\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 r73288 = a;
double r73289 = b;
double r73290 = r73288 + r73289;
double r73291 = c;
double r73292 = r73290 + r73291;
double r73293 = 2.0;
double r73294 = r73292 / r73293;
double r73295 = r73294 - r73288;
double r73296 = r73294 * r73295;
double r73297 = r73294 - r73289;
double r73298 = r73296 * r73297;
double r73299 = r73294 - r73291;
double r73300 = r73298 * r73299;
double r73301 = sqrt(r73300);
return r73301;
}