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Merge branch 'develop' into feature/gpu-port

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Peter Boyle
2018-12-13 05:11:34 +00:00
parent adbdc4e65b c509bd3fe2
commit b57a4d32aa
647 changed files with 49155 additions and 11160 deletions
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Grid/tensors/Tensor_trace.h Normal file
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/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./lib/tensors/Tensor_trace.h
Copyright (C) 2015
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_MATH_TRACE_H
#define GRID_MATH_TRACE_H
NAMESPACE_BEGIN(Grid);
//////////////////////////////////////////////////////////////////
// Traces: both all indices and a specific index. Indices must be
// either scalar or matrix
/////////////////////////////////////////////////////////////////
accelerator_inline ComplexF trace( const ComplexF &arg){ return arg;}
accelerator_inline ComplexD trace( const ComplexD &arg){ return arg;}
accelerator_inline RealF trace( const RealF &arg){ return arg;}
accelerator_inline RealD trace( const RealD &arg){ return arg;}
template<class vtype,int N>
accelerator_inline auto trace(const iMatrix<vtype,N> &arg) -> iScalar<decltype(trace(arg._internal[0][0]))>
{
iScalar<decltype( trace(arg._internal[0][0] )) > ret;
zeroit(ret._internal);
for(int i=0;i<N;i++){
ret._internal=ret._internal+trace(arg._internal[i][i]);
}
return ret;
}
template<class vtype>
accelerator_inline auto trace(const iScalar<vtype> &arg) -> iScalar<decltype(trace(arg._internal))>
{
iScalar<decltype(trace(arg._internal))> ret;
ret._internal=trace(arg._internal);
return ret;
}
template<class vtype,int N>
accelerator_inline auto trace(const iVector<vtype,N> &arg) -> iVector<decltype(trace(arg._internal[0])),N>
{
iVector<decltype(trace(arg._internal[0])),N> ret;
for(int i=0;i<N;i++){
ret._internal[i]=trace(arg._internal[i]);
}
return ret;
}
NAMESPACE_END(Grid);
#endif