mirror of
https://github.com/triqs/dft_tools
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92 lines
2.9 KiB
C++
92 lines
2.9 KiB
C++
/*******************************************************************************
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*
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* TRIQS: a Toolbox for Research in Interacting Quantum Systems
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*
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* Copyright (C) 2011 by O. Parcollet
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*
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* TRIQS is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* TRIQS. If not, see <http://www.gnu.org/licenses/>.
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*
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******************************************************************************/
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#include "./common.hpp"
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#include <triqs/arrays/array.hpp>
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#include <triqs/arrays/vector.hpp>
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#include <triqs/arrays/matrix.hpp>
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#include <triqs/arrays/linalg/det_and_inverse.hpp>
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#include <triqs/arrays/linalg/det_and_inverse.hpp>
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#include <iostream>
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using std::cout; using std::endl;
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using namespace triqs::arrays;
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int main(int argc, char **argv) {
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triqs::arrays::matrix<double> A(5,5, FORTRAN_LAYOUT);
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triqs::arrays::matrix<double> Ac(5,5);
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typedef triqs::arrays::vector<double> vector_type;
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vector_type MC(5), MB(5);
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for (int i =0; i<5; ++i)
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for (int j=0; j<5; ++j)
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A(i,j) = i+2*j+1;
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Ac = A;
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MC() = 1;MB()=0;
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range R(1,3);
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std::cout<< "A = "<< A<< std::endl<<std::endl;
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//MB(R) = 2* mat_vec_mul(A(R,R),MC(R));
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MB(R) = A(R,R) * MC(R) ;
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std::cout<< "A(R,R) = "<< A(R,R)<< std::endl<<std::endl;
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std::cout<<" MC(R) = "<<MC(R)<< std::endl<<std::endl;
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std::cout<<" MB = "<< A(R,R) * MC(R) <<" = "<<MB<< std::endl<<std::endl;
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std::cout<<"testing infix"<<std::endl<<std::endl;
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//MB(R) += mat_vec_mul(A(R,R),MC(R));
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MB(R) += A(R,R) * MC(R);
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std::cout<< "A = "<< A(R,R)<< std::endl<<std::endl;
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std::cout<<" MC = "<<MC<< std::endl<<std::endl;
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std::cout<<" MB(R) += A(R,R) * MC(R) = "<<MB<< std::endl<<std::endl;
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std::cout<<" explicit blas call"<<std::endl<<std::endl;
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triqs::arrays::matrix_view<double > Acw = A.transpose();
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vector_type::view_type MB_w(MB(R));
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std::cout<<" MC = "<<MC<< std::endl<<std::endl;
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blas::gemv(1,A(R,R), MC(R), 0, MB_w);
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std::cout<< "A = "<< A(R,R)<< std::endl<<std::endl;
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std::cout<<" MB = "<<MB<< std::endl<<std::endl;
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blas::gemv(1,Ac(R,R), MC(R), 0, MB_w);
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std::cout<< "A = "<< Ac(R,R)<< std::endl<<std::endl;
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std::cout<<" MB = "<<MB<< std::endl<<std::endl;
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blas::gemv(1,Acw(R,R), MC(R), 0, MB_w);
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std::cout<< "A = "<< Acw(R,R)<< std::endl<<std::endl;
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std::cout<<" MB = "<<MB<< std::endl<<std::endl;
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//std::cout<< A(R,R) * A(R,R) << " = " << triqs::arrays::matrix<double,Option::Fortran > (A(R,R) * A(R,R)) <<std::endl<<std::endl;
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}
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