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 r8157 = a;
        double r8158 = b;
        double r8159 = r8157 + r8158;
        double r8160 = c;
        double r8161 = r8159 + r8160;
        double r8162 = 2.0;
        double r8163 = r8161 / r8162;
        double r8164 = r8163 - r8157;
        double r8165 = r8163 * r8164;
        double r8166 = r8163 - r8158;
        double r8167 = r8165 * r8166;
        double r8168 = r8163 - r8160;
        double r8169 = r8167 * r8168;
        double r8170 = sqrt(r8169);
        return r8170;
}