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Re: [Chicken-users] EQV? and NaN


From: Felix
Subject: Re: [Chicken-users] EQV? and NaN
Date: Mon, 11 Jul 2011 23:04:09 +0200 (CEST)

From: John Cowan <address@hidden>
Subject: Re: [Chicken-users] EQV? and NaN
Date: Mon, 11 Jul 2011 16:58:09 -0400

> Felix scripsit:
> 
>> "(eqv? +nan +nan)" being #t would mean violation of R5RS.
> 
> Technically, yes.  But R5RS didn't anticipate the strange behavior of
> NaN.  Furthermore, the discrepancy doesn't seem to bother the developers
> and users of Gauche, Gambit, Bigloo, Kawa, Scheme48, Chibi, or STklos,
> all of which are R5RS systems.

Just for the record, and to spare you the typing: I generally don't care
what all of those systems do. The only authorities that I find acceptable
are R5RS, common sense, performance and convenience.


cheers,
felix



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