((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
#endif
+#ifndef __P
+#if defined (__GNUC__) || (defined (__STDC__) && __STDC__)
+#define __P(args) args
+#else
+#define __P(args) ()
+#endif /* GCC. */
+#endif /* Not __P. */
/* How many days are in each month. */
const unsigned short int __mon_lengths[2][12] =