libc/string/strnlen.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 __USE_GNU
  11
  12 #ifdef WANT_WIDE
  13 # define Wstrnlen wcsnlen
  14 #else
  15 # define Wstrnlen strnlen
  16 #endif
  17
  18 size_t Wstrnlen(const Wchar *s, size_t max)
  19 {
  20         register const Wchar *p = s;
  21
  22         while (max && *p) {
  23                 ++p;
  24                 --max;
  25         }
  26
  27         return p - s;
  28 }
  29
  30 libc_hidden_def(Wstrnlen)
  31 #endif