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 r5380 = a;
        double r5381 = b;
        double r5382 = r5380 + r5381;
        double r5383 = c;
        double r5384 = r5382 + r5383;
        double r5385 = 2.0;
        double r5386 = r5384 / r5385;
        double r5387 = r5386 - r5380;
        double r5388 = r5386 * r5387;
        double r5389 = r5386 - r5381;
        double r5390 = r5388 * r5389;
        double r5391 = r5386 - r5383;
        double r5392 = r5390 * r5391;
        double r5393 = sqrt(r5392);
        return r5393;
}