[libcxx-commits] [libcxx] [libc++][test] Adjust expected hexfloat format (PR #95011)

[David Tenty via libcxx-commits]

daltenty wrote:

> I think the printf behaviour your seeing is invalid. The test sets a precision of zero, and according to the C standard:
> 
Actually turns out the C++ standard has a specific carve-out for precision in the case of hexfloat (i.e. `ios_base::fixed | ios_base::
scientific` where no precision is specified in the format string it passes, so this is actually conformant.


https://github.com/llvm/llvm-project/pull/95011