From:	Guy Rauscher <rauscher AT netvision DOT net DOT il>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Floating point exception problem
Date:	Mon, 05 May 1997 23:30:08 -0700
Organization:	NetVision LTD.
Lines:	18
Message-ID:	<336ECFF0.1DEF@netvision.net.il>
NNTP-Posting-Host:	ts004p11.pop9a.netvision.net.il
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Hi!

I've constructed a small library for easily creating 3d applications with
Allegro. I've produced a small program to demonstrate the functionality
of my library and it ackwardly breaks sometimes due to a floating point
exception. The real problem is that the exception occurs when the 3d
clipping function is used but sometimes when I run the program, it works
fine. This is NOT because the condition that causes the exception gets
randomly unencountered. The clipping function uses floating point
division.

What I'd like to know is: what is it that causes a FPE in the first place
and more specifically, what can I do to fix my program? If necessary,
I'll post the source code.

Thanks,

Guy

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