Date: Thu, 7 Mar 1996 12:08:30 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: Erik Luijten <erik AT tntnhb3 DOT tn DOT tudelft DOT nl>
Cc: djgpp <djgpp AT delorie DOT com>
Subject: Re: floating p. exception behaves strange
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Message-Id: <Pine.SUN.3.91.960307120623.28164D-100000@is>
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On Thu, 7 Mar 1996, Erik Luijten wrote:

> In other words: it seems that the floating point exception of a previous
> run affect the next run (at least if Win95 is the DPMI-host).

You can use _status87 and _control87 library functions to look at the 
coprocessor status word and put it into a certain state as far as 
floating exceptions are concerned.  Maybe the status word isn't cleared 
by the default exception handler?