DECLARE_SCHEME_CALLBACK (calc_direction, (SCM));
DECLARE_SCHEME_CALLBACK (calc_control_points, (SCM));
- static bool less (Grob *const &s1,
- Grob *const &s2);
+ static int compare (Grob *const &s1,
+ Grob *const &s2);
static int get_position (Grob *);
};