Cannot sample enough valid points. (more)

\[0.0 \lt a \land 0.0 \lt b \land 0.0 \lt c\]
\[\sqrt{\left(\left(\frac{\left(a + b\right) + c}{2} \cdot \left(\frac{\left(a + b\right) + c}{2} - a\right)\right) \cdot \left(\frac{\left(a + b\right) + c}{2} - b\right)\right) \cdot \left(\frac{\left(a + b\right) + c}{2} - c\right)}\]
\sqrt{\left(\left(\frac{\left(a + b\right) + c}{2} \cdot \left(\frac{\left(a + b\right) + c}{2} - a\right)\right) \cdot \left(\frac{\left(a + b\right) + c}{2} - b\right)\right) \cdot \left(\frac{\left(a + b\right) + c}{2} - c\right)}
double f(double a, double b, double c) {
        double r2671 = a;
        double r2672 = b;
        double r2673 = r2671 + r2672;
        double r2674 = c;
        double r2675 = r2673 + r2674;
        double r2676 = 2.0;
        double r2677 = r2675 / r2676;
        double r2678 = r2677 - r2671;
        double r2679 = r2677 * r2678;
        double r2680 = r2677 - r2672;
        double r2681 = r2679 * r2680;
        double r2682 = r2677 - r2674;
        double r2683 = r2681 * r2682;
        double r2684 = sqrt(r2683);
        return r2684;
}