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 r20880 = x;
        double r20881 = cosh(r20880);
        double r20882 = asin(r20881);
        double r20883 = r20880 + r20882;
        return r20883;
}