On 07/10/17 06:55, Alex Henrie wrote: > +float CDECL MSVCR120_expm1f(float x) > +{ > +#ifdef HAVE_EXPM1F > + return expm1f(x); > +#else > + return exp(x) - 1; > +#endif > +} Please set errno on invalid arguments. Thanks, Piotr