luke.leighton at gmail.com
Thu Sep 12 04:36:13 BST 2019
ah. someone kindly informed me about the IEEE754-2019 standard being
released a few months ago, so i updated the table to include IEEE754.
i hadn't realised that IEEE754 has such an extensive (and similar) set of
functions. this strengthens the case for these being scalar RV opcodes
because, well, they're part of IEEE754.
also, whoops, i also didn't realise that rootn (and others), n is
*integer*. this led me to properly investigate, and there are a couple of
operations that were overlooked: pown, powr, rootn (but interestingly no
"root" in IEEE754-2019, despite lack of accuracy at the extreme ends).
yes those are present as opencl extended instructions:
More information about the libre-riscv-dev