From: Alain Frisch <Alain.Frisch@inria.fr>
To: skaller <skaller@users.sourceforge.net>
Cc: Ian Zimmerman <itz@buug.org>, caml-list@inria.fr
Subject: Re: [Caml-list] equality of Big_ints
Date: Mon, 10 Oct 2005 09:36:26 +0200 [thread overview]
Message-ID: <434A19FA.4080805@inria.fr> (raw)
In-Reply-To: <1128925132.7508.21.camel@rosella>
skaller wrote:
> The reason may be because the equality of integers
> isn't the same as algebraic equality of the data structures:
Indeed, but this is not about maintaining an invariant. Because of the
representation of Big_int.big_int as a pair (sign,absolute value), the
polymorphic comparison would give (-1) < (-2) if the custom comparison
were used for Nat.nat.
-- Alain
next prev parent reply other threads:[~2005-10-10 7:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-10 4:12 Ian Zimmerman
2005-10-10 6:18 ` [Caml-list] " skaller
2005-10-10 7:36 ` Alain Frisch [this message]
2005-10-10 15:02 ` skaller
2005-10-10 9:10 ` Thomas Fischbacher
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