Floating point underflow

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Article #3599

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#3599

From: Claudio Fahey
Date: Sun, 24 Jan 1993 13:24

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I'm trying to write a program with the IBM C Set/2.  Every
once in a while, the program just terminates when I perform
a specific action.  IPMD ( the debugger ) tells me that it
gets a floating point underflow on a line such as this:
    LONG rc; float Temp;
        rc = Temp * NUMCOLORS/MAXTEMP;
        When I trace into it, Temp is around 1e-40 and NUMCOLORS/MAXTEMP is
        around 0.93.  Why is it giving me this error?  Why doesn't it just
        set rc to 0?  How can I avoid this problem?  Thanks.
---
 . OLX 2.1 TD . !enilgaT siht edisni deppart m'I !pleH

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From: claudio.fahey@idcbbs.com (Claudio Fahey) 
Newsgroups: comp.os.os2.programmer
Subject: Floating point underflow
Message-ID: <1430.1034.uupcb@idcbbs.com>
Date: 24 Jan 93 13:24:00 GMT
Distribution: world
Organization: IDC BBS - Alameda, CA - 510-865-7115
Reply-To: claudio.fahey@idcbbs.com (Claudio Fahey) 
Lines: 12