[Cfp-interest 3358] Re: Fwd: [isocpp-wg14/wg21-liaison] SG22 telco : P3477R0 and P2746R0

[Nina Dinka Ranns]

Hi Hans,

thank you for that.

I'll schedule an SG22 meeting so we can put an SG22 stamp on it before
going back to WG21.

Best,
Nina

On Thu, 9 Jan 2025 at 19:52, Hans Boehm <boehm at acm.org> wrote:
>
> From my perspective, for P2746, yes.
>
> The expectation is that floating point rounding modes will end up as a
> point of divergence between the two languages, but it's unclear how to
> avoid that. The C23 static rounding mode pragma is not likely to be
> accepted into C++. The current C++ library proposal relies on member
> functions, and is not C friendly, though that could possibly be
> addressed. The IEEE standard seems to target a scope-based mechanism
> for setting rounding modes, which some of us dislike. Thus the CFP
> group would have to stretch its charter to accept a library mechanism,
> along the lines of P2746.
>
> On Thu, Jan 9, 2025 at 3:07 AM Nina Dinka Ranns
> <dinka.ranns at googlemail.com> wrote:
> >
> > Hello,
> >
> > has this been appropriately discussed ?
> >
> > If so, I would like to schedule an SG22 meeting for it.
> >
> > Thank you,
> > Nina
> >
> > On Tue, 7 Jan 2025 at 16:13, Hans Boehm <boehm at acm.org> wrote:
> > >
> > > Thank you! Fixed in the next revision.
> > >
> > > Hans
> > >
> > > On Sun, Jan 5, 2025 at 8:39 AM Damian McGuckin <damianm at esi.com.au> wrote:
> > > >
> > > > On Sat, 4 Jan 2025, Damian McGuckin wrote:
> > > >
> > > > > Unlike R0, it is in 2024, not 2023. So
> > > > >
> > > > >       https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p2746r6.pdf
> > > >
> > > > Unless I am opening the wrong file, .....
> > > >
> > > > In that document, the link in the PDF to apparently
> > > >
> > > >         High Perforance Correctly Rounded Math LIbraries
> > > >         for 32-bit Floating Point Representations
> > > >
> > > > by Lim and Nagarette, which is quoted as
> > > >
> > > >         https://dl.acm.org/doi/abs/10.1145/3385412.3386004
> > > >
> > > > resolves to:
> > > >
> > > >         Debugging and detecting numerical errors in computation with posits
> > > >
> > > > (by CHowdhray and those Authors).
> > > >
> > > > The correct link should be
> > > >
> > > >         https://dl.acm.org/doi/pdf/10.1145/3453483.3454049
> > > >
> > > > Thanks - Damian