ex02m_dense_matrix_algebra_vmult.cpp

 
#include <iostream>
#include <cla3p/dense.hpp>
#include <cla3p/algebra.hpp>
 
int main()
{
    cla3p::dns::RdMatrix A(3, 3);
    cla3p::dns::RdVector x(3);
 
    A = 3.;
    x = 2.;
    std::cout << "A:\n" << A;
    std::cout << "x:\n" << x << "\n";
 
    /*
     * Perform the operation (A * x) using operators and the mult function respectively
     */
    cla3p::dns::RdVector y1 = A * x;
    std::cout << "y1:\n" << y1;
 
    cla3p::dns::RdVector y2(3);
    cla3p::ops::mult(1., cla3p::op_t::N, A, x, 0., y2);
    std::cout << "y2:\n" << y2 << "\n";
 
    /*
     * Perform the operation (y1 += A * x) using operators and the mult function respectively
     */
    y1 += A * x;
    std::cout << "y1:\n" << y1;
 
    cla3p::ops::mult(1., cla3p::op_t::N, A, x, 1., y2);
    std::cout << "y2:\n" << y2;
 
    return 0;
}