[libre-riscv-dev] [isa-dev] Re: FP reciprocal sqrt extension proposal

[lkcl]

Just a thought: should this be merged into Ztrans? A case could be nade either way.

* The Libre RISCV FPDIV pipeline also computes SQRT and RSQRT
* Some OTFC pipeline designs do RSQRT "for free"
* However, if doing RSQRT chances are high it will be part of a design that needs EXP, LOG etc anyway.
* CORDIC can do a ton of algorithms including SQRT, RSQRT, LOG, SIN etc.

Thoughts?

L.