/* 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

*/

#include <stddef.h>

void
bcopy (const void *src, void *dest, size_t len)
{
 if (dest < src)
   {
     const char *firsts = (const char *) src;
     char *firstd = (char *) dest;
     while (len--)
       *firstd++ = *firsts++;
   }
 else
   {
     const char *lasts = (const char *)src + (len-1);
     char *lastd = (char *)dest + (len-1);
     while (len--)
       *lastd-- = *lasts--;
   }
}