[Libreoffice-bugs] [Bug 142307] Upgrade SSE2 sum to AVX512 sum with Neumanier

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=142307

--- Comment #1 from dante19031999 at gmail.com ---
In the Kahan sum patch .b has pointed me here:
http://blog.zachbjornson.com/2019/08/11/fast-float-summation.html

With that new information I believe I should be able to pull this off.
If the info is correct it should be faster and more precise.
It may also be possible using it in scmatrix summation code.
And if some conditions are met would be possible for 7.3 to add great speed
improvements to statistical functions.

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