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diff --git a/gcc-4.9/libstdc++-v3/include/c_std/cfloat b/gcc-4.9/libstdc++-v3/include/c_std/cfloat
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+// -*- C++ -*- forwarding header.
+
+// Copyright (C) 1997-2014 Free Software Foundation, Inc.
+//
+// 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file include/cfloat
+ * This is a Standard C++ Library file. You should @c #include this file
+ * in your programs, rather than any of the @a *.h implementation files.
+ *
+ * This is the C++ version of the Standard C Library header @c float.h,
+ * and its contents are (mostly) the same as that header, but are all
+ * contained in the namespace @c std (except for names which are defined
+ * as macros in C).
+ */
+
+//
+// ISO C++ 14882: 18.2.2 Implementation properties: C library
+//
+
+#ifndef _GLIBCXX_CFLOAT
+#define _GLIBCXX_CFLOAT 1
+
+#pragma GCC system_header
+
+#include <float.h>
+
+#endif