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 #ifdef __cplusplus
  24 extern "C" {
  25 #endif
  26
  27
  28 /* Type representing a Unicode character.  */
  29 typedef uint32_t ucs4_t;
  30
  31 /* Attribute of a function whose result depends only on the arguments
  32    (not pointers!) and which has no side effects.  */
  33 #ifndef _UC_ATTRIBUTE_CONST
  34 # if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95) || defined __clang__
  35 #  define _UC_ATTRIBUTE_CONST __attribute__ ((__const__))
  36 # else
  37 #  define _UC_ATTRIBUTE_CONST
  38 # endif
  39 #endif
  40
  41 /* Attribute of a function whose result depends only on the arguments
  42    (possibly pointers) and global memory, and which has no side effects.  */
  43 #ifndef _UC_ATTRIBUTE_PURE
  44 # if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || defined __clang__
  45 #  define _UC_ATTRIBUTE_PURE __attribute__ ((__pure__))
  46 # else
  47 #  define _UC_ATTRIBUTE_PURE
  48 # endif
  49 #endif
  50
  51 /* Qualifier in a function declaration, that asserts that the caller must
  52    pass a pointer to a different object in the specified pointer argument
  53    than in the other pointer arguments.  */
  54 #ifndef _UC_RESTRICT
  55 # if defined __restrict \
  56      || 2 < __GNUC__ + (95 <= __GNUC_MINOR__) \
  57      || __clang_major__ >= 3
  58 #  define _UC_RESTRICT __restrict
  59 # elif 199901L <= __STDC_VERSION__ || defined restrict
  60 #  define _UC_RESTRICT restrict
  61 # else
  62 #  define _UC_RESTRICT
  63 # endif
  64 #endif
  65
  66
  67 #ifdef __cplusplus
  68 }
  69 #endif
  70
  71 #endif /* _UNITYPES_H */