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diff --git a/libstdc++-v3/testsuite/18_support/numeric_limits/is_iec559.cc b/libstdc++-v3/testsuite/18_support/numeric_limits/is_iec559.cc
new file mode 100644
index 00000000..0f9ad947
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+++ b/libstdc++-v3/testsuite/18_support/numeric_limits/is_iec559.cc
@@ -0,0 +1,80 @@
+// { dg-options "-mieee" { target alpha*-*-* } }
+// { dg-options "-mieee" { target sh*-*-* } }
+
+// 1999-08-23 bkoz
+
+// Copyright (C) 1999, 2001, 2002, 2003, 2004, 2009 Free Software Foundation
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 18.2.1.1 template class numeric_limits
+
+#include <limits>
+#include <limits.h>
+#include <float.h>
+#include <cwchar>
+#include <testsuite_hooks.h>
+
+template<typename T>
+void
+test_is_iec559()
+{
+  bool test;
+
+  if (std::numeric_limits<T>::is_iec559)
+    {
+      // IEC 559 requires all of the following.
+      test = (std::numeric_limits<T>::has_infinity
+	      && std::numeric_limits<T>::has_quiet_NaN
+	      && std::numeric_limits<T>::has_signaling_NaN);
+    }
+  else
+    {
+      // If we had all of the following, why didn't we set IEC 559?
+      test = (!std::numeric_limits<T>::has_infinity
+	      || !std::numeric_limits<T>::has_quiet_NaN
+	      || !std::numeric_limits<T>::has_signaling_NaN);
+    }
+
+  VERIFY (test);
+}
+
+// libstdc++/8949
+bool test04()
+{
+  bool test __attribute__((unused)) = true;
+
+  VERIFY( !std::numeric_limits<short>::is_iec559 );
+  VERIFY( !std::numeric_limits<unsigned short>::is_iec559 );
+  VERIFY( !std::numeric_limits<int>::is_iec559 );
+  VERIFY( !std::numeric_limits<unsigned int>::is_iec559 );
+  VERIFY( !std::numeric_limits<long>::is_iec559 );
+  VERIFY( !std::numeric_limits<unsigned long>::is_iec559 );
+  VERIFY( !std::numeric_limits<long long>::is_iec559 );
+  VERIFY( !std::numeric_limits<unsigned long long>::is_iec559 );
+  return test;
+}
+
+int main()
+{
+  test_is_iec559<float>();
+  test_is_iec559<double>();
+  test_is_iec559<long double>();
+
+  test04();
+
+  return 0;
+}