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From: tps@sdchem.UUCP (Tom Stockfisch)
Newsgroups: comp.lang.c
Subject: float equality (was Comments on ANSI...)
Message-ID: <652@sdchema.sdchem.UUCP>
Date: Fri, 20-Mar-87 04:03:41 EST
Article-I.D.: sdchema.652
Posted: Fri Mar 20 04:03:41 1987
Date-Received: Sat, 21-Mar-87 10:30:12 EST
References: <4804@brl-adm.ARPA> <365@bms-at.UUCP>
Sender: news@sdchem.UUCP
Reply-To: tps@sdchemf.UUCP (Tom Stockfisch)
Organization: UC San Diego
Lines: 26

In article <365@bms-at.UUCP> stuart@bms-at.UUCP (Stuart D. Gathman) writes:

>In article <4804@brl-adm.ARPA>,Schauble@mit-multics.arpa(Paul Schauble) writes:

>>...[claim that with float x,y, the test (x*y==x*y) can fail on many machines

Every single usage of "==" for floating point can fail?
What about

	double	dflmax();
	double	x =	dflmax();

	if ( x == dflmax() )
		...

or
	
	double	x = 0;

	if ( x == 0 )
		...

 ?

|| Tom Stockfisch, UCSD Chemistry	tps%chem@sdcsvax.ucsd.edu
					or  sdcsvax!sdchem!tps