sysdeps/generic/strcpy.c

   1 /* Copyright (C) 1991, 1997 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #include <stddef.h>
  20 #include <string.h>
  21 #include <memcopy.h>
  22
  23 /* Copy SRC to DEST.  */
  24 char *
  25 strcpy (dest, src)
  26      char *dest;
  27      const char *src;
  28 {
  29   reg_char c;
  30   char *s = (char *) src;
  31   const ptrdiff_t off = dest - src - 1;
  32
  33   do
  34     {
  35       c = *s++;
  36       s[off] = c;
  37     }
  38   while (c != '\0');
  39
  40   return dest;
  41 }