+#endif /* ! defined (HAVE_SETITIMER) */
+#if defined (HAVE_SYSCONF) && defined (_SC_CLK_TCK)
+ return sysconf (_SC_CLK_TCK);
+#else /* ! defined (HAVE_SYSCONF) || ! defined (_SC_CLK_TCK) */
+#ifdef __MSDOS__
+ return 18;
+#else /* ! defined (__MSDOS__) */
+ return HZ_WRONG;
+#endif /* ! defined (__MSDOS__) */
+#endif /* ! defined (HAVE_SYSCONF) || ! defined (_SC_CLK_TCK) */
+#endif /* ! defined (HERTZ) */