double *disk_grid ( int n, double r, double c[2], int ng );
int disk_grid_count ( int n, double r, double c[2] );
double *disk_grid_fibonacci ( int n, double r, double c[2] );
void r82vec_print_part ( int n, double a[], int max_print, string title );
void r8mat_write ( string output_filename, int m, int n, double table[] );
void timestamp ( );