1  /* Copyright (C) 1995-2023 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  #include <wchar.h>
      19  
      20  #ifdef WCSCHRNUL
      21  # define __wcschrnul WCSCHRNUL
      22  #endif
      23  
      24  /* Find the first occurrence of WC in WCS.  */
      25  wchar_t *
      26  __wcschrnul (const wchar_t *wcs, const wchar_t wc)
      27  {
      28    while (*wcs != L'\0')
      29      if (*wcs == wc)
      30        break;
      31      else
      32        ++wcs;
      33  
      34    return (wchar_t *) wcs;
      35  }
      36  #ifndef WCSCHRNUL
      37  weak_alias (__wcschrnul, wcschrnul)
      38  #endif