136 lines
3.8 KiB
C
136 lines
3.8 KiB
C
/*
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* This file is part of libsharp.
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*
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* libsharp is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* libsharp is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with libsharp; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* libsharp is being developed at the Max-Planck-Institut fuer Astrophysik
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* and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
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* (DLR).
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*/
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/* \file sharp_complex_hacks.h
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* support for converting vector types and complex numbers
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*
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* Copyright (C) 2012 Max-Planck-Society
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* Author: Martin Reinecke
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*/
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#ifndef SHARP_COMPLEX_HACKS_H
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#define SHARP_COMPLEX_HACKS_H
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#ifdef __cplusplus
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#error This header file cannot be included from C++, only from C
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#endif
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#include <math.h>
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#include <complex.h>
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#include "sharp_vecsupport.h"
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#define UNSAFE_CODE
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#if (VLEN==1)
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static inline complex double vhsum_cmplx(Tv a, Tv b)
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{ return a+_Complex_I*b; }
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static inline void vhsum_cmplx2 (Tv a, Tv b, Tv c, Tv d,
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complex double * restrict c1, complex double * restrict c2)
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{ *c1 += a+_Complex_I*b; *c2 += c+_Complex_I*d; }
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#endif
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#if (VLEN==2)
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static inline complex double vhsum_cmplx (Tv a, Tv b)
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{
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#if defined(__SSE3__)
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Tv tmp = _mm_hadd_pd(a,b);
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#else
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Tv tmp = vadd(_mm_shuffle_pd(a,b,_MM_SHUFFLE2(0,1)),
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_mm_shuffle_pd(a,b,_MM_SHUFFLE2(1,0)));
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#endif
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union {Tv v; complex double c; } u;
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u.v=tmp; return u.c;
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}
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static inline void vhsum_cmplx2 (Tv a, Tv b, Tv c,
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Tv d, complex double * restrict c1, complex double * restrict c2)
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{
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#ifdef UNSAFE_CODE
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#if defined(__SSE3__)
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vaddeq(*((__m128d *)c1),_mm_hadd_pd(a,b));
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vaddeq(*((__m128d *)c2),_mm_hadd_pd(c,d));
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#else
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vaddeq(*((__m128d *)c1),vadd(_mm_shuffle_pd(a,b,_MM_SHUFFLE2(0,1)),
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_mm_shuffle_pd(a,b,_MM_SHUFFLE2(1,0))));
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vaddeq(*((__m128d *)c2),vadd(_mm_shuffle_pd(c,d,_MM_SHUFFLE2(0,1)),
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_mm_shuffle_pd(c,d,_MM_SHUFFLE2(1,0))));
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#endif
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#else
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union {Tv v; complex double c; } u1, u2;
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#if defined(__SSE3__)
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u1.v = _mm_hadd_pd(a,b); u2.v=_mm_hadd_pd(c,d);
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#else
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u1.v = vadd(_mm_shuffle_pd(a,b,_MM_SHUFFLE2(0,1)),
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_mm_shuffle_pd(a,b,_MM_SHUFFLE2(1,0)));
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u2.v = vadd(_mm_shuffle_pd(c,d,_MM_SHUFFLE2(0,1)),
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_mm_shuffle_pd(c,d,_MM_SHUFFLE2(1,0)));
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#endif
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*c1+=u1.c; *c2+=u2.c;
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#endif
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}
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#endif
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#if (VLEN==4)
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static inline complex double vhsum_cmplx (Tv a, Tv b)
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{
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Tv tmp=_mm256_hadd_pd(a,b);
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Tv tmp2=_mm256_permute2f128_pd(tmp,tmp,1);
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tmp=_mm256_add_pd(tmp,tmp2);
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#ifdef UNSAFE_CODE
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complex double ret;
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*((__m128d *)&ret)=_mm256_extractf128_pd(tmp, 0);
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return ret;
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#else
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union {Tv v; complex double c[2]; } u;
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u.v=tmp; return u.c[0];
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#endif
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}
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static inline void vhsum_cmplx2 (Tv a, Tv b, Tv c, Tv d,
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complex double * restrict c1, complex double * restrict c2)
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{
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Tv tmp1=_mm256_hadd_pd(a,b), tmp2=_mm256_hadd_pd(c,d);
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Tv tmp3=_mm256_permute2f128_pd(tmp1,tmp2,49),
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tmp4=_mm256_permute2f128_pd(tmp1,tmp2,32);
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tmp1=vadd(tmp3,tmp4);
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#ifdef UNSAFE_CODE
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*((__m128d *)c1)=_mm_add_pd(*((__m128d *)c1),_mm256_extractf128_pd(tmp1, 0));
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*((__m128d *)c2)=_mm_add_pd(*((__m128d *)c2),_mm256_extractf128_pd(tmp1, 1));
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#else
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union {Tv v; complex double c[2]; } u;
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u.v=tmp1;
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*c1+=u.c[0]; *c2+=u.c[1];
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#endif
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}
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#endif
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#endif
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