\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 r60281 = a;
double r60282 = b;
double r60283 = r60281 + r60282;
double r60284 = c;
double r60285 = r60283 + r60284;
double r60286 = 2.0;
double r60287 = r60285 / r60286;
double r60288 = r60287 - r60281;
double r60289 = r60287 * r60288;
double r60290 = r60287 - r60282;
double r60291 = r60289 * r60290;
double r60292 = r60287 - r60284;
double r60293 = r60291 * r60292;
double r60294 = sqrt(r60293);
return r60294;
}