mirror of
https://github.com/paboyle/Grid.git
synced 2024-09-20 17:25:37 +01:00
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
#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_LOOP
|
|
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
|