[Libre-soc-isa] [Bug 923] we missed some important fp ops

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Thu Sep 8 22:19:14 BST 2022


--- Comment #6 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
hang on...
p181 v3.1 there's notes

if a >= b then x <- y  fsub fs,fa,fb
else x <- z            fsel fx,fs,fy,fz

so no, we can't add fmaxss or fminss,
they'll get rejected because of the
macro-fusion advice.

the only reason to add fminss/fmaxss/fmin/fmax
would be because updating to IEEE754-2019. which
is probably good enough.



minmag(a,b) = |a|<|b| ? a : b
maxmag(a,b) = |a|>|b| ? a : b

not seeing anything like this - good idea to add them.




blerk!  that's awful! (i mean, the software).  yep, good call.




blerk. i don;t get it. but i can understand other people do :)


yep all good here.

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