ex04b_guard_const_matrix.cpp

 
#include <iostream>
#include <cla3p/dense.hpp>
 
int main()
{
    /*
     * Create a constant matrix
     */
    const cla3p::dns::RdMatrix A = cla3p::dns::RdMatrix::random(5, 5);
 
    /*
     * Get a shallow copy of a block of A using the Guard class
     */
    cla3p::Guard<cla3p::dns::RdMatrix> Agrd22 = A.rblock(1, 2, 2, 2);
 
    /*
     * Get an immutable reference of the block
     */
    const cla3p::dns::RdMatrix& A22 = Agrd22.get();
 
    /*
     * Get info of A22
     */
    std::cout << A22.info("A22") << std::endl;
 
    return 0;
}