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Re: [Chicken-users] How to detect when you have +nan.0 or similar?
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From: |
John Cowan |
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Subject: |
Re: [Chicken-users] How to detect when you have +nan.0 or similar? |
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Date: |
Mon, 29 Jan 2007 21:04:48 -0500 |
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User-agent: |
Mutt/1.3.28i |
Matthew Welland scripsit:
> What is the right way to do this? I resorted to using :
I like the definition (lambda (f) (not (= f f)), which depends on the
fact that NaN is not numerically equal to NaN.
You can define "infinite?" as (lambda (f) (= f (+ f f))).
--
"Well, I'm back." --Sam John Cowan <address@hidden>