Add support to nexttoward{,f,l}

[Alex Henrie]

On Tue, Apr 17, 2018 at 10:31 AM Alex Henrie <alexhenrie24 at gmail.com> wrote:

> On Tue, Apr 17, 2018 at 10:07 AM Johan Oudinet <johan.oudinet at gmail.com>
wrote:
> >
> > Hi,
> >
> > I've encountered a wine error when running an application, saying that
> > a function is not implemented:
> > wine: Call from 0x7b43ce3c to unimplemented function
> > api-ms-win-crt-math-l1-1-0.dll.nexttowardf, aborting
> >
> > I've looked into the wine's git repository and found that this
> > function is declared as a stub, while the equivalent nextafter
> > variants have been defined since
> > 072f34be730761faa2fabefa8e4a3306d19c4a63
> >
> > I'm new to wine development and know nothing about windows but I think
> > I should be able to enable nexttoward, nexttowardf, and nexttowardl
> > functions, just by following the modifications in the commit above.
> >
> > According to cppreference, such functions have been added at the same
time:
> > http://en.cppreference.com/w/cpp/numeric/math/nextafter
> >
> > I'd like your opinion before I submit a patch here.

> Hello Johan, and thanks for your interest in contributing to Wine! Your
proposal sounds like a great way to get started with Wine development.
Instructions for submitting patches are at <
https://wiki.winehq.org/Submitting_Patches>.

> When implementing these functions, be careful to not look at any of the
publicly available Microsoft C Runtime source code. Use MSDN documentation
or ask for help here if you get confused. Wine does not include a C++
runtime, so you can ignore any documentation that's specifically for C++.

Correction: Wine does include a C++ runtime, just not C++ headers. The C
and C++ documentation of nexttoward[fl] should be the same, so ignore that
last sentence I wrote...

-Alex