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*To*: Aubrey Jaffer <agj@xxxxxxxxxxxx>*Subject*: Re: Nitpick with FLOOR etc.*From*: Paul Schlie <schlie@xxxxxxxxxxx>*Date*: Sun, 17 Jul 2005 23:24:49 -0400*Cc*: <sperber@xxxxxxxxxxxxxxxxxxxxxxxxxxx>, <srfi-70@xxxxxxxxxxxxxxxxx>*Delivered-to*: srfi-70@xxxxxxxxxxxxxxxxx*In-reply-to*: <BF00818E.ADB9%schlie@xxxxxxxxxxx>*User-agent*: Microsoft-Entourage/11.1.0.040913

> From: Paul Schlie <schlie@xxxxxxxxxxx> >> The possibility that systems may implement exact infinities rules out >> having the error be with INEXACT->EXACT (passed real infinities). > > - so what? (as personally I'd rather have an "exact" infinity returned > for a calculation that would otherwise potentially crash the program > attempting to allocate GigaBytes of memory to store an arbitrarily large > "exact" result, or an "inexact" infinity which is known to possibly > be smaller than the largest representable "exact" value.) sorry, I'm not sure what I was thinking about when I responded to your statement, but I'll try again: - maybe that implies that infinities and their reciprocals are in a class by themselves, as neither are warranted to have some minimal precision, as both exact and inexact representations have, but rather represent an underflow of the minimal precision otherwise warranted, thereby effectively representing the bounds of an implementation's exact/inexact representations? ... Thereby it becomes possible that: (inexact->exact #i1/0) => #i1/0 Merely indicating the value was greater in magnitude than the greatest representable inexact value, but less than the greatest representable exact value, but without a minimally sufficient resolvable precision? Implying something along the line of: #e-1/0 .. #e-xxx .. #e-0/1 0 ... | | | | | #i-1/0 .. #i-xxx .. #i-0/1 0 ...

**Follow-Ups**:**Re: Nitpick with FLOOR etc.***From:*Aubrey Jaffer

**References**:**Re: Nitpick with FLOOR etc.***From:*Paul Schlie

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