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*To*: tb@xxxxxxxxxx*Subject*: Re: infinities reformulated*From*: Aubrey Jaffer <agj@xxxxxxxxxxxx>*Date*: Thu, 2 Jun 2005 12:12:28 -0400 (EDT)*Cc*: mathematica@xxxxxxxxx, alexshinn@xxxxxxxxx, srfi-70@xxxxxxxxxxxxxxxxx*Delivered-to*: srfi-70@xxxxxxxxxxxxxxxxx*In-reply-to*: <874qcgg4uf.fsf@xxxxxxxxxxxxxxxxx> (message from Thomas Bushnell BSG on Thu, 02 Jun 2005 08:23:36 -0700)*References*: <20050531071658.EC10C1167@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20050531234805.0EC7F1B77B4@xxxxxxxxxxxxxxxx> <874qcgg4uf.fsf@xxxxxxxxxxxxxxxxx>

| From: Thomas Bushnell BSG <tb@xxxxxxxxxx> | Date: Thu, 02 Jun 2005 08:23:36 -0700 | | Aubrey Jaffer <agj@xxxxxxxxxxxx> writes: | | > So in a Scheme implementation which has "arbitrarily big" precision, | > how many digits is (sqrt 2)? How many digits is (sin 7/5)? | | There is no function "precision-of", so there is no need for an | answer. Arbitrarily big precision arithmetic (generally) works pretty | well; you carry around symbolic representations and operate on them. To first order: (define (precision-of x) (string-length (number->string x))) R5RS requires all numbers to have external representations; and it specifies the allowed formats.

**Follow-Ups**:**Re: infinities reformulated***From:*Thomas Bushnell BSG

**Re: infinities reformulated***From:*bear

**References**:**Re: infinities reformulated***From:*Chongkai Zhu

**Re: infinities reformulated***From:*Aubrey Jaffer

**Re: infinities reformulated***From:*Thomas Bushnell BSG

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