msvcrt: remove errno EDOM from atan, exp and tanh

[Piotr Caban]

Hi,

On 03/22/15 14:50, Kevin Chan wrote:
>   double CDECL MSVCRT_atan( double x )
>   {
> -  if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
>     return atan(x);
>   }
I've done a little more testing. The function is not setting errno in 
INF and -INF case. It does set errno  to EDOM when argument is NAN.

Thanks,
Piotr