[Libre-soc-bugs] [Bug 877] implementation and formal correctness proof for fp fused-mul-add pipeline excluding ieee754 exception flags

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Mon Jul 4 12:03:40 BST 2022


https://bugs.libre-soc.org/show_bug.cgi?id=877

Jacob Lifshay <programmerjake at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|CONFIRMED                   |IN_PROGRESS

--- Comment #1 from Jacob Lifshay <programmerjake at gmail.com> ---
I implemented fmadd, fmsub, fnmadd, and fnmsub and now just have to work out
the remaining bugs.

https://git.libre-soc.org/?p=ieee754fpu.git;a=commit;h=449176c8896dd13ae80130a3a0c8fc88026a2499

I probably got fmadd and fnmsub to work for all rounding modes, I'm currently
running the formal proofs overnight -- hopefully they won't take too long to
run.

fmsub and fnmadd have a bug which I'll debug tomorrow.

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