mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-16 02:35:36 +00:00
87 lines
2.9 KiB
C++
87 lines
2.9 KiB
C++
/*************************************************************************************
|
|
|
|
Grid physics library, www.github.com/paboyle/Grid
|
|
|
|
Source file: ./lib/lattice/Lattice_where.h
|
|
|
|
Copyright (C) 2015
|
|
|
|
Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
|
|
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
|
|
Author: Peter Boyle <peterboyle@Peters-MacBook-Pro-2.local>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along
|
|
with this program; if not, write to the Free Software Foundation, Inc.,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
See the full license in the file "LICENSE" in the top level distribution directory
|
|
*************************************************************************************/
|
|
/* END LEGAL */
|
|
#ifndef GRID_LATTICE_WHERE_H
|
|
#define GRID_LATTICE_WHERE_H
|
|
namespace Grid {
|
|
// Must implement the predicate gating the
|
|
// Must be able to reduce the predicate down to a single vInteger per site.
|
|
// Must be able to require the type be iScalar x iScalar x ....
|
|
// give a GetVtype method in iScalar
|
|
// and blow away the tensor structures.
|
|
//
|
|
template<class vobj,class iobj>
|
|
inline void whereWolf(Lattice<vobj> &ret,const Lattice<iobj> &predicate,Lattice<vobj> &iftrue,Lattice<vobj> &iffalse)
|
|
{
|
|
conformable(iftrue,iffalse);
|
|
conformable(iftrue,predicate);
|
|
conformable(iftrue,ret);
|
|
|
|
GridBase *grid=iftrue._grid;
|
|
|
|
typedef typename vobj::scalar_object scalar_object;
|
|
typedef typename vobj::scalar_type scalar_type;
|
|
typedef typename vobj::vector_type vector_type;
|
|
typedef typename iobj::vector_type mask_type;
|
|
|
|
const int Nsimd = grid->Nsimd();
|
|
|
|
std::vector<Integer> mask(Nsimd);
|
|
std::vector<scalar_object> truevals (Nsimd);
|
|
std::vector<scalar_object> falsevals(Nsimd);
|
|
|
|
parallel_for(int ss=0;ss<iftrue._grid->oSites(); ss++){
|
|
|
|
extract(iftrue._odata[ss] ,truevals);
|
|
extract(iffalse._odata[ss] ,falsevals);
|
|
extract<vInteger,Integer>(TensorRemove(predicate._odata[ss]),mask);
|
|
|
|
for(int s=0;s<Nsimd;s++){
|
|
if (mask[s]) falsevals[s]=truevals[s];
|
|
}
|
|
|
|
merge(ret._odata[ss],falsevals);
|
|
}
|
|
}
|
|
|
|
template<class vobj,class iobj>
|
|
inline Lattice<vobj> whereWolf(const Lattice<iobj> &predicate,Lattice<vobj> &iftrue,Lattice<vobj> &iffalse)
|
|
{
|
|
conformable(iftrue,iffalse);
|
|
conformable(iftrue,predicate);
|
|
|
|
Lattice<vobj> ret(iftrue._grid);
|
|
|
|
where(ret,predicate,iftrue,iffalse);
|
|
|
|
return ret;
|
|
}
|
|
}
|
|
#endif
|