\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 r424623 = a;
double r424624 = b;
double r424625 = r424623 + r424624;
double r424626 = c;
double r424627 = r424625 + r424626;
double r424628 = 2.0;
double r424629 = r424627 / r424628;
double r424630 = r424629 - r424623;
double r424631 = r424629 * r424630;
double r424632 = r424629 - r424624;
double r424633 = r424631 * r424632;
double r424634 = r424629 - r424626;
double r424635 = r424633 * r424634;
double r424636 = sqrt(r424635);
return r424636;
}