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#define HZ2MS(hz) (1000/(hz))
/*
* alloc
*/
void *emalloc(ulong);
void *erealloc(void*, ulong);
char *estrdup(char*);
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);
void fprintmap(int, Map*);
int countshipcells(Map*);
int shiplen(int);
char *shipname(int);
char *statename(int);
int min(int, int);
int max(int, int);
int bitpackmap(uchar*, ulong, Map*);
int bitunpackmap(Map*, uchar*, ulong);
int chanvprint(Channel*, char*, va_list);
/*
* menulist
*/
Menulist *newmenulist(int, char*);
void delmenulist(Menulist*);
/*
* parse
*/
Cmdbuf *parsecmd(char*, int);
Cmdtab *lookupcmd(Cmdbuf*, Cmdtab*, int);
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