Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!watmath!clyde!cuae2!ihnp4!inuxc!iuvax!ndmath!dean
From: dean@ndmath.UUCP
Newsgroups: comp.lang.c
Subject: induction variable optimization
Message-ID: <182@ndmath.UUCP>
Date: Sun, 1-Feb-87 16:32:17 EST
Article-I.D.: ndmath.182
Posted: Sun Feb  1 16:32:17 1987
Date-Received: Mon, 2-Feb-87 03:52:32 EST
Organization: Math. Dept., Univ. of Notre Dame
Lines: 14
Keywords: does this work?

In a recent Newsletter from Microsoft in Byte, the following is given as an
example of *induction variable optimization* :

     for(i=0;i<10;++i)   j += i*7;

     evaluates to:

     for(i=0;i<70;i += 7)  j += i;

Now, I may not understand what "evaluates to" means here, but it seems to me
that these statements are not equivalent, and following code which depends on
the value of i may not work correctly. Am I misunderstanding something?

     Dean Alvis   ( ...!ndmath!dean)