1996-05-23 - Re: The Crisis with Remailers

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From: R.Hirschfeld@cwi.nl
To: perry@piermont.com
Message Hash: da1dd04afff7aae70ea07b731b43d44b886650fac16d616252a51bddf48c8821
Message ID: <9605222009.AA04459=ray@groen.cwi.nl>
Reply To: <199605221904.PAA23720@jekyll.piermont.com>
UTC Datetime: 1996-05-23 02:57:40 UTC
Raw Date: Thu, 23 May 1996 10:57:40 +0800

Raw message

From: R.Hirschfeld@cwi.nl
Date: Thu, 23 May 1996 10:57:40 +0800
To: perry@piermont.com
Subject: Re: The Crisis with Remailers
In-Reply-To: <199605221904.PAA23720@jekyll.piermont.com>
Message-ID: <9605222009.AA04459=ray@groen.cwi.nl>
MIME-Version: 1.0
Content-Type: text/plain

> Date: Wed, 22 May 1996 15:04:04 -0400
> From: "Perry E. Metzger" <perry@piermont.com>
> Floating point systems are built to do approximate math on a very wide
> range of number sizes. Accounting systems require exact math -- down
> to the cent. Floats aren't suitable.

I completely agree.  But are the usual fixed-point representations
adequate for exchange rates, where it's not a matter of "down to the
cent" but of ratios of cents and centimes?  Is an exact representation
of rationals (e.g., pairs of integers) needed?