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 r8020 = x;
        double r8021 = cosh(r8020);
        double r8022 = asin(r8021);
        double r8023 = r8020 + r8022;
        return r8023;
}