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lkcl
<lkcl@web>
Mon, 7 Mar 2022 17:06:17 +0000
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IkiWiki
<ikiwiki.info>
Mon, 7 Mar 2022 17:06:17 +0000
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openpower/sv/bitmanip.mdwn
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a/openpower/sv/bitmanip.mdwn
b/openpower/sv/bitmanip.mdwn
index 444a935ced390ee0a9cb168884ac6694a92f0ed7..01ac2649266ce42ff7d3fe68a18685ac2214273a 100644
(file)
--- a/
openpower/sv/bitmanip.mdwn
+++ b/
openpower/sv/bitmanip.mdwn
@@
-532,7
+532,9
@@
arithmetic the modulo is to be set in an SPR
## Twin Butterfly (Tukey-Cooley) Mul-add-sub
used in combination with SV FFT REMAP to perform
-a full NTT in-place
+a full NTT in-place. possible by having 3-in 2-out,
+to avoid the need for a temp register. RS is written
+to as well as RT.
gffmadd RT,RA,RC,RB (Rc=0)
gffmadd. RT,RA,RC,RB (Rc=1)