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Re: infinities reformulated
| 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.