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Re: how to detect division by zero?


From: Marius Vollmer
Subject: Re: how to detect division by zero?
Date: Tue, 20 Jan 2004 23:07:15 +0100
User-agent: Gnus/5.1002 (Gnus v5.10.2) Emacs/21.3 (gnu/linux)

Roland Orre <address@hidden> writes:

> Of some reason does the followoing return false
> guile-user> (= +nan.0 (/ 0.0 0.0))

In addition to nan? you can also use 'eqv?' for comparison:

    guile> (eqv? +nan.0 (/ 0.0 0.0))
    #t

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