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/* bcopy -- copy memory regions of arbitary length

@deftypefn Supplemental void bcopy (char *@var{in}, char *@var{out}, int @var{length})

Copies @var{length} bytes from memory region @var{in} to region

@var{out}.  The use of @code{bcopy} is deprecated in new programs.

@end deftypefn

*/

void

bcopy (src, dest, len)

  register char *src, *dest;

  int len;

{

  if (dest < src)

    while (len--)

      *dest++ = *src++;

  else

    {

      char *lasts = src + (len-1);

      char *lastd = dest + (len-1);

      while (len--)

        *(char *)lastd-- = *(char *)lasts--;

    }

}