9.5 Type Conversion Example

FILENAME: example4.cpp

Program:

/*

 * Example program illustrating type
 * conversion. Template functions will not do 
 * automatic conversion, but Math.h++ provides 
 * explicit casting between collection classes 
 * of different datatypes.
 */

// Include the RWMathVec class header files.

#include <rw/math/mathvec.h>
#include <iostream.h>

// Initial data for the vectors.
double adata[] = {1., 3., -2., -6., 7.};
int    idata[] = {2, 6, -4, 2, 1};

main()
{
    // Construct the vectors V and iV from the
    // arrays defined above.

    RWMathVec<double> V(adata, 5);
    RWMathVec<int> iV(idata, 5);

/*
 * Output the dot product of the two vectors.
 * Note that the function dot has prototype
 * template<class T> dot(RWMathVec<T>&, RWMathVec<T>&),
 * so to use dot, the RWMathVec<int> is cast to
 * RWMathVec<double> to get a match.
*/
   RWMathVec<double> temp = RWConvertMathVec<int,double>(iV);
   cout << dot (V, RWConvertMathVec<int,double>(iV));
}

Sample Input:

None required.

Sample Output: