| /* wcsrchr.c - Wide Character Reverse Search for POWER6+. |
| Copyright (C) 2012-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; see the file COPYING.LIB. If |
| not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include <wchar.h> |
| |
| #ifndef WCSRCHR |
| # define WCSRCHR wcsrchr |
| #endif |
| |
| /* Find the last occurrence of WC in WCS. */ |
| wchar_t * |
| WCSRCHR (const wchar_t *wcs, const wchar_t wc) |
| { |
| const wchar_t *wcs2 = wcs + 1; |
| const wchar_t *retval = NULL; |
| |
| if (*wcs == wc) |
| retval = wcs; |
| |
| if (*wcs == L'\0') return (wchar_t *) retval; |
| |
| do |
| { |
| wcs+=2; |
| |
| if (*wcs2 == wc) |
| retval = wcs2; |
| if (*wcs2 == L'\0') |
| return (wchar_t *) retval; |
| wcs2+=2; |
| |
| if (*wcs == wc) |
| retval = wcs; |
| if (*wcs == L'\0') |
| return (wchar_t *) retval; |
| wcs+=2; |
| |
| if (*wcs2 == wc) |
| retval = wcs2; |
| if (*wcs2 == L'\0') |
| return (wchar_t *) retval; |
| wcs2+=2; |
| |
| if (*wcs == wc) |
| retval = wcs; |
| if (*wcs == L'\0') |
| return (wchar_t *) retval; |
| wcs+=2; |
| |
| if (*wcs2 == wc) |
| retval = wcs2; |
| if (*wcs2 == L'\0') |
| return (wchar_t *) retval; |
| wcs2+=2; |
| |
| if (*wcs == wc) |
| retval = wcs; |
| if (*wcs == L'\0') |
| return (wchar_t *) retval; |
| wcs+=2; |
| |
| if (*wcs2 == wc) |
| retval = wcs2; |
| if (*wcs2 == L'\0') |
| return (wchar_t *) retval; |
| wcs2+=2; |
| |
| if (*wcs == wc) |
| retval = wcs; |
| } |
| while (*wcs != L'\0'); |
| |
| return (wchar_t *) retval; |
| } |