rb_w32_gethostbyaddr  231 include/ruby/win32.h extern struct hostent *WSAAPI rb_w32_gethostbyaddr(const char *, int, int);
rb_w32_gethostbyaddr  482 include/ruby/win32.h #define gethostbyaddr(a, l, t)	rb_w32_gethostbyaddr(a, l, t)