1 /* Search wide string for a wide character. 2 Copyright (C) 1999, 2011-2021 Free Software Foundation, Inc. 3 Written by Bruno Haible <bruno@clisp.org>, 1999. 4 5 This file is free software: you can redistribute it and/or modify 6 it under the terms of the GNU Lesser General Public License as 7 published by the Free Software Foundation; either version 3 of the 8 License, or (at your option) any later version. 9 10 This file 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 13 GNU Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public License 16 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 17 18 wchar_t * 19 wcsrchr (const wchar_t *wcs, wchar_t wc) /* */ 20 { 21 /* Calling wcslen and then searching from the other end would cause more 22 memory accesses. Avoid that, at the cost of a few more comparisons. */ 23 wchar_t *result = NULL; 24 25 for (;; wcs++) 26 { 27 if (*wcs == wc) 28 result = (wchar_t *) wcs; 29 if (*wcs == (wchar_t)'\0') 30 break; 31 } 32 return result; 33 }