void r8vec_copy ( int n, double a1[], double a2[] );
void timestamp ( );
double *wedge_grid ( int n, int ng );
int wedge_grid_size ( int n );
void wedge_grid_plot ( int n, int ng, double g[], char *header );
void wedge_vertices ( double v1[], double v2[], double v3[], double v4[], 
  double v5[], double v6[] );