\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 r95391 = a;
double r95392 = b;
double r95393 = r95391 + r95392;
double r95394 = c;
double r95395 = r95393 + r95394;
double r95396 = 2.0;
double r95397 = r95395 / r95396;
double r95398 = r95397 - r95391;
double r95399 = r95397 * r95398;
double r95400 = r95397 - r95392;
double r95401 = r95399 * r95400;
double r95402 = r95397 - r95394;
double r95403 = r95401 * r95402;
double r95404 = sqrt(r95403);
return r95404;
}