lib/memcpy.c

   1 /* Copy LEN bytes starting at SRCADDR to DESTADDR.  Result undefined
   2    if the source overlaps with the destination.
   3    Return DESTADDR. */
   4
   5 char *
   6 memcpy (destaddr, srcaddr, len)
   7      char *destaddr;
   8      const char *srcaddr;
   9      int len;
  10 {
  11   char *dest = destaddr;
  12
  13   while (len-- > 0)
  14     *destaddr++ = *srcaddr++;
  15   return dest;
  16 }