Open64: osprey/cygnus/libiberty/bcopy.c Source File

00001 /* bcopy -- copy memory regions of arbitary length
00002 
00003 @deftypefn Supplemental void bcopy (char *@var{in}, char *@var{out}, int @var{length})
00004 
00005 Copies @var{length} bytes from memory region @var{in} to region
00006 @var{out}.  The use of @code{bcopy} is deprecated in new programs.
00007 
00008 @end deftypefn
00009 
00010 */
00011 
00012 void
00013 bcopy (src, dest, len)
00014   register char *src, *dest;
00015   int len;
00016 {
00017   if (dest < src)
00018     while (len--)
00019       *dest++ = *src++;
00020   else
00021     {
00022       char *lasts = src + (len-1);
00023       char *lastd = dest + (len-1);
00024       while (len--)
00025         *(char *)lastd-- = *(char *)lasts--;
00026     }
00027 }