libcxx initial import

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8

include/cerrno

@@ -0,0 +1,57 @@
+// -*- C++ -*-
+//===-------------------------- cerrno ------------------------------------===//
+//
+// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_CERRNO
+#define _LIBCPP_CERRNO
+
+/*
+    cerrno synopsis
+
+Macros:
+
+    EDOM
+    EILSEQ  // C99
+    ERANGE
+    errno
+
+*/
+
+#include <__config>
+#include <errno.h>
+
+#pragma GCC system_header
+
+#if !defined(EOWNERDEAD) || !defined(ENOTRECOVERABLE)
+
+const int __elast1 = ELAST+1;
+const int __elast2 = ELAST+2;
+#undef ELAST
+
+#ifdef ENOTRECOVERABLE
+
+#define EOWNERDEAD __elast1
+#define ELAST EOWNERDEAD
+
+#elif defined(EOWNERDEAD)
+
+#define ENOTRECOVERABLE __elast1
+#define ELAST ENOTRECOVERABLE
+
+#else
+
+#define EOWNERDEAD __elast1
+#define ENOTRECOVERABLE __elast2
+#define ELAST ENOTRECOVERABLE
+
+#endif
+
+#endif
+
+#endif  // _LIBCPP_CERRNO