112 lines
3 KiB
C
112 lines
3 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) 2012-2018 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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#include <math.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 void vhsum_cmplx_special (Tv a, Tv b, Tv c, Tv d,
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_Complex double * restrict cc)
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{ cc[0] += a+_Complex_I*b; cc[1] += c+_Complex_I*d; }
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#endif
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#if (VLEN==2)
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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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*((__m128d *)c1) += _mm_hadd_pd(a,b);
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*((__m128d *)c2) += _mm_hadd_pd(c,d);
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#else
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*((__m128d *)c1) += _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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*((__m128d *)c2) += _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 = _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 = _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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static inline void vhsum_cmplx_special (Tv a, Tv b, Tv c, Tv d,
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_Complex double * restrict cc)
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{ vhsum_cmplx2(a,b,c,d,cc,cc+1); }
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#endif
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#if (VLEN==4)
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static inline void vhsum_cmplx_special (Tv a, Tv b, Tv c, Tv d,
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_Complex double * restrict cc)
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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=tmp3+tmp4;
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#ifdef UNSAFE_CODE
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_mm256_storeu_pd((double *)cc,
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_mm256_add_pd(_mm256_loadu_pd((double *)cc),tmp1));
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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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cc[0]+=u.c[0]; cc[1]+=u.c[1];
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#endif
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}
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#endif
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#if (VLEN==8)
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static inline void vhsum_cmplx_special (Tv a, Tv b, Tv c, Tv d,
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_Complex double * restrict cc)
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{ vhsum_cmplx2(a,b,c,d,cc,cc+1); }
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#endif
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#endif
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