\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 r107032 = a;
double r107033 = b;
double r107034 = r107032 + r107033;
double r107035 = c;
double r107036 = r107034 + r107035;
double r107037 = 2.0;
double r107038 = r107036 / r107037;
double r107039 = r107038 - r107032;
double r107040 = r107038 * r107039;
double r107041 = r107038 - r107033;
double r107042 = r107040 * r107041;
double r107043 = r107038 - r107035;
double r107044 = r107042 * r107043;
double r107045 = sqrt(r107044);
return r107045;
}