// Predefined symbols and macros -*- C++ -*-

// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
// 2006, 2007, 2008, 2009, 2010, 2011 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 bits/c++config.h
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{iosfwd}
 */

#ifndef _GLIBCXX_CXX_CONFIG_H
#define _GLIBCXX_CXX_CONFIG_H 1

// The current version of the C++ library in compressed ISO date format.
#define __GLIBCXX__

// Macros for various attributes.
#ifndef _GLIBCXX_PURE
# define _GLIBCXX_PURE __attribute__ ((__pure__))
#endif

#ifndef _GLIBCXX_CONST
# define _GLIBCXX_CONST __attribute__ ((__const__))
#endif

#ifndef _GLIBCXX_NORETURN
# define _GLIBCXX_NORETURN __attribute__ ((__noreturn__))
#endif

#ifndef _GLIBCXX_NOTHROW
# ifdef __cplusplus
#  define _GLIBCXX_NOTHROW throw()
# else
#  define _GLIBCXX_NOTHROW __attribute__((__nothrow__))
# endif
#endif

// Macros for visibility.
// _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY
// _GLIBCXX_VISIBILITY_ATTR
#define _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY

#if _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY
# define _GLIBCXX_VISIBILITY_ATTR(V) __attribute__ ((__visibility__ (#V)))
#else
// If this is not supplied by the OS-specific or CPU-specific
// headers included below, it will be defined to an empty default.
# define _GLIBCXX_VISIBILITY_ATTR(V) _GLIBCXX_PSEUDO_VISIBILITY(V)
#endif

// Macros for deprecated.
// _GLIBCXX_DEPRECATED
// _GLIBCXX_DEPRECATED_ATTR
#ifndef _GLIBCXX_DEPRECATED
# define _GLIBCXX_DEPRECATED 1
#endif

#if defined(__DEPRECATED) && defined(__GXX_EXPERIMENTAL_CXX0X__)
# define _GLIBCXX_DEPRECATED_ATTR __attribute__ ((__deprecated__))
#else
# define _GLIBCXX_DEPRECATED_ATTR
#endif

#if __cplusplus

namespace std
{
  typedef __SIZE_TYPE__ 	size_t;
  typedef __PTRDIFF_TYPE__	ptrdiff_t;

#ifdef __GXX_EXPERIMENTAL_CXX0X__
  typedef decltype(nullptr)	nullptr_t;
#endif
}

// Macros for C compatibility. In particular, define extern "C"
// linkage only when using C++.
# define _GLIBCXX_BEGIN_EXTERN_C extern "C" {
# define _GLIBCXX_END_EXTERN_C }


// Macro for constexpr, to support in mixed 03/0x mode.
#ifndef _GLIBCXX_CONSTEXPR
# ifdef __GXX_EXPERIMENTAL_CXX0X__
#  define _GLIBCXX_CONSTEXPR constexpr
#  define _GLIBCXX_USE_CONSTEXPR constexpr
# else
#  define _GLIBCXX_CONSTEXPR
#  define _GLIBCXX_USE_CONSTEXPR const
# endif
#endif

// Macros for activating various inline namespaces.
//
// _GLIBCXX_NAMESPACE_DEBUG
// _GLIBCXX_NAMESPACE_PARALLEL
// _GLIBCXX_NAMESPACE_PROFILE
// _GLIBCXX_NAMESPACE_VERSION

// Guide to libstdc++ namespaces.
/*
  namespace std
  {
    namespace __debug { }
    namespace __parallel { }
    namespace __profile { }
    namespace __norm { } // __normative, __shadow, __replaced
    namespace __cxx1998 { }

    namespace tr1 { }
  }
*/

#ifdef _GLIBCXX_DEBUG
# define _GLIBCXX_INLINE_DEBUG 1
#endif

#ifdef _GLIBCXX_PARALLEL
# define _GLIBCXX_INLINE_PARALLEL 1
#endif

// Namespace association for profile.
#ifdef _GLIBCXX_PROFILE
# define _GLIBCXX_INLINE_PROFILE 1
#endif

#define _GLIBCXX_INLINE_VERSION

// Defined if inline namespaces modes are active.
#if _GLIBCXX_INLINE_DEBUG \
  || _GLIBCXX_INLINE_PARALLEL \
  || _GLIBCXX_INLINE_PROFILE \
  || _GLIBCXX_INLINE_VERSION
# define _GLIBCXX_USE_INLINE_NAMESPACES 1
#endif

// Macros for namespace scope. Either namespace std:: or the name
// of some nested namespace within it.
// _GLIBCXX_STD
// _GLIBCXX_STD_D
// _GLIBCXX_STD_P
// _GLIBCXX_STD_PR
//
// Macros for enclosing namespaces and possibly nested namespaces.
// _GLIBCXX_BEGIN_NAMESPACE
// _GLIBCXX_END_NAMESPACE
// _GLIBCXX_BEGIN_NESTED_NAMESPACE
// _GLIBCXX_END_NESTED_NAMESPACE
#ifndef _GLIBCXX_USE_INLINE_NAMESPACES
# define _GLIBCXX_STD_D _GLIBCXX_STD
# define _GLIBCXX_STD_P _GLIBCXX_STD
# define _GLIBCXX_STD_PR _GLIBCXX_STD
# define _GLIBCXX_STD std
# define _GLIBCXX_BEGIN_NESTED_NAMESPACE(X, Y) _GLIBCXX_BEGIN_NAMESPACE(X)
# define _GLIBCXX_END_NESTED_NAMESPACE _GLIBCXX_END_NAMESPACE
# define _GLIBCXX_BEGIN_NAMESPACE(X) namespace X _GLIBCXX_VISIBILITY_ATTR(default) {
# define _GLIBCXX_END_NAMESPACE }
#else

# if _GLIBCXX_INLINE_VERSION // && not anything else
#  define _GLIBCXX_STD_D _GLIBCXX_STD
#  define _GLIBCXX_STD_P _GLIBCXX_STD
#  define _GLIBCXX_STD _6
#  define _GLIBCXX_BEGIN_NAMESPACE(X) _GLIBCXX_BEGIN_NESTED_NAMESPACE(X, _6)
#  define _GLIBCXX_END_NAMESPACE _GLIBCXX_END_NESTED_NAMESPACE
# endif

//  debug
# if _GLIBCXX_INLINE_DEBUG && !_GLIBCXX_INLINE_PARALLEL && !_GLIBCXX_INLINE_PROFILE
#  define _GLIBCXX_STD_D __norm
#  define _GLIBCXX_STD_P _GLIBCXX_STD
#  define _GLIBCXX_STD __cxx1998
#  define _GLIBCXX_BEGIN_NAMESPACE(X) namespace X _GLIBCXX_VISIBILITY_ATTR(default) {
#  define _GLIBCXX_END_NAMESPACE }
#  define _GLIBCXX_EXTERN_TEMPLATE -1
# endif

// parallel
# if _GLIBCXX_INLINE_PARALLEL && !_GLIBCXX_INLINE_DEBUG && !_GLIBCXX_INLINE_PROFILE
#  define _GLIBCXX_STD_D _GLIBCXX_STD
#  define _GLIBCXX_STD_P __norm
#  define _GLIBCXX_STD __cxx1998
#  define _GLIBCXX_BEGIN_NAMESPACE(X) namespace X _GLIBCXX_VISIBILITY_ATTR(default) {
#  define _GLIBCXX_END_NAMESPACE }
# endif

// debug + parallel
# if _GLIBCXX_INLINE_PARALLEL && _GLIBCXX_INLINE_DEBUG  && !_GLIBCXX_INLINE_PROFILE
#  define _GLIBCXX_STD_D __norm
#  define _GLIBCXX_STD_P __norm
#  define _GLIBCXX_STD __cxx1998
#  define _GLIBCXX_BEGIN_NAMESPACE(X) namespace X _GLIBCXX_VISIBILITY_ATTR(default) {
#  define _GLIBCXX_END_NAMESPACE }
#  define _GLIBCXX_EXTERN_TEMPLATE -1
# endif

// profile
# if _GLIBCXX_INLINE_PROFILE
#  if _GLIBCXX_INLINE_PARALLEL || _GLIBCXX_INLINE_DEBUG
#   error Cannot use -D_GLIBCXX_PROFILE with -D_GLIBCXX_DEBUG or \
    -D_GLIBCXX_PARALLEL
#  endif
#  define _GLIBCXX_STD_D __norm
#  define _GLIBCXX_STD_P _GLIBCXX_STD
#  define _GLIBCXX_STD_PR __norm
#  define _GLIBCXX_STD __cxx1998
#  define _GLIBCXX_BEGIN_NAMESPACE(X) namespace X _GLIBCXX_VISIBILITY_ATTR(default) {
#  define _GLIBCXX_END_NAMESPACE }
# endif

# if __NO_INLINE__ && !__GXX_WEAK__
#  warning currently using inlined namespace mode which may fail \
   without inlining due to lack of weak symbols
# endif

# define _GLIBCXX_BEGIN_NESTED_NAMESPACE(X, Y)  namespace X { namespace Y _GLIBCXX_VISIBILITY_ATTR(default) {
# define _GLIBCXX_END_NESTED_NAMESPACE } }
#endif

// Inline namespaces for debug mode.
#if _GLIBCXX_INLINE_DEBUG && !_GLIBCXX_INLINE_PROFILE
namespace std
{
  namespace __norm { }
  inline namespace __debug { }
  inline namespace __cxx1998 { }
}
#endif

// Inline namespaces for parallel mode.
#if _GLIBCXX_INLINE_PARALLEL
namespace std
{
  namespace __norm { }
  inline namespace __parallel { }
  inline namespace __cxx1998 { }
}
#endif

// Inline namespaces for profile mode
#if _GLIBCXX_INLINE_PROFILE
namespace std
{
  namespace __norm { }
  inline namespace __profile { }
  inline namespace __cxx1998 { }
}
#endif

// Inline namespaces for versioning mode.
#if _GLIBCXX_INLINE_VERSION
namespace std
{
  inline namespace _6 { }
}

namespace __gnu_cxx
{
  inline namespace _6 { }
}

namespace std
{
  namespace tr1
  {
    inline namespace _6 { }
  }
}
#endif

// XXX GLIBCXX_ABI Deprecated
// Define if compatibility should be provided for -mlong-double-64
#undef _GLIBCXX_LONG_DOUBLE_COMPAT

// Inline namespaces for long double 128 mode.
#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
namespace std
{
  inline namespace __gnu_cxx_ldbl128 { }
}
# define _GLIBCXX_LDBL_NAMESPACE __gnu_cxx_ldbl128::
# define _GLIBCXX_BEGIN_LDBL_NAMESPACE namespace __gnu_cxx_ldbl128 {
# define _GLIBCXX_END_LDBL_NAMESPACE }
#else
# define _GLIBCXX_LDBL_NAMESPACE
# define _GLIBCXX_BEGIN_LDBL_NAMESPACE
# define _GLIBCXX_END_LDBL_NAMESPACE
#endif

// Macros for race detectors.
// _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(A) and
// _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(A) should be used to explain
// atomic (lock-free) synchronization to race detectors:
// the race detector will infer a happens-before arc from the former to the
// latter when they share the same argument pointer.
//
// The most frequent use case for these macros (and the only case in the
// current implementation of the library) is atomic reference counting:
//   void _M_remove_reference()
//   {
//     _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(&this->_M_refcount);
//     if (__gnu_cxx::__exchange_and_add_dispatch(&this->_M_refcount, -1) <= 0)
//       {
//         _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(&this->_M_refcount);
//         _M_destroy(__a);
//       }
//   }
// The annotations in this example tell the race detector that all memory
// accesses occurred when the refcount was positive do not race with
// memory accesses which occurred after the refcount became zero.

#ifndef _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE
# define  _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(A)
#endif
#ifndef _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER
# define  _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(A)
#endif

#else // !__cplusplus
# define _GLIBCXX_BEGIN_EXTERN_C
# define _GLIBCXX_END_EXTERN_C
# undef _GLIBCXX_BEGIN_NAMESPACE
# undef _GLIBCXX_END_NAMESPACE
# define _GLIBCXX_BEGIN_NAMESPACE(X)
# define _GLIBCXX_END_NAMESPACE
#endif

// First includes.

// Pick up any OS-specific definitions.
#include <bits/os_defines.h>

// Pick up any CPU-specific definitions.
#include <bits/cpu_defines.h>

// If platform uses neither visibility nor psuedo-visibility,
// specify empty default for namespace annotation macros.
#ifndef _GLIBCXX_PSEUDO_VISIBILITY
#define _GLIBCXX_PSEUDO_VISIBILITY(V)
#endif

// Allow use of "export template." This is currently not a feature
// that g++ supports.
// #define _GLIBCXX_EXPORT_TEMPLATE 1

// Allow use of the GNU syntax extension, "extern template." This
// extension is fully documented in the g++ manual, but in a nutshell,
// it inhibits all implicit instantiations and is used throughout the
// library to avoid multiple weak definitions for required types that
// are already explicitly instantiated in the library binary. This
// substantially reduces the binary size of resulting executables.

// Special case: _GLIBCXX_EXTERN_TEMPLATE == -1 disallows extern
// templates only in basic_string, thus activating its debug-mode
// checks even at -O0.
#ifndef _GLIBCXX_EXTERN_TEMPLATE
# define _GLIBCXX_EXTERN_TEMPLATE 1
#endif

// Certain function definitions that are meant to be overridable from
// user code are decorated with this macro.  For some targets, this
// macro causes these definitions to be weak.
#ifndef _GLIBCXX_WEAK_DEFINITION
# define _GLIBCXX_WEAK_DEFINITION
#endif

// Assert.
// Avoid the use of assert, because we're trying to keep the <cassert>
// include out of the mix.
#if !defined(_GLIBCXX_DEBUG) && !defined(_GLIBCXX_PARALLEL)
#define __glibcxx_assert(_Condition)
#else
_GLIBCXX_BEGIN_NAMESPACE(std)
  // Avoid the use of assert, because we're trying to keep the <cassert>
  // include out of the mix.
  inline void
  __replacement_assert(const char* __file, int __line,
		       const char* __function, const char* __condition)
  {
    __builtin_printf("%s:%d: %s: Assertion '%s' failed.\n", __file, __line,
		     __function, __condition);
    __builtin_abort();
  }
_GLIBCXX_END_NAMESPACE

#define __glibcxx_assert(_Condition)				   	\
  do 									\
  {							      		\
    if (! (_Condition))                                                 \
      std::__replacement_assert(__FILE__, __LINE__, 			\
				__PRETTY_FUNCTION__, #_Condition);	\
  } while (false)
#endif

// The remainder of the prewritten config is automatic; all the
// user hooks are listed above.

// Create a boolean flag to be used to determine if --fast-math is set.
#ifdef __FAST_MATH__
# define _GLIBCXX_FAST_MATH 1
#else
# define _GLIBCXX_FAST_MATH 0
#endif

// This marks string literals in header files to be extracted for eventual
// translation.  It is primarily used for messages in thrown exceptions; see
// src/functexcept.cc.  We use __N because the more traditional _N is used
// for something else under certain OSes (see BADNAMES).
#define __N(msgid)     (msgid)

// For example, <windows.h> is known to #define min and max as macros...
#undef min
#undef max

// End of prewritten config; the discovered settings follow.