Cannot sample enough valid points. (more)

\[x + \sin^{-1} \left(\cosh x\right)\]
x + \sin^{-1} \left(\cosh x\right)
double f(double x) {
        double r21990 = x;
        double r21991 = cosh(r21990);
        double r21992 = asin(r21991);
        double r21993 = r21990 + r21992;
        return r21993;
}