Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!pasteur!ucbvax!G.BBN.COM!CLYNN
From: CLYNN@G.BBN.COM
Newsgroups: comp.protocols.tcp-ip
Subject: Re:  Checksums (again)
Message-ID: <[G.BBN.COM]31-Mar-88.09:03:19.CLYNN>
Date: 31 Mar 88 14:03:00 GMT
References: <8803301729.AA04851@oliver.cray.com>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 7

Dave,	I've never used a CRAY, but assuming it has unsigned arithmetic,
would it be faster to read & split 64-bit quantities similar to
	sum += (((unsigned) DATA) >> 32) + (0xFFFFFFFF & DATA);
or to
	if ( (sum += DATA) < DATA ) sum++;
?

Charlie