\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 r98799 = a;
double r98800 = b;
double r98801 = r98799 + r98800;
double r98802 = c;
double r98803 = r98801 + r98802;
double r98804 = 2.0;
double r98805 = r98803 / r98804;
double r98806 = r98805 - r98799;
double r98807 = r98805 * r98806;
double r98808 = r98805 - r98800;
double r98809 = r98807 * r98808;
double r98810 = r98805 - r98802;
double r98811 = r98809 * r98810;
double r98812 = sqrt(r98811);
return r98812;
}