mirror of
https://github.com/triqs/dft_tools
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96 lines
2.7 KiB
C++
96 lines
2.7 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/blas_lapack/gemm.hpp>
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#include <triqs/arrays/blas_lapack/gemv.hpp>
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#include <triqs/arrays/blas_lapack/ger.hpp>
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#include <triqs/arrays/blas_lapack/axpy.hpp>
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#include <iostream>
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using namespace triqs::arrays;
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int main(int argc, char **argv) {
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typedef std::complex<double> T;
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triqs::arrays::vector<T> V(5),V2(5);
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for (int i =0; i<5; ++i) {V(i) = i; V2(i) = -1;}
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std::cout<<"V = "<<V<<std::endl;
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std::cout<<"V2 = "<<V2<<std::endl;
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std::cout <<"starting blas test"<<std::endl;
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blas::axpy(2.0,V,V2);
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std::cout<<"V = "<<V<<std::endl;
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std::cout<<"V2 = "<<V2<<std::endl;
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triqs::arrays::vector <double> V3(2);
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for (int i =0; i<2; ++i) {V3(i) = i+1;}
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triqs::arrays::matrix<double> M1(2,2,FORTRAN_LAYOUT), M2(2,2,FORTRAN_LAYOUT), M3(2,2,FORTRAN_LAYOUT);
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for (int i =0; i<2; ++i)
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for (int j=0; j<2; ++j)
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{ M1(i,j) = i+j; M2(i,j) = 1; M3(i,j)=0;}
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// try to multiply
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blas::gemm(1.0,M1, M2, 1.0, M3);
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std::cout<<"M1 = "<<M1<<std::endl;
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std::cout<<"M2 = "<<M2<<std::endl;
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std::cout<<"M3 = "<<M3<<std::endl;
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triqs::arrays::matrix<double> Mc1(2,2), Mc2(2,2), Mc3(2,2);
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for (int i =0; i<2; ++i)
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for (int j=0; j<2; ++j)
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{ Mc1(i,j) = i+j; Mc2(i,j) = 1; Mc3(i,j)=0;}
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// try to multiply
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blas::gemm(1.0,Mc1, Mc2, 1.0, Mc3);
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std::cout<<"Mc1 = "<<Mc1<<std::endl;
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std::cout<<"Mc2 = "<<Mc2<<std::endl;
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std::cout<<"Mc3 = "<<Mc3<<std::endl;
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std::cout<<"V3 = "<<V3<<std::endl;
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blas::ger(1.0,V3,V3,M2);
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std::cout<<"M2 = "<<M2<<std::endl;
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// try to invert
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triqs::arrays::vector <int> ipiv(2);
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lapack::getrf(M1, ipiv);
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lapack::getri(M1, ipiv);
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std::cout<<"inv M1 = "<<M1<<std::endl;
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}
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