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231 lines
7.2 KiB
C++
231 lines
7.2 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/lattice/Lattice_comparison_utils.h
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Copyright (C) 2015
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Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
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Author: Peter Boyle <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 directory
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*************************************************************************************/
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/* END LEGAL */
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#ifndef GRID_COMPARISON_H
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#define GRID_COMPARISON_H
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namespace Grid {
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/////////////////////////////////////////
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// This implementation is a bit poor.
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//
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// Only support relational logical operations (<, > etc)
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// on scalar objects. Therefore can strip any tensor structures.
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//
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// Should guard this with isGridTensor<> enable if?
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/////////////////////////////////////////
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//
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// Generic list of functors
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//
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template<class lobj,class robj> class veq {
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public:
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vInteger operator()(const lobj &lhs, const robj &rhs)
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{
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return (lhs) == (rhs);
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}
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};
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template<class lobj,class robj> class vne {
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public:
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vInteger operator()(const lobj &lhs, const robj &rhs)
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{
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return (lhs) != (rhs);
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}
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};
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template<class lobj,class robj> class vlt {
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public:
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vInteger operator()(const lobj &lhs, const robj &rhs)
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{
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return (lhs) < (rhs);
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}
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};
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template<class lobj,class robj> class vle {
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public:
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vInteger operator()(const lobj &lhs, const robj &rhs)
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{
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return (lhs) <= (rhs);
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}
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};
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template<class lobj,class robj> class vgt {
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public:
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vInteger operator()(const lobj &lhs, const robj &rhs)
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{
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return (lhs) > (rhs);
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}
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};
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template<class lobj,class robj> class vge {
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public:
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vInteger operator()(const lobj &lhs, const robj &rhs)
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{
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return (lhs) >= (rhs);
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}
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};
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// Generic list of functors
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template<class lobj,class robj> class seq {
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public:
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Integer operator()(const lobj &lhs, const robj &rhs)
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{
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return (lhs) == (rhs);
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}
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};
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template<class lobj,class robj> class sne {
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public:
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Integer operator()(const lobj &lhs, const robj &rhs)
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{
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return (lhs) != (rhs);
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}
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};
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template<class lobj,class robj> class slt {
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public:
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Integer operator()(const lobj &lhs, const robj &rhs)
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{
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return (lhs) < (rhs);
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}
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};
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template<class lobj,class robj> class sle {
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public:
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Integer operator()(const lobj &lhs, const robj &rhs)
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{
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return (lhs) <= (rhs);
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}
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};
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template<class lobj,class robj> class sgt {
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public:
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Integer operator()(const lobj &lhs, const robj &rhs)
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{
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return (lhs) > (rhs);
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}
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};
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template<class lobj,class robj> class sge {
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public:
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Integer operator()(const lobj &lhs, const robj &rhs)
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{
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return (lhs) >= (rhs);
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}
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};
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//////////////////////////////////////////////////////////////////////////////////////////////////////
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// Integer and real get extra relational functions.
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//////////////////////////////////////////////////////////////////////////////////////////////////////
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template<class sfunctor, class vsimd,IfNotComplex<vsimd> = 0>
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inline vInteger Comparison(sfunctor sop,const vsimd & lhs, const vsimd & rhs)
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{
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typedef typename vsimd::scalar_type scalar;
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std::vector<scalar> vlhs(vsimd::Nsimd()); // Use functors to reduce this to single implementation
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std::vector<scalar> vrhs(vsimd::Nsimd());
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std::vector<Integer> vpred(vsimd::Nsimd());
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vInteger ret;
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extract<vsimd,scalar>(lhs,vlhs);
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extract<vsimd,scalar>(rhs,vrhs);
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for(int s=0;s<vsimd::Nsimd();s++){
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vpred[s] = sop(vlhs[s],vrhs[s]);
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}
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merge<vInteger,Integer>(ret,vpred);
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return ret;
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}
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template<class sfunctor, class vsimd,IfNotComplex<vsimd> = 0>
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inline vInteger Comparison(sfunctor sop,const vsimd & lhs, const typename vsimd::scalar_type & rhs)
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{
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typedef typename vsimd::scalar_type scalar;
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std::vector<scalar> vlhs(vsimd::Nsimd()); // Use functors to reduce this to single implementation
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std::vector<Integer> vpred(vsimd::Nsimd());
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vInteger ret;
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extract<vsimd,scalar>(lhs,vlhs);
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for(int s=0;s<vsimd::Nsimd();s++){
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vpred[s] = sop(vlhs[s],rhs);
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}
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merge<vInteger,Integer>(ret,vpred);
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return ret;
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}
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template<class sfunctor, class vsimd,IfNotComplex<vsimd> = 0>
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inline vInteger Comparison(sfunctor sop,const typename vsimd::scalar_type & lhs, const vsimd & rhs)
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{
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typedef typename vsimd::scalar_type scalar;
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std::vector<scalar> vrhs(vsimd::Nsimd()); // Use functors to reduce this to single implementation
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std::vector<Integer> vpred(vsimd::Nsimd());
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vInteger ret;
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extract<vsimd,scalar>(rhs,vrhs);
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for(int s=0;s<vsimd::Nsimd();s++){
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vpred[s] = sop(lhs,vrhs[s]);
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}
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merge<vInteger,Integer>(ret,vpred);
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return ret;
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}
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#define DECLARE_RELATIONAL(op,functor) \
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template<class vsimd,IfSimd<vsimd> = 0>\
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inline vInteger operator op (const vsimd & lhs, const vsimd & rhs)\
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{\
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typedef typename vsimd::scalar_type scalar;\
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return Comparison(functor<scalar,scalar>(),lhs,rhs);\
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}\
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template<class vsimd,IfSimd<vsimd> = 0>\
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inline vInteger operator op (const vsimd & lhs, const typename vsimd::scalar_type & rhs) \
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{\
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typedef typename vsimd::scalar_type scalar;\
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return Comparison(functor<scalar,scalar>(),lhs,rhs);\
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}\
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template<class vsimd,IfSimd<vsimd> = 0>\
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inline vInteger operator op (const typename vsimd::scalar_type & lhs, const vsimd & rhs) \
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{\
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typedef typename vsimd::scalar_type scalar;\
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return Comparison(functor<scalar,scalar>(),lhs,rhs);\
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}\
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template<class vsimd>\
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inline vInteger operator op(const iScalar<vsimd> &lhs,const iScalar<vsimd> &rhs)\
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{ \
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return lhs._internal op rhs._internal; \
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} \
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template<class vsimd>\
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inline vInteger operator op(const iScalar<vsimd> &lhs,const typename vsimd::scalar_type &rhs) \
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{ \
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return lhs._internal op rhs; \
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} \
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template<class vsimd>\
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inline vInteger operator op(const typename vsimd::scalar_type &lhs,const iScalar<vsimd> &rhs) \
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{ \
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return lhs op rhs._internal; \
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}
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DECLARE_RELATIONAL(<,slt);
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DECLARE_RELATIONAL(<=,sle);
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DECLARE_RELATIONAL(>,sgt);
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DECLARE_RELATIONAL(>=,sge);
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DECLARE_RELATIONAL(==,seq);
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DECLARE_RELATIONAL(!=,sne);
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#undef DECLARE_RELATIONAL
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}
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#endif
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