\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 r72276 = a;
double r72277 = b;
double r72278 = r72276 + r72277;
double r72279 = c;
double r72280 = r72278 + r72279;
double r72281 = 2.0;
double r72282 = r72280 / r72281;
double r72283 = r72282 - r72276;
double r72284 = r72282 * r72283;
double r72285 = r72282 - r72277;
double r72286 = r72284 * r72285;
double r72287 = r72282 - r72279;
double r72288 = r72286 * r72287;
double r72289 = sqrt(r72288);
return r72289;
}