[Bug libstdc++/114863] std::format applying grouping to nan's and inf's

[lcarreon at bigpond dot net.au via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114863

--- Comment #7 from Leo Carreon <lcarreon at bigpond dot net.au> ---
I'm assuming the fix is for all floating point types not just double.