\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 r61228 = a;
double r61229 = b;
double r61230 = r61228 + r61229;
double r61231 = c;
double r61232 = r61230 + r61231;
double r61233 = 2.0;
double r61234 = r61232 / r61233;
double r61235 = r61234 - r61228;
double r61236 = r61234 * r61235;
double r61237 = r61234 - r61229;
double r61238 = r61236 * r61237;
double r61239 = r61234 - r61231;
double r61240 = r61238 * r61239;
double r61241 = sqrt(r61240);
return r61241;
}