/* Copyright (C) 1996 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <wchar.h> wchar_t * wmemchr (s, c, n) register const wchar_t *s; register wchar_t c; register size_t n; { /* For performance reasons unfold the loop four times. */ while (n >= 4) { if (s[0] == c) return (wchar_t *) s; if (s[1] == c) return (wchar_t *) &s[1]; if (s[2] == c) return (wchar_t *) &s[2]; if (s[3] == c) return (wchar_t *) &s[3]; s += 4; n -= 4; } if (n > 0) { if (*s == c) return (wchar_t *) s; ++s; --n; } if (n > 0) { if (*s == c) return (wchar_t *) s; ++s; --n; } if (n > 0) if (*s == c) return (wchar_t *) s; return NULL; }