On Mon 31 Jan 2011 20:53, Mark H Weaver writes:
> Given that everyone agrees that `eqv?' must distinguish 0 from 0.0, it
> is already not useful as a numerical `='. Any program that uses it this
> way is asking for trouble. Therefore, I don't have qualms about keeping
> our existing behavior, n
> From:Mark H Weaver
> To:Mike Gran
> Cc:"guile-devel@gnu.org"
> Sent:Monday, January 31, 2011 2:42 PM
> Subject:Re: Equality predicates, signed zeroes, R5RS and R6RS
>
> Mike Gran writes:
> > As an aside, as of a couple of months ago, it was possible to create
> > the following seven versions
Mike Gran writes:
> As an aside, as of a couple of months ago, it was possible to create
> the following seven versions of zero in Guile using the default reader.
>
> 0, ±0.0, ±0.0±0.0i
Really? I don't understand how this could have happened. mem2complex
uses scm_make_rectangular to create com
> From:Mark H Weaver
> To:guile-devel@gnu.org
> Cc:Andy Wingo ; Taylor R Campbell
> Sent:Monday, January 31, 2011 11:53 AM
> Subject:Equality predicates, signed zeroes, R5RS and R6RS
>
> An issue has come to my attention that deserves wider discussion.
>
> Since at least Guile 1.8, (= 0.0 -0.0
