double *monomial_value ( int m, int n, int e[], double x[] ); double r8vec_sum ( int n, double a[] ); double *r8vec_uniform_01_new ( int n, int *seed ); double tetrahedron01_monomial_integral ( int e[] ); double *tetrahedron01_sample ( int n, int *seed ); double tetrahedron01_volume ( ); void timestamp ( );