#include <blitz/tinymat.h>#include <blitz/tinyvec-et.h>BZ_USING_NAMESPACE(blitz)int main(){    cout << "This example is interesting only for the code generated."         << endl;    return 0;}/* * Blitz++ version */void transform(double alpha, TinyVector<double,3>& x,     const TinyVector<double,3>& y){    TinyMatrix<double,3,3> C;    double cosa = cos(alpha),           sina = sin(alpha);    // Create the principal rotation matrix C_3(alpha)    C = cosa, -sina,   0.0,        sina,  cosa,   0.0,         0.0,   0.0,   1.0;    x = product(C,y);}/* * Low level version */void transform2(double alpha, double* x, double* y){    double c = cos(alpha),           s = sin(alpha);    x[0] = c * y[0] - s * y[1];    x[1] = s * y[0] + c * y[1];    x[2] = y[2];}