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Re: [f-cpu] Re: Floating-Point?
On Wed, 15 Aug 2001, nicO wrote:
> Michael Riepe a écrit :
> >
> > On Tue, Aug 14, 2001 at 03:25:04PM +0200, Yann Guidon wrote:
>
> > BTW: I think we need another instruction that converts 32-bit FP to 64-bit
> > and vice versa (and maybe also does the mix/expand/sdup thingy for FP).
>
> In sparc, there is no 80 bits float but 128 bits (2 registers used in
> the same time). We don't need 1 cycle multiplication so it could be done
> for the fcpu.
Actually there never was an implementation of 128bit precision
as far as I know. There is a chapter regarding this topic in
the SPARC V8 manual.
JG
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