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 r8391 = x;
        double r8392 = cosh(r8391);
        double r8393 = asin(r8392);
        double r8394 = r8391 + r8393;
        return r8394;
}