\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 r105097 = a;
double r105098 = b;
double r105099 = r105097 + r105098;
double r105100 = c;
double r105101 = r105099 + r105100;
double r105102 = 2.0;
double r105103 = r105101 / r105102;
double r105104 = r105103 - r105097;
double r105105 = r105103 * r105104;
double r105106 = r105103 - r105098;
double r105107 = r105105 * r105106;
double r105108 = r105103 - r105100;
double r105109 = r105107 * r105108;
double r105110 = sqrt(r105109);
return r105110;
}