc_a_H | ||
236 | #define INCLUDED_volk_32fc_s32fc_multiply_32fc_a_H | ||
237 | |||
238 | #include <float.h> | ||
239 | #include <inttypes.h> | ||
240 | #include <stdio.h> | ||
241 | #include <volk/volk_complex.h> | ||
242 | |||
243 | #if LV_HAVE_AVX && LV_HAVE_FMA | ||
244 | #include <immintrin.h> | ||
245 | |||
246 | 2 | static inline void volk_32fc_s32fc_multiply_32fc_a_avx_fma(lv_32fc_t* cVector, | |
247 | const lv_32fc_t* aVector, | ||
248 | const lv_32fc_t scalar, | ||
249 | unsigned int num_points) | ||
250 | { | ||
251 | 2 | unsigned int number = 0; | |
252 | 2 | unsigned int i = 0; | |
253 | 2 | const unsigned int quarterPoints = num_points / 4; | |
254 | 2 | unsigned int isodd = num_points & 3; | |
255 | __m256 x, yl, yh, z, tmp1, tmp2; | ||
256 | 2 | lv_32fc_t* c = cVector; | |
257 | 2 | const lv_32fc_t* a = aVector; | |
258 | |||
259 | // Set up constant scalar vector | ||
260 | 2 | yl = _mm256_set1_ps(lv_creal(scalar)); | |
261 | 2 | yh = _mm256_set1_ps(lv_cimag(scalar)); | |
262 | |||
263 |
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65536 | for (; number < quarterPoints; number++) { |
264 | 65534 | x = _mm256_load_ps((float*)a); // Load the ar + ai, br + bi as ar,ai,br,bi | |
265 | |||
266 | 65534 | tmp1 = x; | |
267 | |||
268 | 65534 | x = _mm256_shuffle_ps(x, x, 0xB1); // Re-arrange x to be ai,ar,bi,br | |
269 | |||
270 | 65534 | tmp2 = _mm256_mul_ps(x, yh); // tmp2 = ai*ci,ar*ci,bi*di,br*di | |
271 | |||
272 | 65534 | z = _mm256_fmaddsub_ps( | |
273 | tmp1, yl, tmp2); // ar*cr-ai*ci, ai*cr+ar*ci, br*dr-bi*di, bi*dr+br*di | ||
274 | |||
275 | _mm256_store_ps((float*)c, z); // Store the results back into the C container | ||
276 | |||
277 | 65534 | a += 4; | |
278 | 65534 | c += 4; | |
279 | } | ||
280 | |||
281 |
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8 | for (i = num_points - isodd; i < num_points; i++) { |
282 | 6 | *c++ = (*a++) * scalar; | |
283 | } | ||
284 | 2 | } | |
285 | #endif /* LV_HAVE_AVX && LV_HAVE_FMA */ | ||
286 | |||
287 | |||
288 | #ifdef LV_HAVE_AVX | ||
289 | #include <immintrin.h> | ||
290 | |||
291 | 2 | static inline void volk_32fc_s32fc_multiply_32fc_a_avx(lv_32fc_t* cVector, | |
292 | const lv_32fc_t* aVector, | ||
293 | const lv_32fc_t scalar, | ||
294 | unsigned int num_points) | ||
295 | { | ||
296 | 2 | unsigned int number = 0; | |
297 | 2 | unsigned int i = 0; | |
298 | 2 | const unsigned int quarterPoints = num_points / 4; | |
299 | 2 | unsigned int isodd = num_points & 3; | |
300 | __m256 x, yl, yh, z, tmp1, tmp2; | ||
301 | 2 | lv_32fc_t* c = cVector; | |
302 | 2 | const lv_32fc_t* a = aVector; | |
303 | |||
304 | // Set up constant scalar vector | ||
305 | 2 | yl = _mm256_set1_ps(lv_creal(scalar)); | |
306 | 2 | yh = _mm256_set1_ps(lv_cimag(scalar)); | |
307 | |||
308 |
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65536 | for (; number < quarterPoints; number++) { |
309 | 65534 | x = _mm256_load_ps((float*)a); // Load the ar + ai, br + bi as ar,ai,br,bi | |
310 | |||
311 | 65534 | tmp1 = _mm256_mul_ps(x, yl); // tmp1 = ar*cr,ai*cr,br*dr,bi*dr | |
312 | |||
313 | 65534 | x = _mm256_shuffle_ps(x, x, 0xB1); // Re-arrange x to be ai,ar,bi,br | |
314 | |||
315 | 65534 | tmp2 = _mm256_mul_ps(x, yh); // tmp2 = ai*ci,ar*ci,bi*di,br*di | |
316 | |||
317 | 65534 | z = _mm256_addsub_ps(tmp1, | |
318 | tmp2); // ar*cr-ai*ci, ai*cr+ar*ci, br*dr-bi*di, bi*dr+br*di | ||
319 | |||
320 | _mm256_store_ps((float*)c, z); // Store the results back into the C container | ||
321 | |||
322 | 65534 | a += 4; | |
323 | 65534 | c += 4; | |
324 | } | ||
325 | |||
326 |
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8 | for (i = num_points - isodd; i < num_points; i++) { |
327 | 6 | *c++ = (*a++) * scalar; | |
328 | } | ||
329 | 2 | } | |
330 | #endif /* LV_HAVE_AVX */ | ||
331 | |||
332 | #ifdef LV_HAVE_SSE3 | ||
333 | #include <pmmintrin.h> | ||
334 | |||
335 | 2 | static inline void volk_32fc_s32fc_multiply_32fc_a_sse3(lv_32fc_t* cVector, | |
336 | const lv_32fc_t* aVector, | ||
337 | const lv_32fc_t scalar, | ||
338 | unsigned int num_points) | ||
339 | { | ||
340 | 2 | unsigned int number = 0; | |
341 | 2 | const unsigned int halfPoints = num_points / 2; | |
342 | |||
343 | __m128 x, yl, yh, z, tmp1, tmp2; | ||
344 | 2 | lv_32fc_t* c = cVector; | |
345 | 2 | const lv_32fc_t* a = aVector; | |
346 | |||
347 | // Set up constant scalar vector | ||
348 | 2 | yl = _mm_set_ps1(lv_creal(scalar)); | |
349 | 2 | yh = _mm_set_ps1(lv_cimag(scalar)); | |
350 | |||
351 |
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131072 | for (; number < halfPoints; number++) { |
352 | |||
353 | 131070 | x = _mm_load_ps((float*)a); // Load the ar + ai, br + bi as ar,ai,br,bi | |
354 | |||
355 | 131070 | tmp1 = _mm_mul_ps(x, yl); // tmp1 = ar*cr,ai*cr,br*dr,bi*dr | |
356 | |||
357 | 131070 | x = _mm_shuffle_ps(x, x, 0xB1); // Re-arrange x to be ai,ar,bi,br | |
358 | |||
359 | 131070 | tmp2 = _mm_mul_ps(x, yh); // tmp2 = ai*ci,ar*ci,bi*di,br*di | |
360 | |||
361 | 131070 | z = _mm_addsub_ps(tmp1, | |
362 | tmp2); // ar*cr-ai*ci, ai*cr+ar*ci, br*dr-bi*di, bi*dr+br*di | ||
363 | |||
364 | _mm_store_ps((float*)c, z); // Store the results back into the C container | ||
365 | |||
366 | 131070 | a += 2; | |
367 | 131070 | c += 2; | |
368 | } | ||
369 | |||
370 |
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2 | if ((num_points % 2) != 0) { |
371 | 2 | *c = (*a) * scalar; | |
372 | } | ||
373 | 2 | } | |
374 | #endif /* LV_HAVE_SSE */ | ||
375 | |||
376 | #ifdef LV_HAVE_NEON | ||
377 | #include <arm_neon.h> | ||
378 | |||
379 | static inline void volk_32fc_s32fc_multiply_32fc_neon(lv_32fc_t* cVector, | ||
380 | const lv_32fc_t* aVector, | ||
381 | const lv_32fc_t scalar, | ||
382 | unsigned int num_points) | ||
383 | { | ||
384 | lv_32fc_t* cPtr = cVector; | ||
385 | const lv_32fc_t* aPtr = aVector; | ||
386 | unsigned int number = num_points; | ||
387 | unsigned int quarter_points = num_points / 4; | ||
388 | |||
389 | float32x4x2_t a_val, scalar_val; | ||
390 | float32x4x2_t tmp_imag; | ||
391 | |||
392 | scalar_val.val[0] = vld1q_dup_f32((const float*)&scalar); | ||
393 | scalar_val.val[1] = vld1q_dup_f32(((const float*)&scalar) + 1); | ||
394 | for (number = 0; number < quarter_points; ++number) { | ||
395 | a_val = vld2q_f32((float*)aPtr); | ||
396 | tmp_imag.val[1] = vmulq_f32(a_val.val[1], scalar_val.val[0]); | ||
397 | tmp_imag.val[0] = vmulq_f32(a_val.val[0], scalar_val.val[0]); | ||
398 | |||
399 | tmp_imag.val[1] = vmlaq_f32(tmp_imag.val[1], a_val.val[0], scalar_val.val[1]); | ||
400 | tmp_imag.val[0] = vmlsq_f32(tmp_imag.val[0], a_val.val[1], scalar_val.val[1]); | ||
401 | |||
402 | vst2q_f32((float*)cPtr, tmp_imag); | ||
403 | aPtr += 4; | ||
404 | cPtr += 4; | ||
405 | } | ||
406 | |||
407 | for (number = quarter_points * 4; number < num_points; number++) { | ||
408 | *cPtr++ = *aPtr++ * scalar; | ||
409 | } | ||
410 | } | ||
411 | #endif /* LV_HAVE_NEON */ | ||
412 | |||
413 | #ifdef LV_HAVE_GENERIC | ||
414 | |||
415 | 2 | static inline void volk_32fc_s32fc_multiply_32fc_a_generic(lv_32fc_t* cVector, | |
416 | const lv_32fc_t* aVector, | ||
417 | const lv_32fc_t scalar, | ||
418 | unsigned int num_points) | ||
419 | { | ||
420 | 2 | lv_32fc_t* cPtr = cVector; | |
421 | 2 | const lv_32fc_t* aPtr = aVector; | |
422 | 2 | unsigned int number = num_points; | |
423 | |||
424 | // unwrap loop | ||
425 |
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32768 | while (number >= 8) { |
426 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
427 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
428 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
429 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
430 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
431 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
432 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
433 | 32766 | *cPtr++ = (*aPtr++) * scalar; | |
434 | 32766 | number -= 8; | |
435 | } | ||
436 | |||
437 | // clean up any remaining | ||
438 |
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16 | while (number-- > 0) |
439 | 14 | *cPtr++ = *aPtr++ * scalar; | |
440 | 2 | } | |
441 | #endif /* LV_HAVE_GENERIC */ | ||
442 | |||
443 | #endif /* INCLUDED_volk_32fc_x2_multiply_32fc_a_H */ | ||
444 |