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| Related articles |
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| Reduction of Strength and Polynomials ilja@wi.leidenuniv.nl (Ilja Heitlager) (1997-03-27) |
| Re: Reduction of Strength and Polynomials n8tm@aol.com (1997-03-31) |
| From: | n8tm@aol.com (N8TM) |
| Newsgroups: | comp.compilers |
| Date: | 31 Mar 1997 15:23:07 -0500 |
| Organization: | AOL http://www.aol.com |
| References: | 97-03-147 |
| Keywords: | optimize, arithmetic |
Several compilers expand the terms of a polynomial and take advantage
of common factors. However, I have never seen anything which would
use distributive properties to change the order of addition and
multiplication> Compilers which ignore parentheses (IRIX
-OPT:roundoff=2) don't seem to have any good reason for the order of
addition and subtraction which they choose. It seems that if you know
the way you want it done, you must dictate it with parentheses and
avoid compiler options which defeat them.
Tim
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