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From: resnicks@netcom.UUCP (Steve Resnick)
Newsgroups: comp.os.msdos.programmer,alt.msdos.programmer
Subject: Trapping Floating Point Errors in Turbo C
Message-ID: <21650@netcom.UUCP>
Date: 22 Jan 91 21:22:16 GMT
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Organization: Netcom- The Bay Area's Public Access Unix System {408 241-9760 guest}
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I have a problem - I need to trap floating point errors from the floating
point hardware. Currently, I am using signal() to do this, but signal doesn't
give me some of the information I need. I assume that the 80n87 and the
emulator (EMU.LIB) both generate an interrupt in the event of a floating
point exception. My question is, what interrupt is generated, and if the
ISR for that interrupt is shared, what do I need to check on the PIC to
determine the source of the interupt?  One of the things I want, which
I can't get out of signal, is the CS:IP at the time of the exception, 
so that I can point the finger at a specific routine.
 
Thanx, in advance,

Steve