Path: utzoo!attcan!utgpu!watmath!maytag!watstat!dmurdoch
From: dmurdoch@watstat.waterloo.edu (Duncan Murdoch)
Newsgroups: comp.sys.ibm.pc
Subject: MS Fortran v 5.0 error trapping
Message-ID: <319@maytag.waterloo.edu>
Date: 24 Jul 89 17:43:40 GMT
Sender: daemon@maytag.waterloo.edu
Reply-To: dmurdoch@watstat.waterloo.edu (Duncan Murdoch)
Organization: U. of Waterloo, Ontario
Lines: 15
Summary:Can Microsoft Fortran recover from numeric errors?


(This is a repost from alt.msdos.programmer - I didn't get any replies there.
Sorry if anyone has had to read it twice!)

I've just bought Microsoft Fortran version 5.0, in order to work with a function
minimizing program that was written for a mainframe.  My program works, mostly,
but occasionally aborts with overflows or out of range values.  On the HP3000
where it last ran it was possible to trap each of these errors, set a flag,
and return a default value, so the program could continue on.  

In the MS Fortran manual, the only mention of error trapping that I can find
has to do with I/O errors.  Is it really impossible to trap calculation errors
in MS Fortran?

Duncan Murdoch