[Libre-soc-bugs] [Bug 1155] O(n^2) multiplication REMAP mode(s)

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=1155

--- Comment #27 from Jacob Lifshay <programmerjake at gmail.com> ---
(In reply to Luke Kenneth Casson Leighton from comment #25)
> thoughts?

triangles are cool, needs further thought. I'm thinking we'd want a way to do
new_x = (x + y) % x_sz for diagonal matrix stuff:

e.g.:
original matrix indexes:
0 1 2 3
4 5 6 7
8 9 A B

new indexes:
0 1 2 3 -- rotated right 0
5 6 7 4 -- rotated right 1
A B 8 9 -- rotated right 2

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