int *i4vec_zero_new ( int n );
double *qwv ( int n, double a, double b, double x[] );
void r8mat_print ( int m, int n, double a[], char *title );
void r8mat_print_some ( int m, int n, double a[], int ilo, int jlo, int ihi,
  int jhi, char *title );
double *r8mat_solve2 ( int n, double a[], double b[], int *ierror );
double *r8vec_even_new ( int n, double alo, double ahi );
void r8vec_print ( int n, double a[], char *title );
double *r8vec_zero_new ( int n );
void timestamp ( );