mirror of
https://github.com/triqs/dft_tools
synced 2024-12-26 14:23:38 +01:00
58 lines
2.0 KiB
C++
58 lines
2.0 KiB
C++
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/*******************************************************************************
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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 "./src/functional/map.hpp"
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#include "./src/matrix.hpp"
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#include <iostream>
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#include <algorithm>
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using std::cout; using std::endl;
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using namespace triqs::arrays;
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template<class T> T mmax(T const & x, T const & y) { return std::max(x,y);}
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int main(int argc, char **argv) {
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triqs::arrays::matrix<double> A(3,3, FORTRAN_LAYOUT),B(3,3, FORTRAN_LAYOUT);
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A() = -2;
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for (int i =0; i<3; ++i)
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for (int j=0; j<3; ++j)
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{ A(i,j) = i+2*j+1; B(i,j) = i-j;}
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auto Abs = map( std::function< double (double)> ( static_cast< double (*)(double)> (std::abs)) );
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auto Max = map2( std::function<double(double,double)>(mmax<double>) );
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auto sqr = map( [](double x){return x*x;});
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std::cout<< " A " << A<<std::endl<<std::endl;
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std::cout<< " B " << B<<std::endl<<std::endl;
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std::cerr<< " Sqr(A) " << make_matrix(sqr(A))<<std::endl<<std::endl;
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std::cout<<" abs(B+B) = "<<make_matrix(Abs(B+B)) <<std::endl<<std::endl;
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std::cout<<" A+10*B = "<<make_matrix(A+10*B) <<std::endl<<std::endl;
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std::cout<<" Abs(A+10*B) = "<<make_matrix(Abs(A+10*B)) <<std::endl<<std::endl;
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std::cout<<" Max(A,10*B)"<< make_matrix(Max(A,10*B))<<std::endl<<std::endl;
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return 0;
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}
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