tut01-page03-example02.cc (flens/examples/tut01-page03-example02.cc)

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#include <cxxstd/iostream.h>

#include <flens/flens.cxx>

using namespace flens;

using namespace std;

typedef GeMatrix<FullStorage<double> >  DGeMatrix;

typedef DenseVector<Array<double> >     DDenseVector;

// Each function call causes a malloc for a 4x4 matrix and a free at the end of

// scope.

void

foo()

{

    DGeMatrix A(4,4);

    A =  1,  2,  3,  4,

         5,  6,  7,  8,

         9, 10, 11, 12,

        13, 14, 15, 16;

    cout << "A = " << A << endl;

}

int

main()

{

    // Always have in mind that the function is an essential inner core routine

    // doing only little computation but gets called many times.

    for (int i=0; i<100; ++i) {

        foo();

    }

}