整理

include/boost/predef/language/stdc.h

@@ -0,0 +1,54 @@
+/*
+Copyright Rene Rivera 2011-2015
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE_1_0.txt or copy at
+http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+#ifndef BOOST_PREDEF_LANGUAGE_STDC_H
+#define BOOST_PREDEF_LANGUAGE_STDC_H
+
+#include <boost/predef/version_number.h>
+#include <boost/predef/make.h>
+
+/* tag::reference[]
+= `BOOST_LANG_STDC`
+
+http://en.wikipedia.org/wiki/C_(programming_language)[Standard C] language.
+If available, the year of the standard is detected as YYYY.MM.1 from the Epoch date.
+
+[options="header"]
+|===
+| {predef_symbol} | {predef_version}
+
+| `+__STDC__+` | {predef_detection}
+
+| `+__STDC_VERSION__+` | V.R.P
+|===
+*/ // end::reference[]
+
+#define BOOST_LANG_STDC BOOST_VERSION_NUMBER_NOT_AVAILABLE
+
+#if defined(__STDC__)
+#   undef BOOST_LANG_STDC
+#   if defined(__STDC_VERSION__)
+#       if (__STDC_VERSION__ > 100)
+#           define BOOST_LANG_STDC BOOST_PREDEF_MAKE_YYYYMM(__STDC_VERSION__)
+#       else
+#           define BOOST_LANG_STDC BOOST_VERSION_NUMBER_AVAILABLE
+#       endif
+#   else
+#       define BOOST_LANG_STDC BOOST_VERSION_NUMBER_AVAILABLE
+#   endif
+#endif
+
+#if BOOST_LANG_STDC
+#   define BOOST_LANG_STDC_AVAILABLE
+#endif
+
+#define BOOST_LANG_STDC_NAME "Standard C"
+
+#endif
+
+#include <boost/predef/detail/test.h>
+BOOST_PREDEF_DECLARE_TEST(BOOST_LANG_STDC,BOOST_LANG_STDC_NAME)