View Single Post
Old 2020-08-03, 23:23   #42
rogue
 
rogue's Avatar
 
"Mark"
Apr 2003
Between here and the

5,953 Posts
Default

Quote:
Originally Posted by Happy5214 View Post
Yeah, no 80-bit floats on ARM. ARM does have NEON, which appears analogous to SSE and is available on all 64-bit ARM processors. There is a defined instruction set extension for larger vectors called Scalable Vector Extension (SVE), which provides an interface for vectors from 128-bit to 2048-bit, with the hardware register size being set at any 128-bit interval in that range. However, it doesn't appear that SVE is currently implemented in any commercially available general-purpose ARM CPU as of ~2018 (phones and SOCs included), so it's probably not worth coding at this point.
I have to believe that the Apple ARM chips they intend to use on the new MacBooks will support SVE, but I haven't found anything to explicitly state that. It is possible that they might only reserve chips with that capability to their higher end offerings when those are switched over.
rogue is offline   Reply With Quote