Path: utzoo!attcan!uunet!mcsun!ukc!slxsys!ibmpcug!dylan
From: dylan@ibmpcug.co.uk (Matthew Farwell)
Newsgroups: comp.lang.c
Subject: Re: Inherent imprecision of floating point variables
Message-ID: <b3f.2688bfce@ibmpcug.co.uk>
Date: 27 Jun 90 14:16:46 GMT
References: <3300@crash.cts.com> <44436@ism780c.isc.com>
Reply-To: dylan@ibmpcug.CO.UK (Matthew Farwell)
Organization: The IBM PC User Group, UK.
Lines: 31

In article <44436@ism780c.isc.com> marv@ism780.UUCP (Marvin Rubenstein) writes:
>The problem has nothing to do with C or the precision of the machine's
>floating point unit.  It has to do with the precision of the ASCII to float
>and float to ASCII conversion routines.  This problem was addressed at the
>SIGPLAN '90 conference on Program Language Design and Implementation.  Two
>papers appear in the proceedings:

Consider the code segment:-

main()
{
	float f;

	f = 0.0;
	while (1) {
		if (f == 10.0) break;
		printf("%f\n", f);
		f += 0.1;
	}
	printf("Stopped\n");
}

If its all to do with conversion routines, why doesn't this stop when f
reaches 10?

Dylan.
-- 
Matthew J Farwell                 | Email: dylan@ibmpcug.co.uk
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