matvecprod_operators.cc (flens/examples/matvecprod

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#include <flens/flens.cxx>

#include <iostream>

using namespace flens;

using namespace std;

int

main()

{

    GeMatrix<FullStorage<double> >   A(4,4);

    DenseVector<Array<double> >      x(4), y(4);

    A =  1,  2,  3,  4,

         5,  6,  7,  8,

         9, 10, 11, 12,

        13, 14, 15, 16;

    x =  1,  2,  3,  4;

    cout << "A = " << A << endl;

    cout << "x = " << x << endl;

    cout << "y = " << y << endl;

//

//  compute  y = A*x

//

    y = A*x;

    cout << "y = A*x = " << y << endl;

//

//  compute  y = A^T*x

//

    y = transpose(A)*x;

    cout << "y = A^T*x = " << y << endl;

//

//  compute  y = 1.5*y + A^T*x

//

    y = 1.5*y + transpose(A)*x;

    cout << "y = 1.5*y + A^T*x = " << y << endl;

}