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

[Tommy Murphy]

Apologies if this is slightly off topic but

(1) does support for the D extension imply support for the F extension?
(2) does support for the Q extension imply support for both D and F extensions?

Or can they all be independent - e.g. support for Q but not D or F etc.?