1  /* Copyright (C) 1991-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library 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 GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #define	__NO_CTYPE
      19  #include <ctype.h>
      20  
      21  /* Provide real-function versions of all the ctype macros.  */
      22  
      23  #define	func(name, type) \
      24    int name (int c) { return __isctype (c, type); }
      25  
      26  func (isalnum, _ISalnum)
      27  func (isalpha, _ISalpha)
      28  func (iscntrl, _IScntrl)
      29  func (isdigit, _ISdigit)
      30  func (islower, _ISlower)
      31  func (isgraph, _ISgraph)
      32  func (isprint, _ISprint)
      33  func (ispunct, _ISpunct)
      34  func (isspace, _ISspace)
      35  func (isupper, _ISupper)
      36  func (isxdigit, _ISxdigit)
      37  
      38  #define __ctype_tolower \
      39    ((int32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOLOWER) + 128)
      40  #define __ctype_toupper \
      41    ((int32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOUPPER) + 128)
      42  
      43  int
      44  tolower (int c)
      45  {
      46    return c >= -128 && c < 256 ? __ctype_tolower[c] : c;
      47  }
      48  libc_hidden_def (tolower)
      49  
      50  int
      51  toupper (int c)
      52  {
      53    return c >= -128 && c < 256 ? __ctype_toupper[c] : c;
      54  }
      55  libc_hidden_def (toupper)