libc/string/memchr.c

   1 /*
   2  * Copyright (C) 2002     Manuel Novoa III
   3  * Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
   4  *
   5  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
   6  */
   7
   8 #include "_string.h"
   9
  10 #ifdef WANT_WIDE
  11 # define Wmemchr wmemchr
  12 #else
  13 # undef memchr
  14 # define Wmemchr memchr
  15 #endif
  16
  17 Wvoid *Wmemchr(const Wvoid *s, Wint c, size_t n)
  18 {
  19         register const Wuchar *r = (const Wuchar *) s;
  20
  21         while (n) {
  22                 if (*r == ((Wuchar)c)) {
  23                         return (Wvoid *) r;     /* silence the warning */
  24                 }
  25                 ++r;
  26                 --n;
  27         }
  28
  29         return NULL;
  30 }
  31
  32 libc_hidden_def(Wmemchr)