ref: fbea30a51227ccf96382519966f09791b02d0f8e
dir: /fns.h/
#define HZ2MS(hz) (1000/(hz)) /* * alloc */ void *emalloc(ulong); void *erealloc(void*, ulong); Image *eallocimage(Display*, Rectangle, ulong, int, ulong); /* * util */ char *cell2coords(Point2); Point2 coords2cell(char*); int gettile(Map*, Point2); void settile(Map*, Point2, int); void settiles(Map*, Point2, int, int, int); int shiplen(int);