\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 r124094 = a;
double r124095 = b;
double r124096 = r124094 + r124095;
double r124097 = c;
double r124098 = r124096 + r124097;
double r124099 = 2.0;
double r124100 = r124098 / r124099;
double r124101 = r124100 - r124094;
double r124102 = r124100 * r124101;
double r124103 = r124100 - r124095;
double r124104 = r124102 * r124103;
double r124105 = r124100 - r124097;
double r124106 = r124104 * r124105;
double r124107 = sqrt(r124106);
return r124107;
}