#5345: [with patch, needs work] Optimize transpose for dense matrices
----------------------------+-----------------------------------------------
Reporter: rbeezer | Owner: rbeezer
Type: enhancement | Status: new
Priority: major | Milestone: sage-3.4.1
Component: linear algebra | Keywords: transpose
----------------------------+-----------------------------------------------
Comment(by ylchapuy):
I think we can obtain a much bigger speedup if we replace the inner loop:
{{{
...
for i in xrange(nr):
f.append(e[i*nc+j])
...
}}}
with
{{{
...
f.extend(e[j::nc])
...
}}}
and we should do just the same thing for antitranspose a few lines further
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5345#comment:3>
Sage <http://sagemath.org/>
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