[PATCH v2] msvcrt: Make the cosh/sinh/tanh functions NAN preserving

[Zebediah Figura (she/her)]

On 7/16/21 7:05 AM, Martin Storsjo wrote:
> When a NAN is fed as input, return it as-is without mangling
> it through the calculation (which e.g. loses the sign of the
> input value).
> 
> This fixes a regression in a testcase of mine, after switching
> to the internal implementation of these functions.

Maybe we could add such tests to Wine as well?