Xref: utzoo comp.lang.c:11077 comp.lang.fortran:865
Path: utzoo!attcan!uunet!husc6!mailrus!cornell!uw-beaver!teknowledge-vaxc!sri-unix!garth!smryan
From: smryan@garth.UUCP (Steven Ryan)
Newsgroups: comp.lang.c,comp.lang.fortran
Subject: Re: += in C
Message-ID: <851@garth.UUCP>
Date: 1 Jul 88 20:20:55 GMT
References: <2314@ncr-sd.SanDiego.NCR.COM>
Reply-To: smryan@garth.UUCP (Steven Ryan)
Organization: INTERGRAPH (APD) -- Palo Alto, CA
Lines: 6

>In the second case the address a[i][j] is computed only once and reused.
>This is faster both at compilation and execution times.
>
>An optimizer would convert the first to the second.

Assuming none are *volatile*.