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256 lines
10 KiB
C++
256 lines
10 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/Simd.h
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Copyright (C) 2015
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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Author: neo <cossu@post.kek.jp>
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Author: paboyle <paboyle@ph.ed.ac.uk>
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This program 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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This program 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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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution
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directory
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*************************************************************************************/
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/* END LEGAL */
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#ifndef GRID_SIMD_H
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#define GRID_SIMD_H
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////////////////////////////////////////////////////////////////////////
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// Define scalar and vector floating point types
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//
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// Scalar: RealF, RealD, ComplexF, ComplexD
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//
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// Vector: vRealF, vRealD, vComplexF, vComplexD
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//
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// Vector types are arch dependent
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////////////////////////////////////////////////////////////////////////
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#define _MM_SELECT_FOUR_FOUR(A,B,C,D) ((A<<6)|(B<<4)|(C<<2)|(D))
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#define _MM_SELECT_FOUR_FOUR_STRING(A,B,C,D) "((" #A "<<6)|(" #B "<<4)|(" #C "<<2)|(" #D "))"
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#define _MM_SELECT_EIGHT_TWO(A,B,C,D,E,F,G,H) ((A<<7)|(B<<6)|(C<<5)|(D<<4)|(E<<3)|(F<<2)|(G<<4)|(H))
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#define _MM_SELECT_FOUR_TWO (A,B,C,D) _MM_SELECT_EIGHT_TWO(0,0,0,0,A,B,C,D)
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#define _MM_SELECT_TWO_TWO (A,B) _MM_SELECT_FOUR_TWO(0,0,A,B)
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#define RotateBit (0x100)
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namespace Grid {
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typedef uint32_t Integer;
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typedef float RealF;
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typedef double RealD;
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#ifdef GRID_DEFAULT_PRECISION_DOUBLE
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typedef RealD Real;
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#else
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typedef RealF Real;
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#endif
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typedef std::complex<RealF> ComplexF;
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typedef std::complex<RealD> ComplexD;
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typedef std::complex<Real> Complex;
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inline RealF adj(const RealF & r){ return r; }
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inline RealF conjugate(const RealF & r){ return r; }
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inline RealF real(const RealF & r){ return r; }
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inline RealD adj(const RealD & r){ return r; }
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inline RealD conjugate(const RealD & r){ return r; }
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inline RealD real(const RealD & r){ return r; }
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inline RealD sqrt(const RealD & r){ return std::sqrt(r); }
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inline ComplexD conjugate(const ComplexD& r){ return(conj(r)); }
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inline ComplexD adj(const ComplexD& r){ return(conjugate(r)); }
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inline ComplexF conjugate(const ComplexF& r ){ return(conj(r)); }
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inline ComplexF adj(const ComplexF& r ){ return(conjugate(r)); }
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inline ComplexD innerProduct(const ComplexD & l, const ComplexD & r) { return conjugate(l)*r; }
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inline ComplexF innerProduct(const ComplexF & l, const ComplexF & r) { return conjugate(l)*r; }
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inline RealD innerProduct(const RealD & l, const RealD & r) { return l*r; }
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inline RealF innerProduct(const RealF & l, const RealF & r) { return l*r; }
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inline ComplexD Reduce(const ComplexD& r){ return r; }
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inline ComplexF Reduce(const ComplexF& r){ return r; }
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inline RealD Reduce(const RealD& r){ return r; }
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inline RealF Reduce(const RealF& r){ return r; }
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inline RealD toReal(const ComplexD& r){ return real(r); }
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inline RealF toReal(const ComplexF& r){ return real(r); }
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inline RealD toReal(const RealD& r){ return r; }
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inline RealF toReal(const RealF& r){ return r; }
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////////////////////////////////////////////////////////////////////////////////
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//Provide support functions for basic real and complex data types required by Grid
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//Single and double precision versions. Should be able to template this once only.
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////////////////////////////////////////////////////////////////////////////////
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inline void mac (ComplexD * __restrict__ y,const ComplexD * __restrict__ a,const ComplexD *__restrict__ x){ *y = (*a) * (*x)+(*y); };
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inline void mult(ComplexD * __restrict__ y,const ComplexD * __restrict__ l,const ComplexD *__restrict__ r){ *y = (*l) * (*r);}
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inline void sub (ComplexD * __restrict__ y,const ComplexD * __restrict__ l,const ComplexD *__restrict__ r){ *y = (*l) - (*r);}
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inline void add (ComplexD * __restrict__ y,const ComplexD * __restrict__ l,const ComplexD *__restrict__ r){ *y = (*l) + (*r);}
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// conjugate already supported for complex
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inline void mac (ComplexF * __restrict__ y,const ComplexF * __restrict__ a,const ComplexF *__restrict__ x){ *y = (*a) * (*x)+(*y); }
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inline void mult(ComplexF * __restrict__ y,const ComplexF * __restrict__ l,const ComplexF *__restrict__ r){ *y = (*l) * (*r); }
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inline void sub (ComplexF * __restrict__ y,const ComplexF * __restrict__ l,const ComplexF *__restrict__ r){ *y = (*l) - (*r); }
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inline void add (ComplexF * __restrict__ y,const ComplexF * __restrict__ l,const ComplexF *__restrict__ r){ *y = (*l) + (*r); }
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//conjugate already supported for complex
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inline ComplexF timesI(const ComplexF &r) { return(r*ComplexF(0.0,1.0));}
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inline ComplexD timesI(const ComplexD &r) { return(r*ComplexD(0.0,1.0));}
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inline ComplexF timesMinusI(const ComplexF &r){ return(r*ComplexF(0.0,-1.0));}
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inline ComplexD timesMinusI(const ComplexD &r){ return(r*ComplexD(0.0,-1.0));}
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// define projections to real and imaginay parts
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inline ComplexF projReal(const ComplexF &r){return( ComplexF(std::real(r), 0.0));}
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inline ComplexD projReal(const ComplexD &r){return( ComplexD(std::real(r), 0.0));}
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inline ComplexF projImag(const ComplexF &r){return (ComplexF(std::imag(r), 0.0 ));}
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inline ComplexD projImag(const ComplexD &r){return (ComplexD(std::imag(r), 0.0));}
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// define auxiliary functions for complex computations
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inline void timesI(ComplexF &ret,const ComplexF &r) { ret = timesI(r);}
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inline void timesI(ComplexD &ret,const ComplexD &r) { ret = timesI(r);}
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inline void timesMinusI(ComplexF &ret,const ComplexF &r){ ret = timesMinusI(r);}
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inline void timesMinusI(ComplexD &ret,const ComplexD &r){ ret = timesMinusI(r);}
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inline void mac (RealD * __restrict__ y,const RealD * __restrict__ a,const RealD *__restrict__ x){ *y = (*a) * (*x)+(*y);}
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inline void mult(RealD * __restrict__ y,const RealD * __restrict__ l,const RealD *__restrict__ r){ *y = (*l) * (*r);}
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inline void sub (RealD * __restrict__ y,const RealD * __restrict__ l,const RealD *__restrict__ r){ *y = (*l) - (*r);}
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inline void add (RealD * __restrict__ y,const RealD * __restrict__ l,const RealD *__restrict__ r){ *y = (*l) + (*r);}
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inline void mac (RealF * __restrict__ y,const RealF * __restrict__ a,const RealF *__restrict__ x){ *y = (*a) * (*x)+(*y); }
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inline void mult(RealF * __restrict__ y,const RealF * __restrict__ l,const RealF *__restrict__ r){ *y = (*l) * (*r); }
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inline void sub (RealF * __restrict__ y,const RealF * __restrict__ l,const RealF *__restrict__ r){ *y = (*l) - (*r); }
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inline void add (RealF * __restrict__ y,const RealF * __restrict__ l,const RealF *__restrict__ r){ *y = (*l) + (*r); }
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inline void vstream(ComplexF &l, const ComplexF &r){ l=r;}
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inline void vstream(ComplexD &l, const ComplexD &r){ l=r;}
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inline void vstream(RealF &l, const RealF &r){ l=r;}
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inline void vstream(RealD &l, const RealD &r){ l=r;}
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class Zero{};
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static Zero zero;
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template<class itype> inline void zeroit(itype &arg){ arg=zero;};
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template<> inline void zeroit(ComplexF &arg){ arg=0; };
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template<> inline void zeroit(ComplexD &arg){ arg=0; };
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template<> inline void zeroit(RealF &arg){ arg=0; };
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template<> inline void zeroit(RealD &arg){ arg=0; };
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//////////////////////////////////////////////////////////
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// Permute
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// Permute 0 every ABCDEFGH -> BA DC FE HG
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// Permute 1 every ABCDEFGH -> CD AB GH EF
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// Permute 2 every ABCDEFGH -> EFGH ABCD
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// Permute 3 possible on longer iVector lengths (512bit = 8 double = 16 single)
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// Permute 4 possible on half precision @512bit vectors.
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//
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// Defined inside SIMD specialization files
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//////////////////////////////////////////////////////////
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template<class VectorSIMD>
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inline void Gpermute(VectorSIMD &y,const VectorSIMD &b,int perm);
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};
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#include "simd/Grid_vector_types.h"
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#include "simd/Grid_vector_unops.h"
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namespace Grid {
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// Default precision
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#ifdef GRID_DEFAULT_PRECISION_DOUBLE
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typedef vRealD vReal;
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typedef vComplexD vComplex;
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#else
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typedef vRealF vReal;
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typedef vComplexF vComplex;
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#endif
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inline std::ostream& operator<< (std::ostream& stream, const vComplexF &o){
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int nn=vComplexF::Nsimd();
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std::vector<ComplexF,alignedAllocator<ComplexF> > buf(nn);
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vstore(o,&buf[0]);
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stream<<"<";
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for(int i=0;i<nn;i++){
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stream<<buf[i];
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if(i<nn-1) stream<<",";
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}
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stream<<">";
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return stream;
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}
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inline std::ostream& operator<< (std::ostream& stream, const vComplexD &o){
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int nn=vComplexD::Nsimd();
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std::vector<ComplexD,alignedAllocator<ComplexD> > buf(nn);
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vstore(o,&buf[0]);
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stream<<"<";
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for(int i=0;i<nn;i++){
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stream<<buf[i];
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if(i<nn-1) stream<<",";
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}
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stream<<">";
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return stream;
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}
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inline std::ostream& operator<< (std::ostream& stream, const vRealF &o){
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int nn=vRealF::Nsimd();
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std::vector<RealF,alignedAllocator<RealF> > buf(nn);
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vstore(o,&buf[0]);
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stream<<"<";
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for(int i=0;i<nn;i++){
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stream<<buf[i];
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if(i<nn-1) stream<<",";
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}
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stream<<">";
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return stream;
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}
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inline std::ostream& operator<< (std::ostream& stream, const vRealD &o){
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int nn=vRealD::Nsimd();
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std::vector<RealD,alignedAllocator<RealD> > buf(nn);
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vstore(o,&buf[0]);
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stream<<"<";
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for(int i=0;i<nn;i++){
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stream<<buf[i];
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if(i<nn-1) stream<<",";
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}
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stream<<">";
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return stream;
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}
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inline std::ostream& operator<< (std::ostream& stream, const vInteger &o){
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int nn=vInteger::Nsimd();
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std::vector<Integer,alignedAllocator<Integer> > buf(nn);
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vstore(o,&buf[0]);
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stream<<"<";
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for(int i=0;i<nn;i++){
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stream<<buf[i];
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if(i<nn-1) stream<<",";
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}
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stream<<">";
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return stream;
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}
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}
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#endif
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