Sujet : Re: Parsing timestamps?
De : no.email (at) *nospam* nospam.invalid (Paul Rubin)
Groupes : comp.lang.forthDate : 09. Jul 2025, 23:10:30
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <87a55dxbft.fsf@nightsong.com>
References : 1 2 3 4 5 6 7 8
User-Agent : Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux)
dxf <
dxforth@gmail.com> writes:
As for SSE2 it wouldn't exist if industry didn't consider
double-precision adequate.
SSE2 is/was first and foremost a vectorizing extension, and it has been
superseded quite a few times, indicating it was never all that
adequate. I don't know whether any of its successors support extended
precision though.
W. Kahan was a big believer in extended precision (that's why the 8087
had it from the start). I believes IEEE specifies both 80 bit and 128
bit formats in addition to 64 bit. The RISC-V spec includes encodings
for 128 bit IEEE but I don't know if any RISC-V hardware actually
implements it. I think there are some IBM mainframe CPUs that have it.