#8276: Make the one(), identity_matrix() and zero_matrix() cached and immutable.
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Reporter: hivert | Owner: hivert
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.3.3
Component: algebra | Keywords: One mutable.
Author: Florent Hivert | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by hivert):
I just added a third patch which fixes a non working optimization when
creating the zero matrix from {{{MS(0)}}} or {{{MS()}}}. They are now
nearly as fast as calling {{{copy(MS.zero_matrix())}}}.
Apply this patch after the two others.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8276#comment:5>
Sage <http://www.sagemath.org>
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