lib/unitypes.in.h

   1 /* Elementary types and macros for the GNU UniString library.
   2    Copyright (C) 2002, 2005-2006, 2009-2024 Free Software Foundation, Inc.
   3
   4    This file is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU Lesser General Public License as
   6    published by the Free Software Foundation; either version 2.1 of the
   7    License, or (at your option) any later version.
   8
   9    This file is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #ifndef _UNITYPES_H
  18 #define _UNITYPES_H
  19
  20 /* Get uint8_t, uint16_t, uint32_t.  */
  21 #include <stdint.h>
  22
  23 /* Type representing a Unicode character.  */
  24 typedef uint32_t ucs4_t;
  25
  26 /* Attribute of a function whose result depends only on the arguments
  27    (not pointers!) and which has no side effects.  */
  28 #ifndef _UC_ATTRIBUTE_CONST
  29 # if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95) || defined __clang__
  30 #  define _UC_ATTRIBUTE_CONST __attribute__ ((__const__))
  31 # else
  32 #  define _UC_ATTRIBUTE_CONST
  33 # endif
  34 #endif
  35
  36 /* Attribute of a function whose result depends only on the arguments
  37    (possibly pointers) and global memory, and which has no side effects.  */
  38 #ifndef _UC_ATTRIBUTE_PURE
  39 # if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || defined __clang__
  40 #  define _UC_ATTRIBUTE_PURE __attribute__ ((__pure__))
  41 # else
  42 #  define _UC_ATTRIBUTE_PURE
  43 # endif
  44 #endif
  45
  46 /* Qualifier in a function declaration, that asserts that the caller must
  47    pass a pointer to a different object in the specified pointer argument
  48    than in the other pointer arguments.  */
  49 #ifndef _UC_RESTRICT
  50 # if defined __restrict \
  51      || 2 < __GNUC__ + (95 <= __GNUC_MINOR__) \
  52      || __clang_major__ >= 3
  53 #  define _UC_RESTRICT __restrict
  54 # elif 199901L <= __STDC_VERSION__ || defined restrict
  55 #  define _UC_RESTRICT restrict
  56 # else
  57 #  define _UC_RESTRICT
  58 # endif
  59 #endif
  60
  61 #endif /* _UNITYPES_H */