Subject: Fwd: [Ecls-list] ECL now rounds rationals
From: Robert Dodier
Date: Mon, 7 Dec 2009 10:21:47 -0700
I think has some bearing on failed tests in the Maxima test suite.
Robert Dodier
---------- Forwarded message ----------
From: Juan Jose Garcia-Ripoll <juanjose.garciaripoll at googlemail.com>
Date: Fri, Dec 4, 2009 at 5:50 PM
Subject: [Ecls-list] ECL now rounds rationals
To: list-ecl <ecls-list at lists.sourceforge.net>
* Visible changes:
?- When converting rationals to floats, ECL now rounds instead of using the
? routine in GMP, which truncates.
(loop for type in '(short-float single-float double-float long-float)
? ? ? for i from 60 to 70
? ? ? nconc (loop with value = (ash 1 i)
? ? ? ? ? ? ? ?with expected = (coerce 1 type)
? ? ? ? ? ? ? ?for j from 0 to 10
? ? ? ? ? ? ? ?for x = (- value j)
? ? ? ? ? ? ? ?for r = (/ (1- x) x)
? ? ? ? ? ? ? ?for f1 = (coerce r type)
? ? ? ? ? ? ? ?for f2 = (- (coerce (- r) type))
? ? ? ? ? ? ? ?unless (and (= f1 expected) (= f2 expected))
? ? ? ? ? ? ? ?collect r))
=> NIL
Before it produced a list of rationals it failed to round.
--
Instituto de F?sica Fundamental, CSIC
c/ Serrano, 113b, Madrid 28006 (Spain)
http://juanjose.garciaripoll.googlepages.com
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