Maxima -- GPL CAS based on DOE-MACSYMA / Bugs / #2650 mat_function doesn't handle degenerate case

#2650 mat_function doesn't handle degenerate case

Milestone: None

Status: closed

Owner: Rupert Swarbrick

Labels: None

Priority: 5

Updated: 2014-02-19

Created: 2013-10-29

Creator: Stavros Macrakis

Private: No

mat_function(identity,matrix([a])) => Error: "argument must be a non-atomic expression"

Presumably mat_function(f,matrix([a])) == matrix([f(a)]).

Discussion

Stavros Macrakis - 2013-10-29

Sorry, I should have mentioned this is using the (updated) diag.mac package in share.

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Rupert Swarbrick - 2014-02-19

Oh dear, that's my fault. I've just pushed a fix (54f9742), although I'm not convinced that Maxima isn't doing something weird. The behaviour that triggers the bug in diag.mac is that matrix([1]) . matrix([1]) yields 1, rather than a matrix.

The result still isn't brilliant, since it turns into matrix([1]) . a, but at least it doesn't explode any more...

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Rupert Swarbrick - 2014-02-19

status: open --> closed

assigned_to: Rupert Swarbrick
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