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22 lines
677 B
22 lines
677 B
#include <Eigen/Dense>
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#include <iostream>
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using namespace Eigen;
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template <typename Derived1, typename Derived2>
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void copyUpperTriangularPart(MatrixBase<Derived1>& dst, const MatrixBase<Derived2>& src)
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{
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/* Note the 'template' keywords in the following line! */
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dst.template triangularView<Upper>() = src.template triangularView<Upper>();
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}
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int main()
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{
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MatrixXi m1 = MatrixXi::Ones(5,5);
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MatrixXi m2 = MatrixXi::Random(4,4);
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std::cout << "m2 before copy:" << std::endl;
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std::cout << m2 << std::endl << std::endl;
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copyUpperTriangularPart(m2, m1.topLeftCorner(4,4));
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std::cout << "m2 after copy:" << std::endl;
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std::cout << m2 << std::endl << std::endl;
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}
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