9.3 Example Using the Matrix Classes

FILENAME: example2.cpp

Program:

/*

 * Example program showing the use of matrix classes
 * to multiply a double precision matrix by a vector.
 */

// Include the header files for double precision matrices
// and vectors:
#include <rw/math/mathvec.h>
#include <rw/math/genmat.h>
#include <iostream.h>

main()
{
    // Define the vector and the matrix:
    RWMathVec<double> vector;
    RWGenMat<double> matrix;

    // Read in the vector, then the matrix:
    cin >> vector >> matrix;

    // Matrix multiply (the inner product):
    RWMathVec<double> answer = product(matrix, vector);

    // Print out the results:
    cout << "answer = \n" << answer << "\n";
}

Sample Input:

[
45.2  -2.4  78.91
]
3X3
[
1 0 1
2 1 1
2 0 -1
]

Sample Output:

answer =
[
124.1 166.9 11.5
]