Newsgroups: comp.arch
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!menudo.uh.edu!sugar!ficc!peter
From: peter@ficc.ferranti.com (peter da silva)
Subject: Re: IEEE arithmetic (Goldberg paper)
Message-ID: <DB-BIPG@xds13.ferranti.com>
Organization: Ferranti International Controls Corporation
References: <9106052113.AA14439@ucbvax.Berkeley.EDU> <3652@charon.cwi.nl> <GLEW.91Jun9110817@pdx007.intel.com>
Date: Fri, 14 Jun 91 17:24:56 GMT

In article <GLEW.91Jun9110817@pdx007.intel.com>, glew@pdx007.intel.com (Andy Glew) writes:
> In this programming model expressions like 0.0 * b arise frequently.
> And it sure would be nice if they could be optimized away.

Couldn't you do something like:

#define foo(...,x,...) ...((x)?((x) * b):(0.0))...

This should give the compiler a clue, no?
-- 
Peter da Silva; Ferranti International Controls Corporation; +1 713 274 5180;
Sugar Land, TX  77487-5012;         `-_-' "Have you hugged your wolf, today?"