diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index da241623541..aa1c2a5ada9 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,10 @@
+2002-09-27  Richard Henderson  <rth@redhat.com>
+
+	* config/os/hpux/cpu_limits.h: Remove.
+
+	* include/std/std_limits.h (numeric_limits<T>::is_iec559): False
+	if denormals are not supported.
+
 2002-09-25  Benjamin Kosnik  <bkoz@redhat.com>
 
 	* include/Makefile.am (target_headers): Remove cpu_limits.h.
diff --git a/libstdc++-v3/include/std/std_limits.h b/libstdc++-v3/include/std/std_limits.h
index f8df6ba7895..be4b5f2a90b 100644
--- a/libstdc++-v3/include/std/std_limits.h
+++ b/libstdc++-v3/include/std/std_limits.h
@@ -911,7 +911,8 @@ namespace std
       static float denorm_min() throw()
       { return __FLT_DENORM_MIN__; }
 
-      static const bool is_iec559 = has_infinity && has_quiet_NaN;
+      static const bool is_iec559
+	= has_infinity && has_quiet_NaN && has_denorm == denorm_present;
       static const bool is_bounded = true;
       static const bool is_modulo = false;
 
@@ -968,7 +969,8 @@ namespace std
       static double denorm_min() throw()
       { return __DBL_DENORM_MIN__; }
 
-      static const bool is_iec559 = has_infinity && has_quiet_NaN;
+      static const bool is_iec559
+	= has_infinity && has_quiet_NaN && has_denorm == denorm_present;
       static const bool is_bounded = true;
       static const bool is_modulo = false;
 
@@ -1026,7 +1028,8 @@ namespace std
       static long double denorm_min() throw()
       { return __LDBL_DENORM_MIN__; }
 
-      static const bool is_iec559 = has_infinity && has_quiet_NaN;
+      static const bool is_iec559
+	= has_infinity && has_quiet_NaN && has_denorm == denorm_present;
       static const bool is_bounded = true;
       static const bool is_modulo = false;