dft_tools/doc/tutorials/array_tutorial_4.cpp

#include <triqs/arrays.hpp>

using triqs::arrays::array;
using triqs::arrays::matrix;
using triqs::arrays::vector;
int main() {
 array<double, 2> A(2, 2), B(2, 2), C;

 A() = 3;
 B() = 1;
 C = A * B;
 std::cout << "A*B = " << C << std::endl;

 matrix<double> D(2, 2), E(2, 2), F;
 E() = 3;
 E() = 1;
 F = D * E;
 std::cout << "C*D = " << F << std::endl;

 vector<double> u(2), v(2), w;
 u() = 1;
 v() = 2;
 w = u + v;

 std::cout << "u+v = " << w << std::endl;
}