#10734: Improve matrix_modn_sparse methods for converting to dense and taking
submatrices
------------------------------+---------------------------------------------
Reporter: tornaria | Owner: was
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-5.0
Component: linear algebra | Keywords:
Work_issues: | Upstream: N/A
Reviewer: William Stein | Author: Gonzalo Tornaria
Merged: | Dependencies:
------------------------------+---------------------------------------------
Changes (by davidloeffler):
* status: needs_review => needs_work
Comment:
Looks like the patchbot is getting the same failures, under both 4.8 and
5.0.beta7. I'm afraid that's "needs work", then. Here's an example of the
kind of error that's coming up:
{{{
sage -t -force_lib devel/sage-10734/sage/matrix/matrix_modn_sparse.pyx
**********************************************************************
File
"/Users/patchbot/sage-4.8/devel/sage-10734/sage/matrix/matrix_modn_sparse.pyx",
line 635:
sage: A.dense_submatrix(24,24,3,3)
Exception raised:
Traceback (most recent call last):
File "/Users/patchbot/sage-4.8/local/bin/ncadoctest.py", line 1231,
in run_one_test
self.run_one_example(test, example, filename, compileflags)
File "/Users/patchbot/sage-4.8/local/bin/sagedoctest.py", line 38,
in run_one_example
OrigDocTestRunner.run_one_example(self, test, example, filename,
compileflags)
File "/Users/patchbot/sage-4.8/local/bin/ncadoctest.py", line 1172,
in run_one_example
compileflags, 1) in test.globs
File "<doctest __main__.example_10[4]>", line 1, in <module>
A.dense_submatrix(Integer(24),Integer(24),Integer(3),Integer(3))###line
635:
sage: A.dense_submatrix(24,24,3,3)
File "matrix_modn_sparse.pyx", line 655, in
sage.matrix.matrix_modn_sparse.Matrix_modn_sparse.dense_submatrix
(sage/matrix/matrix_modn_sparse.c:11628)
M = self.new_matrix(nrows, ncols, sparse=False)
TypeError: Cannot convert
sage.matrix.matrix_modn_dense_float.Matrix_modn_dense_float to
sage.matrix.matrix_mod_dense.Matrix_mod_dense
**********************************************************************
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10734#comment:12>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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