libc/string/strncpy.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 Wstrncpy wcsncpy
  12 #else
  13 # define Wstrncpy strncpy
  14 #endif
  15
  16 Wchar *Wstrncpy(Wchar * __restrict s1, register const Wchar * __restrict s2,
  17                                 size_t n)
  18 {
  19         register Wchar *s = s1;
  20
  21         while (n) {
  22                 if ((*s = *s2) != 0) s2++; /* Need to fill tail with 0s. */
  23                 ++s;
  24                 --n;
  25         }
  26
  27         return s1;
  28 }
  29 #ifndef WANT_WIDE
  30 libc_hidden_def(strncpy)
  31 #endif