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72 lines
2.9 KiB
C++
72 lines
2.9 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/algorithms/SparseMatrix.h
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Copyright (C) 2015
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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_ALGORITHM_SPARSE_MATRIX_H
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#define GRID_ALGORITHM_SPARSE_MATRIX_H
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namespace Grid {
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/////////////////////////////////////////////////////////////////////////////////////////////
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// Interface defining what I expect of a general sparse matrix, such as a Fermion action
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/////////////////////////////////////////////////////////////////////////////////////////////
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template<class Field> class SparseMatrixBase {
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public:
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virtual GridBase *Grid(void) =0;
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// Full checkerboar operations
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virtual RealD M (const Field &in, Field &out)=0;
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virtual RealD Mdag (const Field &in, Field &out)=0;
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virtual void MdagM(const Field &in, Field &out,RealD &ni,RealD &no) {
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Field tmp (in._grid);
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ni=M(in,tmp);
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no=Mdag(tmp,out);
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}
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virtual void Mdiag (const Field &in, Field &out)=0;
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virtual void Mdir (const Field &in, Field &out,int dir, int disp)=0;
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};
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/////////////////////////////////////////////////////////////////////////////////////////////
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// Interface augmented by a red black sparse matrix, such as a Fermion action
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/////////////////////////////////////////////////////////////////////////////////////////////
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template<class Field> class CheckerBoardedSparseMatrixBase : public SparseMatrixBase<Field> {
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public:
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virtual GridBase *RedBlackGrid(void)=0;
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// half checkerboard operaions
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virtual void Meooe (const Field &in, Field &out)=0;
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virtual void Mooee (const Field &in, Field &out)=0;
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virtual void MooeeInv (const Field &in, Field &out)=0;
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virtual void MeooeDag (const Field &in, Field &out)=0;
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virtual void MooeeDag (const Field &in, Field &out)=0;
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virtual void MooeeInvDag (const Field &in, Field &out)=0;
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};
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}
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#endif
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