21#if !defined(__CYGWIN__) && defined(__GNUC__) && !defined(__MINGW32__)
22#define INTERNAL __attribute__((visibility("hidden")))
INTERNAL void deref(Site *)
INTERNAL Site * getsite(void)
INTERNAL void makevertex(Site *)
INTERNAL double ngdist(Site *, Site *)
INTERNAL void siteinit(void)
INTERNAL void ref(Site *)