libcxx initial import

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

include/csignal

@@ -0,0 +1,56 @@
+// -*- C++ -*-
+//===--------------------------- csignal ----------------------------------===//
+//
+// <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_CSIGNAL
+#define _LIBCPP_CSIGNAL
+
+/*
+    csignal synopsis
+
+Macros:
+
+    SIG_DFL
+    SIG_ERR
+    SIG_IGN
+    SIGABRT
+    SIGFPE
+    SIGILL
+    SIGINT
+    SIGSEGV
+    SIGTERM
+ 
+namespace std
+{
+
+Types:
+
+    sig_atomic_t
+
+void (*signal(int sig, void (*func)(int)))(int);
+int raise(int sig);
+
+}  // std
+
+*/
+
+#include <__config>
+#include <signal.h>
+
+#pragma GCC system_header
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+using ::sig_atomic_t;
+using ::signal;
+using ::raise;
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif  // _LIBCPP_CSIGNAL