mirror of https://github.com/Wind4/vlmcsd
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
8 years ago
|
/* wchar_t type related definitions.
|
||
|
|
Copyright (C) 2000-2016 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 */
|