\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 r108616 = a;
double r108617 = b;
double r108618 = r108616 + r108617;
double r108619 = c;
double r108620 = r108618 + r108619;
double r108621 = 2.0;
double r108622 = r108620 / r108621;
double r108623 = r108622 - r108616;
double r108624 = r108622 * r108623;
double r108625 = r108622 - r108617;
double r108626 = r108624 * r108625;
double r108627 = r108622 - r108619;
double r108628 = r108626 * r108627;
double r108629 = sqrt(r108628);
return r108629;
}