[Maxima-bugs] [ maxima-Bugs-1764114 ] signum misses simp rule

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Bugs item #1764114, was opened at 2007-07-30 20:49
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Category: Lisp Core - Simplification
Group: None
Status: Open
Resolution: None
Priority: 4
Private: No
Submitted By: Barton Willis (willisbl)
Assigned to: Barton Willis (willisbl)
Summary: signum misses simp rule

Initial Comment:
(%i1) tellsimpafter(signum(x),zzz);
(%o1) [signumrule1,simpsignum]
(%i2) signum(-x);

Wrong! (%o2) should be -zzz

(%o2) -signum(x)
(%i3) ev(%);
(%o3) -zzz

The fix is easy.

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1764114&group_id=4933