/* wchar_t type related definitions.

   Copyright (C) 2000-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#ifndef _BITS_WCHAR_H

#define _BITS_WCHAR_H	1

/* The fallback definitions, for when __WCHAR_MAX__ or __WCHAR_MIN__

   are not defined, give the right value and type as long as both int

   and wchar_t are 32-bit types.  Adding L'\0' to a constant value

   ensures that the type is correct; it is necessary to use (L'\0' +

   0) rather than just L'\0' so that the type in C++ is the promoted

   version of wchar_t rather than the distinct wchar_t type itself.

   Because wchar_t in preprocessor #if expressions is treated as

   intmax_t or uintmax_t, the expression (L'\0' - 1) would have the

   wrong value for WCHAR_MAX in such expressions and so cannot be used

   to define __WCHAR_MAX in the unsigned case.  */

#ifdef __WCHAR_MAX__

# define __WCHAR_MAX	__WCHAR_MAX__

#elif L'\0' - 1 > 0

# define __WCHAR_MAX	(0xffffffffu + L'\0')

#else

# define __WCHAR_MAX	(0x7fffffff + L'\0')

#endif

#ifdef __WCHAR_MIN__

# define __WCHAR_MIN	__WCHAR_MIN__

#elif L'\0' - 1 > 0

# define __WCHAR_MIN	(L'\0' + 0)

#else

# define __WCHAR_MIN	(-__WCHAR_MAX - 1)

#endif

#endif	/* bits/wchar.h */