1  /* Elementary types and macros for the GNU UniString library.
       2     Copyright (C) 2002, 2005-2006, 2009-2023 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 */