From: Lawrence Bottorff <borgauf@gmail.com>
To: guile-user@gnu.org
Subject: Simulating rational number addition/subtraction
Date: Wed, 24 Feb 2016 22:27:45 +0000 [thread overview]
Message-ID: <CAFAhFSXeLgX73qZrF5ns1wkRHZZZ3sjsNKSBOXKWcTsXxn+hag@mail.gmail.com> (raw)
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With guile (and a few other Schemes/Lisps) you can directly add fractions
or rational numbers:
(+ 1/2 1/12)
=> 7/12
It's like magic, no? Anyway, I'm trying -- for educational purposes -- to
reproduce this functionality. But right out of the blocks I'm stuck trying
to figure out how to handle incoming parameters. So far I've got
(define (myrat a b)
. . .)
(define (myrat a b c d)
. . .)
where numerator and denominator are given separately, as well as
(define (myrat . fracparams)
. . .)
which still has my basic problem, namely, can one parameter hold both parts
of a rational number, then allow the numerator and denominator to be peeled
off and worked on, i.e., something like
(let ((num1 numepeeler(a))
(denom1 denompeeler(a)
LB
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next reply other threads:[~2016-02-24 22:27 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-24 22:27 Lawrence Bottorff [this message]
2016-02-24 23:32 ` Simulating rational number addition/subtraction dsmich
2016-02-25 7:07 ` tomas
2016-02-26 13:01 ` Alex Vong
2016-02-25 6:52 ` Jan Wedekind
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