ref: 25e1b9489b9090b5d3372dd0dac09c1e7b3f10b3 dir: /fns.h/
#define HZ2MS(hz) (1000/(hz)) /* * alloc */ void *emalloc(ulong); void *erealloc(void*, ulong); Image *eallocimage(Display*, Rectangle, ulong, int, ulong);