\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 r118040 = a;
double r118041 = b;
double r118042 = r118040 + r118041;
double r118043 = c;
double r118044 = r118042 + r118043;
double r118045 = 2.0;
double r118046 = r118044 / r118045;
double r118047 = r118046 - r118040;
double r118048 = r118046 * r118047;
double r118049 = r118046 - r118041;
double r118050 = r118048 * r118049;
double r118051 = r118046 - r118043;
double r118052 = r118050 * r118051;
double r118053 = sqrt(r118052);
return r118053;
}