\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 r116365 = a;
double r116366 = b;
double r116367 = r116365 + r116366;
double r116368 = c;
double r116369 = r116367 + r116368;
double r116370 = 2.0;
double r116371 = r116369 / r116370;
double r116372 = r116371 - r116365;
double r116373 = r116371 * r116372;
double r116374 = r116371 - r116366;
double r116375 = r116373 * r116374;
double r116376 = r116371 - r116368;
double r116377 = r116375 * r116376;
double r116378 = sqrt(r116377);
return r116378;
}