\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 r106544 = a;
double r106545 = b;
double r106546 = r106544 + r106545;
double r106547 = c;
double r106548 = r106546 + r106547;
double r106549 = 2.0;
double r106550 = r106548 / r106549;
double r106551 = r106550 - r106544;
double r106552 = r106550 * r106551;
double r106553 = r106550 - r106545;
double r106554 = r106552 * r106553;
double r106555 = r106550 - r106547;
double r106556 = r106554 * r106555;
double r106557 = sqrt(r106556);
return r106557;
}