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real and imag part not in ET

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Peter Boyle 2020-08-31 23:56:26 -04:00
parent 3d27708f07
commit e21fef17df
1 changed files with 79 additions and 0 deletions
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Grid/lattice/Lattice_real_imag.h Normal file
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/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./lib/lattice/Lattice_reality.h
Copyright (C) 2015
Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
Author: neo <cossu@post.kek.jp>
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_REAL_IMAG_H
#define GRID_LATTICE_REAL_IMAG_H
// FIXME .. this is the sector of the code
// I am most worried about the directions
// The choice of burying complex in the SIMD
// is making the use of "real" and "imag" very cumbersome
NAMESPACE_BEGIN(Grid);
template<class vobj> inline Lattice<vobj> real(const Lattice<vobj> &lhs){
Lattice<vobj> ret(lhs.Grid());
autoView( lhs_v, lhs, AcceleratorRead);
autoView( ret_v, ret, AcceleratorWrite);
ret.Checkerboard()=lhs.Checkerboard();
accelerator_for( ss, lhs_v.size(), 1, {
ret_v[ss] =real(lhs_v[ss]);
});
return ret;
};
template<class vobj> inline Lattice<vobj> imag(const Lattice<vobj> &lhs){
Lattice<vobj> ret(lhs.Grid());
autoView( lhs_v, lhs, AcceleratorRead);
autoView( ret_v, ret, AcceleratorWrite);
ret.Checkerboard()=lhs.Checkerboard();
accelerator_for( ss, lhs_v.size(), 1, {
ret_v[ss] =imag(lhs_v[ss]);
});
return ret;
};
template<class Expression,typename std::enable_if<is_lattice_expr<Expression>::value,void>::type * = nullptr>
auto real(const Expression &expr) -> decltype(real(closure(expr)))
{
return real(closure(expr));
}
template<class Expression,typename std::enable_if<is_lattice_expr<Expression>::value,void>::type * = nullptr>
auto imag(const Expression &expr) -> decltype(imag(closure(expr)))
{
return imag(closure(expr));
}
NAMESPACE_END(Grid);
#endif