mirror of
https://github.com/triqs/dft_tools
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19 lines
526 B
C++
19 lines
526 B
C++
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#include <triqs/arrays.hpp>
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using namespace triqs;
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int main() {
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// declare and init a matrix
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clef::placeholder<0> i_;
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clef::placeholder<1> j_;
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arrays::matrix<int> A(2, 2);
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A(i_, j_) << i_ + j_;
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// the mapped function
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auto F = arrays::map([](int i) { return i * 2.5; });
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std::cout << "A = " << A << std::endl;
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std::cout << "F(A) = " << F(A) << std::endl; // oops no computation done
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std::cout << "F(A) = " << make_matrix(F(A)) << std::endl;
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std::cout << "3*F(2*A) = " << make_matrix(3 * F(2 * A)) << std::endl;
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}
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