double line_monomial ( double a, double b, int expon );
void line_monomial_test ( int degree_max );
void line_quad_test ( int degree_max );
void line_rule ( double a, double b, int order, double w[], double x[] );
void line_unit_o01 ( double w[], double x[] );
void line_unit_o02 ( double w[], double x[] );
void line_unit_o03 ( double w[], double x[] );
void line_unit_o04 ( double w[], double x[] );
void line_unit_o05 ( double w[], double x[] );
double line_volume ( double a, double b );
void r8vec_copy ( int n, double a1[], double a2[] );
double r8vec_dot_product ( int n, double a1[], double a2[] );
void timestamp ( );