[Maxima-bugs] [ maxima-Bugs-1633149 ] sum bug that never happens

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Bugs item #1633149, was opened at 2007-01-11 05:58
Message generated for change (Comment added) made by robert_dodier
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Category: Lisp Core
Group: None
Status: Open
Resolution: None
Priority: 1
Private: No
Submitted By: Barton Willis (willisbl)
Assigned to: Nobody/Anonymous (nobody)
Summary: sum bug that never happens

Initial Comment:
In simpsum1, I see:
 
(setq sgn ($asksign ex))
		 (cond ((eq sgn '$pos) '$inf)
		       ((eq sgn '$neg) '$minf)
		       ((eq sgn '$zero) 0)
		       (t `((%sum simp) ,ex ,lo ,hi))))

The t clase should be `((%sum simp) ,ex ,i ,lo ,hi))).
But this bug should never get triggered. Actually,
I suppose the t clause should substitute back to 
the original sum index. Also, if it were up to me,
I would change $asksign to csign.

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>Comment By: Robert Dodier (robert_dodier)
Date: 2007-01-12 18:28

Message:
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If you want to make those changes, I would say go ahead.

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