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 r21725 = x;
        double r21726 = cosh(r21725);
        double r21727 = asin(r21726);
        double r21728 = r21725 + r21727;
        return r21728;
}