Example: A very simple example

/*
 * Expression Template Matrix Library
 *
 * Copyright (C) 2004 - 2004 Ricky Lung <mtlung@users.sourceforge.net>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

/*
 *  A simple example to show the basic usage of exmat
 */

#include <iostream>
// The all-in-one header for exmat
#include "../include/exmat.h"

using std::cout;
using std::endl;
using namespace exmat;

// Define the vector type (column vector of type float, size 3)
typedef Vec<DenseColVecCon<float, 3> > Vec3f;
// Define the matrix type (dense matrix of type float, dimension 3x3)
typedef Mat<DenseMatCon<float,3,3> > Mat3x3f;

int main()
{
    Vec3f v1(0), v2(0); // Initialize the vectors with zero
    Mat3x3f m1;

    // Assign some values to the matrix using comma operator
    m1 = 1, 2, 3,
         4, 5, 6,
         7, 8, 9;

    // Accessing individual element
    v2[1] = 1; // Using [] operator (zero based index)
    v2(2) = 2; // Using () operator (zero based index)

    v1 = m1 * v2;

    cout << v1;

    return 0;
}

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