// -*- C++ -*-
/***************************************************************************
 *
 * cerrno - C++ Standard library interface to the ANSI C header errno.h
 *
 * $Id$
 *
 ***************************************************************************
 *
 * Licensed to the Apache Software  Foundation (ASF) under one or more
 * contributor  license agreements.  See  the NOTICE  file distributed
 * with  this  work  for  additional information  regarding  copyright
 * ownership.   The ASF  licenses this  file to  you under  the Apache
 * License, Version  2.0 (the  "License"); you may  not use  this file
 * except in  compliance with the License.   You may obtain  a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the  License is distributed on an  "AS IS" BASIS,
 * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
 * implied.   See  the License  for  the  specific language  governing
 * permissions and limitations under the License.
 *
 * Copyright 1994-2006 Rogue Wave Software.
 * 
 **************************************************************************/

#include <rw/_defs.h>

#ifndef _RWSTD_NO_PURE_C_HEADERS
#  include <ansi/_cerrno.h>
#else

#ifndef _RWSTD_NO_DEPRECATED_C_HEADERS

#ifndef _RWSTD_NAMESPACE_STD_OPEN
#define _RWSTD_NAMESPACE_STD_OPEN 3

_RWSTD_NAMESPACE (std) { 

#endif   // _RWSTD_NAMESPACE_STD_OPEN


#include _RWSTD_ANSI_C_ERRNO_H


#if _RWSTD_NAMESPACE_STD_OPEN == 3
#  undef _RWSTD_NAMESPACE_STD_OPEN

}   // namespace std

#endif   // _RWSTD_NAMESPACE_STD_OPEN == 3

#else   // if defined (_RWSTD_NO_DEPRECATED_C_HEADERS)

#ifndef _RWSTD_CERRNO_INCLUDED
#define _RWSTD_CERRNO_INCLUDED

#if    !defined (errno) \
    || !defined (EDOM) || !defined (ERANGE) || !defined (EAGAIN)
#  include _RWSTD_ANSI_C_ERRNO_H
#endif   // errno ...

#if !defined (_RWSTD_NO_NAMESPACE) && !defined (_RWSTD_NO_USING_LIBC_IN_STD)

namespace std {

// 17.4.1.2, p5 - errno may be a macro
#ifndef errno
using ::errno;

   // lwg issue 310 - errno shall be a macro
#  define errno errno
#endif   // errno

}   // std

#endif   // !_RWSTD_NO_NAMESPACE && !_RWSTD_NO_USING_LIBC_IN_STD

#endif   // _RWSTD_CERRNO_INCLUDED

#endif   // _RWSTD_NO_DEPRECATED_C_HEADERS

#endif   // _RWSTD_NO_PURE_C_HEADERS