(logb): Test HPUX, not hpux.

diff --git a/src/floatfns.c b/src/floatfns.c
index 145cae047419483b1d65f2bc947f7d1963f39418..10767e271fd066fbad7b5fe48968ee266afbd10e 100644 (file)
--- a/src/floatfns.c
+++ b/src/floatfns.c
@@ -76,9 +76,9 @@ Lisp_Object Qarith_error;
 #include <math.h>
 
 /* This declaration is omitted on some systems, like Ultrix.  */
-#if !defined (hpux) && defined (HAVE_LOGB)
+#if !defined (HPUX) && defined (HAVE_LOGB)
 extern double logb ();
-#endif /* !hpux && HAVE_LOGB */
+#endif /* not HPUX and HAVE_LOGB */
 
 #ifndef MSDOS
 #if defined(DOMAIN) && defined(SING) && defined(OVERFLOW)