\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 r88232 = a;
double r88233 = b;
double r88234 = r88232 + r88233;
double r88235 = c;
double r88236 = r88234 + r88235;
double r88237 = 2.0;
double r88238 = r88236 / r88237;
double r88239 = r88238 - r88232;
double r88240 = r88238 * r88239;
double r88241 = r88238 - r88233;
double r88242 = r88240 * r88241;
double r88243 = r88238 - r88235;
double r88244 = r88242 * r88243;
double r88245 = sqrt(r88244);
return r88245;
}