wctype/iswctype.c

   1 /* Copyright (C) 1996, 2000, 2002 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>.
   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 #include <ctype.h>
  21 #include <wctype.h>
  22
  23 #include "wchar-lookup.h"
  24
  25 #undef __iswctype
  26
  27 int
  28 __iswctype (wint_t wc, wctype_t desc)
  29 {
  30   /* If the user passes in an invalid DESC valid (the one returned from
  31      `wctype' in case of an error) simply return 0.  */
  32   if (desc == (wctype_t) 0)
  33     return 0;
  34
  35   return wctype_table_lookup ((const char *) desc, wc);
  36 }
  37 libc_hidden_def (__iswctype)
  38 weak_alias (__iswctype, iswctype)