bcopy.c revision 89857
1338085Skevans/* bcopy -- copy memory regions of arbitary length 2338085Skevans 3338085Skevans@deftypefn Supplemental void bcopy (char *@var{in}, char *@var{out}, int @var{length}) 4338085Skevans 5338085SkevansCopies @var{length} bytes from memory region @var{in} to region 6338085Skevans@var{out}. The use of @code{bcopy} is deprecated in new programs. 7338085Skevans 8338085Skevans@end deftypefn 9338085Skevans 10338085Skevans*/ 11338085Skevans 12338085Skevansvoid 13338085Skevansbcopy (src, dest, len) 14338085Skevans register char *src, *dest; 15338085Skevans int len; 16338085Skevans{ 17338085Skevans if (dest < src) 18338085Skevans while (len--) 19338085Skevans *dest++ = *src++; 20338085Skevans else 21338085Skevans { 22338085Skevans char *lasts = src + (len-1); 23338085Skevans char *lastd = dest + (len-1); 24338085Skevans while (len--) 25338085Skevans *(char *)lastd-- = *(char *)lasts--; 26338085Skevans } 27338085Skevans} 28338085Skevans