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 r18607 = x;
        double r18608 = cosh(r18607);
        double r18609 = asin(r18608);
        double r18610 = r18607 + r18609;
        return r18610;
}