wcsmbs/wcsrchr.c

   1 /* Copyright (C) 1995-2017 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, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <wchar.h>
  20
  21 #ifndef WCSRCHR
  22 # define WCSRCHR wcsrchr
  23 #endif
  24
  25 /* Find the last occurrence of WC in WCS.  */
  26 wchar_t *
  27 WCSRCHR (const wchar_t *wcs, const wchar_t wc)
  28 {
  29   const wchar_t *retval = NULL;
  30
  31   do
  32     if (*wcs == wc)
  33       retval = wcs;
  34   while (*wcs++ != L'\0');
  35
  36   return (wchar_t *) retval;
  37 }