|
Nitpick with FLOOR etc.
Michael Sperber
(07 Jul 2005 08:46 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(09 Jul 2005 00:50 UTC)
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Re: Nitpick with FLOOR etc.
Michael Sperber
(11 Jul 2005 06:55 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(16 Jul 2005 02:01 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(16 Jul 2005 08:38 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(16 Jul 2005 17:42 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(16 Jul 2005 09:12 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(16 Jul 2005 18:19 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(17 Jul 2005 17:23 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(17 Jul 2005 17:35 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(17 Jul 2005 22:43 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(18 Jul 2005 01:43 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(18 Jul 2005 02:31 UTC)
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Re: Nitpick with FLOOR etc.
bear
(18 Jul 2005 05:59 UTC)
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Re: Nitpick with FLOOR etc. Aubrey Jaffer (18 Jul 2005 18:57 UTC)
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Re: Nitpick with FLOOR etc.
bear
(19 Jul 2005 01:35 UTC)
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Re: Nitpick with FLOOR etc.
Alan Watson
(19 Jul 2005 20:30 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(21 Jul 2005 17:35 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(24 Jul 2005 23:15 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(18 Jul 2005 03:24 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(18 Jul 2005 18:24 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(18 Jul 2005 18:41 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(21 Jul 2005 23:36 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(22 Jul 2005 00:50 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(25 Jul 2005 00:54 UTC)
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Re: Nitpick with FLOOR etc.
bear
(27 Jul 2005 15:56 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(01 Aug 2005 16:33 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(25 Jul 2005 01:16 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(25 Jul 2005 02:38 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(28 Jul 2005 01:11 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(28 Jul 2005 18:15 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(01 Aug 2005 16:59 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(02 Aug 2005 13:58 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(18 Jul 2005 17:39 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(18 Jul 2005 18:15 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(20 Jul 2005 19:24 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(20 Jul 2005 21:35 UTC)
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Re: Nitpick with FLOOR etc.
bear
(20 Jul 2005 22:41 UTC)
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Re: Nitpick with FLOOR etc.
Paul Schlie
(20 Jul 2005 22:47 UTC)
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Re: Nitpick with FLOOR etc.
Aubrey Jaffer
(21 Jul 2005 01:31 UTC)
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| Date: Sun, 17 Jul 2005 22:59:12 -0700 (PDT)
| From: bear <xxxxxx@sonic.net>
|
| One thing that is clear from inspecting code that actually
| uses FLOOR, CEILING, etc, is that there is a very strong
| usage pattern; the procedure inexact->exact is almost ALWAYS
| called on the result.
Originally, I was going to propose changing ROUND, etc to return
exacts; but an inexact FLOOR was needed to avoid exact vs inexact
range problems in extending MODULO to the reals:
(define (modulo x1 x2)
(if (and (integer? x1) (integer? x2))
(integer-modulo x1 x2)
(- x1 (* x2 (floor (/ x1 x2))))))
| I think standard library macros ought to capture and standardize
| this usage.
|
| (xfloor x) <==> (inexact->exact (floor x))
| (xceiling x) <==> (inexact->exact (ceiling x)
| (xround x) <==> (inexact->exact (round x))
Why macros when procedures would be equivalent?
Also, is the prefixed `x' for exact; wouldn't `e' be more Schemely?