my_symatrix.cc (flens/examples/my

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#include <cxxstd/iostream.h>

#include <flens/examples/my_symatrix.h>

#include <flens/examples/cg.h>

#include <flens/flens.cxx>

using namespace flens;

using namespace std;

int

main()

{

    const int   n = 5;

    MySyMatrix  A;

    DenseVector<Array<double> > x(n), z(n), b(n);

    z = 1;

    b = A*z;

///

/// Solve $Ax=b$

///

    cg(A, b, x);

    cout << "x = " << x << endl;

///

/// Get the infinity norm of the error

///

    x -= z;

    cout << "max abs error = " << abs(x(blas::iamax(x))) << std::endl;

}