unsigned int gd_cave_adler_checksum(GdCave *cave);
void gd_cave_adler_checksum_more(GdCave *cave, unsigned int *a, unsigned int *b);
unsigned int gd_cave_adler_checksum(GdCave *cave);
void gd_cave_adler_checksum_more(GdCave *cave, unsigned int *a, unsigned int *b);