[Bug libstdc++/114018] std::nexttoward is not implemented for C++23-FP-Types

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114018

--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #8)
> So, do we need to define those and std::unreachable (); in their bodies or
> something similar?

No, it needs to be ill-formed to call them, which is already the case as the
godbolt example in comment 0 shows:

<source>:13:28: error: no matching function for call to 'nexttoward(const T&,
const T&)'

I think there's nothing to do here.