1 /* wchar_t type related definitions. 2 Copyright (C) 2000 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, write to the Free 17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 18 02111-1307 USA. */ 19 20 #ifndef _BITS_WCHAR_H 21 #define _BITS_WCHAR_H 1 22 23 /* Use GCC's __WCHAR_MAX__ when available. */ 24 #ifdef __WCHAR_MAX__ 25 #define __WCHAR_MAX __WCHAR_MAX__ 26 #else 27 #define __WCHAR_MAX (2147483647) 28 #endif 29 30 /* GCC may also define __WCHAR_UNSIGNED__. 31 Use L'\0' to give the expression the correct (unsigned) type. */ 32 #ifdef __WCHAR_UNSIGNED__ 33 #define __WCHAR_MIN L'\0' 34 35 /* Failing that, rely on the preprocessor's knowledge of the 36 signedness of wchar_t. */ 37 #elif L'\0' - 1 > 0 38 #define __WCHAR_MIN L'\0' 39 #else 40 #define __WCHAR_MIN (-__WCHAR_MAX - 1) 41 #endif 42 43 #endif /* bits/wchar.h */ 44