\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 r105533 = a;
double r105534 = b;
double r105535 = r105533 + r105534;
double r105536 = c;
double r105537 = r105535 + r105536;
double r105538 = 2.0;
double r105539 = r105537 / r105538;
double r105540 = r105539 - r105533;
double r105541 = r105539 * r105540;
double r105542 = r105539 - r105534;
double r105543 = r105541 * r105542;
double r105544 = r105539 - r105536;
double r105545 = r105543 * r105544;
double r105546 = sqrt(r105545);
return r105546;
}