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 r3272 = a;
        double r3273 = b;
        double r3274 = r3272 + r3273;
        double r3275 = c;
        double r3276 = r3274 + r3275;
        double r3277 = 2.0;
        double r3278 = r3276 / r3277;
        double r3279 = r3278 - r3272;
        double r3280 = r3278 * r3279;
        double r3281 = r3278 - r3273;
        double r3282 = r3280 * r3281;
        double r3283 = r3278 - r3275;
        double r3284 = r3282 * r3283;
        double r3285 = sqrt(r3284);
        return r3285;
}