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 r5162 = a;
        double r5163 = b;
        double r5164 = r5162 + r5163;
        double r5165 = c;
        double r5166 = r5164 + r5165;
        double r5167 = 2.0;
        double r5168 = r5166 / r5167;
        double r5169 = r5168 - r5162;
        double r5170 = r5168 * r5169;
        double r5171 = r5168 - r5163;
        double r5172 = r5170 * r5171;
        double r5173 = r5168 - r5165;
        double r5174 = r5172 * r5173;
        double r5175 = sqrt(r5174);
        return r5175;
}