Geografic-Information-System/raster/r.fill.dir/local.h

void filldir(int, int, int, struct band3 *);
void resolve(int, int, struct band3 *);
int dopolys(int, int, int, int);
void wtrshed(int, int, int, int, int);
void ppupdate(int, int, int, int, struct band3 *, struct band3 *);