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This page is part of the web mail archives of SRFI 67 from before July 7th, 2015. The new archives for SRFI 67 contain all messages, not just those from before July 7th, 2015.

*To*: srfi-67@xxxxxxxxxxxxxxxxx*Subject*: Circular structures [was Re: IEEE 754 floating-point arithmetic is not completely ordered]*From*: Bradley Lucier <lucier@xxxxxxxxxxxxxxx>*Date*: Wed, 20 Apr 2005 15:35:35 +0200*Delivered-to*: srfi-67@xxxxxxxxxxxxxxxxx*In-reply-to*: <426134F8.3070307@xxxxxxxxxxxx>*Old-date*: Mon, 18 Apr 2005 12:26:12 -0500*References*: <y9ld5sux2j1.fsf@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <426134F8.3070307@xxxxxxxxxxxx>*User-agent*: Gnus/5.110002 (No Gnus v0.2) XEmacs/21.5 (chives, berkeley-unix)

On Apr 16, 2005, at 10:53 AM, Jens Axel Søgaard wrote: > Bradley Lucier wrote: > >> Well, it depends on what your goal is. ... > Here are some potential goals: > ... > 3) default-compare should define a total order on almost all Scheme > values What is "almost all"? How do a and b compare in the following? [descartes:~/programs/folding/2] lucier% gsc loading /usr/local/Gambit-C/gambcext.scm Gambit Version 4.0 beta 12 > (define a (cons #f #f)) > (set-car! a a) > (set-cdr! a a) > (define b (cons #f #f)) > (set-car! b b) > (set-cdr! b b) > (equal? a b) ;;; doesn't terminate Is default-compare compatible with equal? Brad

**Follow-Ups**:**Re: Circular structures [was Re: IEEE 754 floating-point arithmetic is not completely ordered]***From:*Jens Axel Søgaard

**References**:**Re: IEEE 754 floating-point arithmetic is not completely ordered***From:*Bradley Lucier

**Re: IEEE 754 floating-point arithmetic is not completely ordered***From:*Jens Axel Søgaard

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