libc/sysdeps/linux/common/bits/uClibc_uwchar.h

   1 /*  Copyright (C) 2003     Manuel Novoa III
   2  *
   3  *  This library is free software; you can redistribute it and/or
   4  *  modify it under the terms of the GNU Lesser General Public
   5  *  License as published by the Free Software Foundation; either
   6  *  version 2.1 of the License, or (at your option) any later version.
   7  *
   8  *  The GNU C Library is distributed in the hope that it will be useful,
   9  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  *  Lesser General Public License for more details.
  12  *
  13  *  You should have received a copy of the GNU Lesser General Public
  14  *  License along with the GNU C Library; see the file COPYING.LIB.  If
  15  *  not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 /*  ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION!
  19  *
  20  *  Besides uClibc, I'm using this code in my libc for elks, which is
  21  *  a 16-bit environment with a fairly limited compiler.  It would make
  22  *  things much easier for me if this file isn't modified unnecessarily.
  23  *  In particular, please put any new or replacement functions somewhere
  24  *  else, and modify the makefile to use your version instead.
  25  *  Thanks.  Manuel
  26  *
  27  *  ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION! */
  28
  29
  30 /*  Define an internal unsigned int type __uwchar_t just large enough
  31  *  to hold a wchar_t.
  32  */
  33
  34 #ifndef _UCLIBC_UWCHAR_H
  35 #define _UCLIBC_UWCHAR_H
  36
  37 #include <limits.h>
  38 #include <stdint.h>
  39
  40 #if WCHAR_MIN == 0
  41 typedef wchar_t                         __uwchar_t;
  42 #elif WCHAR_MAX <= USHRT_MAX
  43 typedef unsigned short          __uwchar_t;
  44 #elif WCHAR_MAX <= UINT_MAX
  45 typedef unsigned int            __uwchar_t;
  46 #elif WCHAR_MAX <= ULONG_MAX
  47 typedef unsigned long           __uwchar_t;
  48 #elif defined(ULLONG_MAX) && (WCHAR_MAX <= ULLONG_MAX)
  49 typedef unsigned long long      __uwchar_t;
  50 #elif WCHAR_MAX <= UINTMAX_MAX
  51 typedef uintmax_t                       __uwchar_t;
  52 #else
  53 #error Can not determine an appropriate type for __uwchar_t!
  54 #endif
  55
  56 #endif /* _UCLIBC_UWCHAR_H */