Function complex__atanh

inst/include/Rcpp/sugar/functions/complex.h:198–206

}

inline Rcomplex complex__atanh(Rcomplex z){
    Rcomplex r, b;
    b.r = -z.i;
    b.i =  z.r;
    Rcomplex a = complex__atan(b);
    r.r =  a.i;
    r.i = -a.r;
    return r ;
}
inline Rcomplex complex__sinh(Rcomplex z)
{
    Rcomplex r, b;