[Bug libstdc++/101794] std::lerp with NaN input does not result in NaN

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101794

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The section of std::lerp in the standard does not define what value should be
returned if t is nan. I have not tried to find out what other parts of the
standard say but I think this might be just unspecified area of the standard
...