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

[Andrew Waterman]

On Thu, Jul 11, 2019 at 2:05 PM Tommy Murphy <tommy_murphy at hotmail.com>
wrote:

> 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.?
>

D is defined to depend on F (
https://github.com/riscv/riscv-isa-manual/blob/0420fc341ad951340ba3b9e2372768a5421e22d5/src/d.tex#L7),
and Q is defined to depend on D (
https://github.com/riscv/riscv-isa-manual/blob/0420fc341ad951340ba3b9e2372768a5421e22d5/src/q.tex#L7
).


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