\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 r74096 = a;
double r74097 = b;
double r74098 = r74096 + r74097;
double r74099 = c;
double r74100 = r74098 + r74099;
double r74101 = 2.0;
double r74102 = r74100 / r74101;
double r74103 = r74102 - r74096;
double r74104 = r74102 * r74103;
double r74105 = r74102 - r74097;
double r74106 = r74104 * r74105;
double r74107 = r74102 - r74099;
double r74108 = r74106 * r74107;
double r74109 = sqrt(r74108);
return r74109;
}