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Eigen  3.4.0
AVX512/Complex.h
1// This file is part of Eigen, a lightweight C++ template library
2// for linear algebra.
3//
4// Copyright (C) 2018 Gael Guennebaud <gael.guennebaud@inria.fr>
5//
6// This Source Code Form is subject to the terms of the Mozilla
7// Public License v. 2.0. If a copy of the MPL was not distributed
8// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
9
10#ifndef EIGEN_COMPLEX_AVX512_H
11#define EIGEN_COMPLEX_AVX512_H
12
13namespace Eigen {
14
15namespace internal {
16
17//---------- float ----------
18struct Packet8cf
19{
20 EIGEN_STRONG_INLINE Packet8cf() {}
21 EIGEN_STRONG_INLINE explicit Packet8cf(const __m512& a) : v(a) {}
22 __m512 v;
23};
24
25template<> struct packet_traits<std::complex<float> > : default_packet_traits
26{
27 typedef Packet8cf type;
28 typedef Packet4cf half;
29 enum {
30 Vectorizable = 1,
31 AlignedOnScalar = 1,
32 size = 8,
33 HasHalfPacket = 1,
34
35 HasAdd = 1,
36 HasSub = 1,
37 HasMul = 1,
38 HasDiv = 1,
39 HasNegate = 1,
40 HasSqrt = 1,
41 HasAbs = 0,
42 HasAbs2 = 0,
43 HasMin = 0,
44 HasMax = 0,
45 HasSetLinear = 0
46 };
47};
48
49template<> struct unpacket_traits<Packet8cf> {
50 typedef std::complex<float> type;
51 typedef Packet4cf half;
52 typedef Packet16f as_real;
53 enum {
54 size = 8,
55 alignment=unpacket_traits<Packet16f>::alignment,
56 vectorizable=true,
57 masked_load_available=false,
58 masked_store_available=false
59 };
60};
61
62template<> EIGEN_STRONG_INLINE Packet8cf ptrue<Packet8cf>(const Packet8cf& a) { return Packet8cf(ptrue(Packet16f(a.v))); }
63template<> EIGEN_STRONG_INLINE Packet8cf padd<Packet8cf>(const Packet8cf& a, const Packet8cf& b) { return Packet8cf(_mm512_add_ps(a.v,b.v)); }
64template<> EIGEN_STRONG_INLINE Packet8cf psub<Packet8cf>(const Packet8cf& a, const Packet8cf& b) { return Packet8cf(_mm512_sub_ps(a.v,b.v)); }
65template<> EIGEN_STRONG_INLINE Packet8cf pnegate(const Packet8cf& a)
66{
67 return Packet8cf(pnegate(a.v));
68}
69template<> EIGEN_STRONG_INLINE Packet8cf pconj(const Packet8cf& a)
70{
71 const __m512 mask = _mm512_castsi512_ps(_mm512_setr_epi32(
72 0x00000000,0x80000000,0x00000000,0x80000000,0x00000000,0x80000000,0x00000000,0x80000000,
73 0x00000000,0x80000000,0x00000000,0x80000000,0x00000000,0x80000000,0x00000000,0x80000000));
74 return Packet8cf(pxor(a.v,mask));
75}
76
77template<> EIGEN_STRONG_INLINE Packet8cf pmul<Packet8cf>(const Packet8cf& a, const Packet8cf& b)
78{
79 __m512 tmp2 = _mm512_mul_ps(_mm512_movehdup_ps(a.v), _mm512_permute_ps(b.v, _MM_SHUFFLE(2,3,0,1)));
80 return Packet8cf(_mm512_fmaddsub_ps(_mm512_moveldup_ps(a.v), b.v, tmp2));
81}
82
83template<> EIGEN_STRONG_INLINE Packet8cf pand <Packet8cf>(const Packet8cf& a, const Packet8cf& b) { return Packet8cf(pand(a.v,b.v)); }
84template<> EIGEN_STRONG_INLINE Packet8cf por <Packet8cf>(const Packet8cf& a, const Packet8cf& b) { return Packet8cf(por(a.v,b.v)); }
85template<> EIGEN_STRONG_INLINE Packet8cf pxor <Packet8cf>(const Packet8cf& a, const Packet8cf& b) { return Packet8cf(pxor(a.v,b.v)); }
86template<> EIGEN_STRONG_INLINE Packet8cf pandnot<Packet8cf>(const Packet8cf& a, const Packet8cf& b) { return Packet8cf(pandnot(a.v,b.v)); }
87
88template <>
89EIGEN_STRONG_INLINE Packet8cf pcmp_eq(const Packet8cf& a, const Packet8cf& b) {
90 __m512 eq = pcmp_eq<Packet16f>(a.v, b.v);
91 return Packet8cf(pand(eq, _mm512_permute_ps(eq, 0xB1)));
92}
93
94template<> EIGEN_STRONG_INLINE Packet8cf pload <Packet8cf>(const std::complex<float>* from) { EIGEN_DEBUG_ALIGNED_LOAD return Packet8cf(pload<Packet16f>(&numext::real_ref(*from))); }
95template<> EIGEN_STRONG_INLINE Packet8cf ploadu<Packet8cf>(const std::complex<float>* from) { EIGEN_DEBUG_UNALIGNED_LOAD return Packet8cf(ploadu<Packet16f>(&numext::real_ref(*from))); }
96
97
98template<> EIGEN_STRONG_INLINE Packet8cf pset1<Packet8cf>(const std::complex<float>& from)
99{
100 return Packet8cf(_mm512_castpd_ps(pload1<Packet8d>((const double*)(const void*)&from)));
101}
102
103template<> EIGEN_STRONG_INLINE Packet8cf ploaddup<Packet8cf>(const std::complex<float>* from)
104{
105 return Packet8cf( _mm512_castpd_ps( ploaddup<Packet8d>((const double*)(const void*)from )) );
106}
107template<> EIGEN_STRONG_INLINE Packet8cf ploadquad<Packet8cf>(const std::complex<float>* from)
108{
109 return Packet8cf( _mm512_castpd_ps( ploadquad<Packet8d>((const double*)(const void*)from )) );
110}
111
112template<> EIGEN_STRONG_INLINE void pstore <std::complex<float> >(std::complex<float>* to, const Packet8cf& from) { EIGEN_DEBUG_ALIGNED_STORE pstore(&numext::real_ref(*to), from.v); }
113template<> EIGEN_STRONG_INLINE void pstoreu<std::complex<float> >(std::complex<float>* to, const Packet8cf& from) { EIGEN_DEBUG_UNALIGNED_STORE pstoreu(&numext::real_ref(*to), from.v); }
114
115template<> EIGEN_DEVICE_FUNC inline Packet8cf pgather<std::complex<float>, Packet8cf>(const std::complex<float>* from, Index stride)
116{
117 return Packet8cf(_mm512_castpd_ps(pgather<double,Packet8d>((const double*)(const void*)from, stride)));
118}
119
120template<> EIGEN_DEVICE_FUNC inline void pscatter<std::complex<float>, Packet8cf>(std::complex<float>* to, const Packet8cf& from, Index stride)
121{
122 pscatter((double*)(void*)to, _mm512_castps_pd(from.v), stride);
123}
124
125template<> EIGEN_STRONG_INLINE std::complex<float> pfirst<Packet8cf>(const Packet8cf& a)
126{
127 return pfirst(Packet2cf(_mm512_castps512_ps128(a.v)));
128}
129
130template<> EIGEN_STRONG_INLINE Packet8cf preverse(const Packet8cf& a) {
131 return Packet8cf(_mm512_castsi512_ps(
132 _mm512_permutexvar_epi64( _mm512_set_epi32(0, 0, 0, 1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7),
133 _mm512_castps_si512(a.v))));
134}
135
136template<> EIGEN_STRONG_INLINE std::complex<float> predux<Packet8cf>(const Packet8cf& a)
137{
138 return predux(padd(Packet4cf(extract256<0>(a.v)),
139 Packet4cf(extract256<1>(a.v))));
140}
141
142template<> EIGEN_STRONG_INLINE std::complex<float> predux_mul<Packet8cf>(const Packet8cf& a)
143{
144 return predux_mul(pmul(Packet4cf(extract256<0>(a.v)),
145 Packet4cf(extract256<1>(a.v))));
146}
147
148template <>
149EIGEN_STRONG_INLINE Packet4cf predux_half_dowto4<Packet8cf>(const Packet8cf& a) {
150 __m256 lane0 = extract256<0>(a.v);
151 __m256 lane1 = extract256<1>(a.v);
152 __m256 res = _mm256_add_ps(lane0, lane1);
153 return Packet4cf(res);
154}
155
156EIGEN_MAKE_CONJ_HELPER_CPLX_REAL(Packet8cf,Packet16f)
157
158template<> EIGEN_STRONG_INLINE Packet8cf pdiv<Packet8cf>(const Packet8cf& a, const Packet8cf& b)
159{
160 Packet8cf num = pmul(a, pconj(b));
161 __m512 tmp = _mm512_mul_ps(b.v, b.v);
162 __m512 tmp2 = _mm512_shuffle_ps(tmp,tmp,0xB1);
163 __m512 denom = _mm512_add_ps(tmp, tmp2);
164 return Packet8cf(_mm512_div_ps(num.v, denom));
165}
166
167template<> EIGEN_STRONG_INLINE Packet8cf pcplxflip<Packet8cf>(const Packet8cf& x)
168{
169 return Packet8cf(_mm512_shuffle_ps(x.v, x.v, _MM_SHUFFLE(2, 3, 0 ,1)));
170}
171
172//---------- double ----------
173struct Packet4cd
174{
175 EIGEN_STRONG_INLINE Packet4cd() {}
176 EIGEN_STRONG_INLINE explicit Packet4cd(const __m512d& a) : v(a) {}
177 __m512d v;
178};
179
180template<> struct packet_traits<std::complex<double> > : default_packet_traits
181{
182 typedef Packet4cd type;
183 typedef Packet2cd half;
184 enum {
185 Vectorizable = 1,
186 AlignedOnScalar = 0,
187 size = 4,
188 HasHalfPacket = 1,
189
190 HasAdd = 1,
191 HasSub = 1,
192 HasMul = 1,
193 HasDiv = 1,
194 HasNegate = 1,
195 HasSqrt = 1,
196 HasAbs = 0,
197 HasAbs2 = 0,
198 HasMin = 0,
199 HasMax = 0,
200 HasSetLinear = 0
201 };
202};
203
204template<> struct unpacket_traits<Packet4cd> {
205 typedef std::complex<double> type;
206 typedef Packet2cd half;
207 typedef Packet8d as_real;
208 enum {
209 size = 4,
210 alignment = unpacket_traits<Packet8d>::alignment,
211 vectorizable=true,
212 masked_load_available=false,
213 masked_store_available=false
214 };
215};
216
217template<> EIGEN_STRONG_INLINE Packet4cd padd<Packet4cd>(const Packet4cd& a, const Packet4cd& b) { return Packet4cd(_mm512_add_pd(a.v,b.v)); }
218template<> EIGEN_STRONG_INLINE Packet4cd psub<Packet4cd>(const Packet4cd& a, const Packet4cd& b) { return Packet4cd(_mm512_sub_pd(a.v,b.v)); }
219template<> EIGEN_STRONG_INLINE Packet4cd pnegate(const Packet4cd& a) { return Packet4cd(pnegate(a.v)); }
220template<> EIGEN_STRONG_INLINE Packet4cd pconj(const Packet4cd& a)
221{
222 const __m512d mask = _mm512_castsi512_pd(
223 _mm512_set_epi32(0x80000000,0x0,0x0,0x0,0x80000000,0x0,0x0,0x0,
224 0x80000000,0x0,0x0,0x0,0x80000000,0x0,0x0,0x0));
225 return Packet4cd(pxor(a.v,mask));
226}
227
228template<> EIGEN_STRONG_INLINE Packet4cd pmul<Packet4cd>(const Packet4cd& a, const Packet4cd& b)
229{
230 __m512d tmp1 = _mm512_shuffle_pd(a.v,a.v,0x0);
231 __m512d tmp2 = _mm512_shuffle_pd(a.v,a.v,0xFF);
232 __m512d tmp3 = _mm512_shuffle_pd(b.v,b.v,0x55);
233 __m512d odd = _mm512_mul_pd(tmp2, tmp3);
234 return Packet4cd(_mm512_fmaddsub_pd(tmp1, b.v, odd));
235}
236
237template<> EIGEN_STRONG_INLINE Packet4cd ptrue<Packet4cd>(const Packet4cd& a) { return Packet4cd(ptrue(Packet8d(a.v))); }
238template<> EIGEN_STRONG_INLINE Packet4cd pand <Packet4cd>(const Packet4cd& a, const Packet4cd& b) { return Packet4cd(pand(a.v,b.v)); }
239template<> EIGEN_STRONG_INLINE Packet4cd por <Packet4cd>(const Packet4cd& a, const Packet4cd& b) { return Packet4cd(por(a.v,b.v)); }
240template<> EIGEN_STRONG_INLINE Packet4cd pxor <Packet4cd>(const Packet4cd& a, const Packet4cd& b) { return Packet4cd(pxor(a.v,b.v)); }
241template<> EIGEN_STRONG_INLINE Packet4cd pandnot<Packet4cd>(const Packet4cd& a, const Packet4cd& b) { return Packet4cd(pandnot(a.v,b.v)); }
242
243template <>
244EIGEN_STRONG_INLINE Packet4cd pcmp_eq(const Packet4cd& a, const Packet4cd& b) {
245 __m512d eq = pcmp_eq<Packet8d>(a.v, b.v);
246 return Packet4cd(pand(eq, _mm512_permute_pd(eq, 0x55)));
247}
248
249template<> EIGEN_STRONG_INLINE Packet4cd pload <Packet4cd>(const std::complex<double>* from)
250{ EIGEN_DEBUG_ALIGNED_LOAD return Packet4cd(pload<Packet8d>((const double*)from)); }
251template<> EIGEN_STRONG_INLINE Packet4cd ploadu<Packet4cd>(const std::complex<double>* from)
252{ EIGEN_DEBUG_UNALIGNED_LOAD return Packet4cd(ploadu<Packet8d>((const double*)from)); }
253
254template<> EIGEN_STRONG_INLINE Packet4cd pset1<Packet4cd>(const std::complex<double>& from)
255{
256 #ifdef EIGEN_VECTORIZE_AVX512DQ
257 return Packet4cd(_mm512_broadcast_f64x2(pset1<Packet1cd>(from).v));
258 #else
259 return Packet4cd(_mm512_castps_pd(_mm512_broadcast_f32x4( _mm_castpd_ps(pset1<Packet1cd>(from).v))));
260 #endif
261}
262
263template<> EIGEN_STRONG_INLINE Packet4cd ploaddup<Packet4cd>(const std::complex<double>* from) {
264 return Packet4cd(_mm512_insertf64x4(
265 _mm512_castpd256_pd512(ploaddup<Packet2cd>(from).v), ploaddup<Packet2cd>(from+1).v, 1));
266}
267
268template<> EIGEN_STRONG_INLINE void pstore <std::complex<double> >(std::complex<double> * to, const Packet4cd& from) { EIGEN_DEBUG_ALIGNED_STORE pstore((double*)to, from.v); }
269template<> EIGEN_STRONG_INLINE void pstoreu<std::complex<double> >(std::complex<double> * to, const Packet4cd& from) { EIGEN_DEBUG_UNALIGNED_STORE pstoreu((double*)to, from.v); }
270
271template<> EIGEN_DEVICE_FUNC inline Packet4cd pgather<std::complex<double>, Packet4cd>(const std::complex<double>* from, Index stride)
272{
273 return Packet4cd(_mm512_insertf64x4(_mm512_castpd256_pd512(
274 _mm256_insertf128_pd(_mm256_castpd128_pd256(ploadu<Packet1cd>(from+0*stride).v), ploadu<Packet1cd>(from+1*stride).v,1)),
275 _mm256_insertf128_pd(_mm256_castpd128_pd256(ploadu<Packet1cd>(from+2*stride).v), ploadu<Packet1cd>(from+3*stride).v,1), 1));
276}
277
278template<> EIGEN_DEVICE_FUNC inline void pscatter<std::complex<double>, Packet4cd>(std::complex<double>* to, const Packet4cd& from, Index stride)
279{
280 __m512i fromi = _mm512_castpd_si512(from.v);
281 double* tod = (double*)(void*)to;
282 _mm_storeu_pd(tod+0*stride, _mm_castsi128_pd(_mm512_extracti32x4_epi32(fromi,0)) );
283 _mm_storeu_pd(tod+2*stride, _mm_castsi128_pd(_mm512_extracti32x4_epi32(fromi,1)) );
284 _mm_storeu_pd(tod+4*stride, _mm_castsi128_pd(_mm512_extracti32x4_epi32(fromi,2)) );
285 _mm_storeu_pd(tod+6*stride, _mm_castsi128_pd(_mm512_extracti32x4_epi32(fromi,3)) );
286}
287
288template<> EIGEN_STRONG_INLINE std::complex<double> pfirst<Packet4cd>(const Packet4cd& a)
289{
290 __m128d low = extract128<0>(a.v);
291 EIGEN_ALIGN16 double res[2];
292 _mm_store_pd(res, low);
293 return std::complex<double>(res[0],res[1]);
294}
295
296template<> EIGEN_STRONG_INLINE Packet4cd preverse(const Packet4cd& a) {
297 return Packet4cd(_mm512_shuffle_f64x2(a.v, a.v, (shuffle_mask<3,2,1,0>::mask)));
298}
299
300template<> EIGEN_STRONG_INLINE std::complex<double> predux<Packet4cd>(const Packet4cd& a)
301{
302 return predux(padd(Packet2cd(_mm512_extractf64x4_pd(a.v,0)),
303 Packet2cd(_mm512_extractf64x4_pd(a.v,1))));
304}
305
306template<> EIGEN_STRONG_INLINE std::complex<double> predux_mul<Packet4cd>(const Packet4cd& a)
307{
308 return predux_mul(pmul(Packet2cd(_mm512_extractf64x4_pd(a.v,0)),
309 Packet2cd(_mm512_extractf64x4_pd(a.v,1))));
310}
311
312template<> struct conj_helper<Packet4cd, Packet4cd, false,true>
313{
314 EIGEN_STRONG_INLINE Packet4cd pmadd(const Packet4cd& x, const Packet4cd& y, const Packet4cd& c) const
315 { return padd(pmul(x,y),c); }
316
317 EIGEN_STRONG_INLINE Packet4cd pmul(const Packet4cd& a, const Packet4cd& b) const
318 {
319 return internal::pmul(a, pconj(b));
320 }
321};
322
323template<> struct conj_helper<Packet4cd, Packet4cd, true,false>
324{
325 EIGEN_STRONG_INLINE Packet4cd pmadd(const Packet4cd& x, const Packet4cd& y, const Packet4cd& c) const
326 { return padd(pmul(x,y),c); }
327
328 EIGEN_STRONG_INLINE Packet4cd pmul(const Packet4cd& a, const Packet4cd& b) const
329 {
330 return internal::pmul(pconj(a), b);
331 }
332};
333
334template<> struct conj_helper<Packet4cd, Packet4cd, true,true>
335{
336 EIGEN_STRONG_INLINE Packet4cd pmadd(const Packet4cd& x, const Packet4cd& y, const Packet4cd& c) const
337 { return padd(pmul(x,y),c); }
338
339 EIGEN_STRONG_INLINE Packet4cd pmul(const Packet4cd& a, const Packet4cd& b) const
340 {
341 return pconj(internal::pmul(a, b));
342 }
343};
344
345EIGEN_MAKE_CONJ_HELPER_CPLX_REAL(Packet4cd,Packet8d)
346
347template<> EIGEN_STRONG_INLINE Packet4cd pdiv<Packet4cd>(const Packet4cd& a, const Packet4cd& b)
348{
349 Packet4cd num = pmul(a, pconj(b));
350 __m512d tmp = _mm512_mul_pd(b.v, b.v);
351 __m512d denom = padd(_mm512_permute_pd(tmp,0x55), tmp);
352 return Packet4cd(_mm512_div_pd(num.v, denom));
353}
354
355template<> EIGEN_STRONG_INLINE Packet4cd pcplxflip<Packet4cd>(const Packet4cd& x)
356{
357 return Packet4cd(_mm512_permute_pd(x.v,0x55));
358}
359
360EIGEN_DEVICE_FUNC inline void
361ptranspose(PacketBlock<Packet8cf,4>& kernel) {
362 PacketBlock<Packet8d,4> pb;
363
364 pb.packet[0] = _mm512_castps_pd(kernel.packet[0].v);
365 pb.packet[1] = _mm512_castps_pd(kernel.packet[1].v);
366 pb.packet[2] = _mm512_castps_pd(kernel.packet[2].v);
367 pb.packet[3] = _mm512_castps_pd(kernel.packet[3].v);
368 ptranspose(pb);
369 kernel.packet[0].v = _mm512_castpd_ps(pb.packet[0]);
370 kernel.packet[1].v = _mm512_castpd_ps(pb.packet[1]);
371 kernel.packet[2].v = _mm512_castpd_ps(pb.packet[2]);
372 kernel.packet[3].v = _mm512_castpd_ps(pb.packet[3]);
373}
374
375EIGEN_DEVICE_FUNC inline void
376ptranspose(PacketBlock<Packet8cf,8>& kernel) {
377 PacketBlock<Packet8d,8> pb;
378
379 pb.packet[0] = _mm512_castps_pd(kernel.packet[0].v);
380 pb.packet[1] = _mm512_castps_pd(kernel.packet[1].v);
381 pb.packet[2] = _mm512_castps_pd(kernel.packet[2].v);
382 pb.packet[3] = _mm512_castps_pd(kernel.packet[3].v);
383 pb.packet[4] = _mm512_castps_pd(kernel.packet[4].v);
384 pb.packet[5] = _mm512_castps_pd(kernel.packet[5].v);
385 pb.packet[6] = _mm512_castps_pd(kernel.packet[6].v);
386 pb.packet[7] = _mm512_castps_pd(kernel.packet[7].v);
387 ptranspose(pb);
388 kernel.packet[0].v = _mm512_castpd_ps(pb.packet[0]);
389 kernel.packet[1].v = _mm512_castpd_ps(pb.packet[1]);
390 kernel.packet[2].v = _mm512_castpd_ps(pb.packet[2]);
391 kernel.packet[3].v = _mm512_castpd_ps(pb.packet[3]);
392 kernel.packet[4].v = _mm512_castpd_ps(pb.packet[4]);
393 kernel.packet[5].v = _mm512_castpd_ps(pb.packet[5]);
394 kernel.packet[6].v = _mm512_castpd_ps(pb.packet[6]);
395 kernel.packet[7].v = _mm512_castpd_ps(pb.packet[7]);
396}
397
398EIGEN_DEVICE_FUNC inline void
399ptranspose(PacketBlock<Packet4cd,4>& kernel) {
400 __m512d T0 = _mm512_shuffle_f64x2(kernel.packet[0].v, kernel.packet[1].v, (shuffle_mask<0,1,0,1>::mask)); // [a0 a1 b0 b1]
401 __m512d T1 = _mm512_shuffle_f64x2(kernel.packet[0].v, kernel.packet[1].v, (shuffle_mask<2,3,2,3>::mask)); // [a2 a3 b2 b3]
402 __m512d T2 = _mm512_shuffle_f64x2(kernel.packet[2].v, kernel.packet[3].v, (shuffle_mask<0,1,0,1>::mask)); // [c0 c1 d0 d1]
403 __m512d T3 = _mm512_shuffle_f64x2(kernel.packet[2].v, kernel.packet[3].v, (shuffle_mask<2,3,2,3>::mask)); // [c2 c3 d2 d3]
404
405 kernel.packet[3] = Packet4cd(_mm512_shuffle_f64x2(T1, T3, (shuffle_mask<1,3,1,3>::mask))); // [a3 b3 c3 d3]
406 kernel.packet[2] = Packet4cd(_mm512_shuffle_f64x2(T1, T3, (shuffle_mask<0,2,0,2>::mask))); // [a2 b2 c2 d2]
407 kernel.packet[1] = Packet4cd(_mm512_shuffle_f64x2(T0, T2, (shuffle_mask<1,3,1,3>::mask))); // [a1 b1 c1 d1]
408 kernel.packet[0] = Packet4cd(_mm512_shuffle_f64x2(T0, T2, (shuffle_mask<0,2,0,2>::mask))); // [a0 b0 c0 d0]
409}
410
411template<> EIGEN_STRONG_INLINE Packet4cd psqrt<Packet4cd>(const Packet4cd& a) {
412 return psqrt_complex<Packet4cd>(a);
413}
414
415template<> EIGEN_STRONG_INLINE Packet8cf psqrt<Packet8cf>(const Packet8cf& a) {
416 return psqrt_complex<Packet8cf>(a);
417}
418
419} // end namespace internal
420} // end namespace Eigen
421
422#endif // EIGEN_COMPLEX_AVX512_H
Eigen
Namespace containing all symbols from the Eigen library.
Definition: Core:141
Eigen::Index
EIGEN_DEFAULT_DENSE_INDEX_TYPE Index
The Index type as used for the API.
Definition: Meta.h:74