[PATCH 1/5] libstdc++: Import the fast_float library

[Florian Weimer]

* Jonathan Wakely:

> On Tue, 16 Nov 2021 at 08:01, Florian Weimer wrote:
>>
>> * Patrick Palka via Libstdc:
>>
>> > This copies the fast_float library[1] into the compiled-in library
>> > sources.  We're going to use this library in our floating-point
>> > std::from_chars implementation for faster and more portable parsing of
>> > binary32/64 decimal strings.
>> >
>> > [1]: https://github.com/fastfloat/fast_float
>> >
>> > Series tested on x86_64, i686, ppc64, ppc64le and aarch64, does it
>> > look OK for trunk?
>>
>> Missing Signed-off-by:?
>
> That's not needed if Patrick is still covered by an FSF assignment.

But the submission is not covered by the FSF assignment.

> I think we could use Apache as well, because this code isn't going to
> appear in public headers so the problematic clause doesn't apply. But
> MIT is simpler.

Okay, so you consider dynamic linking only?  I think the historic
libstdc++ license is more permissive than Apache or MIT when used with
GCC.  There aren't any notification or other requirements.

Thanks,
Florian