Geografic-Information-System/imagery/i.gensigset/local_proto.h

/* invert.c */
int invert(double **, int, double *, int *, double **, double *);

/* lookup_class.c */
int lookup_class(CELL *, int, CELL *, int, CELL *);

/* subcluster.c */
void subcluster(struct SigSet *, int, int *, int);