libc/string/strncat.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 Wstrncat wcsncat
  12 #else
  13 # define Wstrncat strncat
  14 #endif
  15
  16 Wchar *Wstrncat(Wchar * __restrict s1, register const Wchar * __restrict s2,
  17                                 size_t n)
  18 {
  19         register Wchar *s = s1;
  20
  21         while (*s++);
  22         --s;
  23         while (n && ((*s = *s2++) != 0)) {
  24                 --n;
  25                 ++s;
  26         }
  27         *s = 0;
  28
  29         return s1;
  30 }
  31
  32 #ifndef WANT_WIDE
  33 libc_hidden_def(strncat)
  34 #endif