/*******************************************************************************
 *
 * TRIQS: a Toolbox for Research in Interacting Quantum Systems
 *
 * Copyright (C) 2011 by O. Parcollet
 *
 * TRIQS 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 3 of the License, or (at your option) any later
 * version.
 *
 * TRIQS 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
 * TRIQS. If not, see <http://www.gnu.org/licenses/>.
 *
 ******************************************************************************/
#include "./common.hpp"
#include <triqs/arrays/functional/map.hpp>
#include <triqs/arrays/matrix.hpp>
#include <iostream>
#include <algorithm>

using std::cout; using std::endl;
using namespace triqs::arrays;

template<class T> T mmax(T const & x, T const &  y) { return std::max(x,y);}

int main(int argc, char **argv) {

 

 triqs::arrays::matrix<double> A(3,3, FORTRAN_LAYOUT),B(3,3, FORTRAN_LAYOUT);
 A() = -2;

 for (int i =0; i<3; ++i)
  for (int j=0; j<3; ++j)
  { A(i,j) = i+2*j+1; B(i,j) = i-j;}

 auto Abs = map( std::function< double (double)> ( static_cast< double (*)(double)> (std::abs)) );
 auto Max = map2( std::function<double(double,double)>(mmax<double>) );

 auto sqr = map( [](double x){return x*x;});

 std::cout<< " A " << A<<std::endl<<std::endl;
 std::cout<< " B " << B<<std::endl<<std::endl;
 std::cerr<< " Sqr(A) " << make_matrix(sqr(A))<<std::endl<<std::endl;
 std::cout<<" abs(B+B) = "<<make_matrix(Abs(B+B)) <<std::endl<<std::endl;
 std::cout<<" A+10*B = "<<make_matrix(A+10*B) <<std::endl<<std::endl;
 std::cout<<" Abs(A+10*B) = "<<make_matrix(Abs(A+10*B)) <<std::endl<<std::endl;
 std::cout<<" Max(A,10*B)"<< make_matrix(Max(A,10*B))<<std::endl<<std::endl;
 return 0;
}