--- src/sleep.c.orig	Tue Aug 20 15:55:32 2002
+++ src/sleep.c	Tue Aug 20 15:56:31 2002
@@ -222,7 +222,7 @@
       usage (1);
     }
 
-#ifdef FE_UPWARD
+#if defined(FE_UPWARD) && defined(HAVE_FESETROUND)
   /* Always round up, since we must sleep for at least the specified
      interval.  */
   fesetround (FE_UPWARD);