Re: correctly rounded mathematical functions

On Thu, Jan 6, 2022 at 4:12 AM Paul Zimmermann <[email protected]> wrote:
>
>        Dear Joel,
>
> > I hate to ask since I know this is unrelated but what is the best source for
> > properly licensed and accurate long double methods. I am still hoping that
> > part of an RTEMS GSoC project is to merge them from somewhere into
> > newlib.
>
> as far as I know, four libraries provide long double functions:
> GNU libc, Intel Math Library, OpenLibm and Musl. See Table 11 from
> https://members.loria.fr/PZimmermann/papers/accuracy.pdf.

Is the FreeBSD long double support related to any of those libraries?

https://github.com/freebsd/freebsd-src/tree/main/lib/msun

Any comments on their implementation?

> And of course we also plan to provide (correctly rounded) long double
> functions, acos and cbrt are already available on the CORE-MATH page.
>
> > And I'm thrilled at all the autoconf/automake work. That has really
> > been a challenge
> > for students.
>
> Best regards,
> Paul