\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 r105930 = a;
double r105931 = b;
double r105932 = r105930 + r105931;
double r105933 = c;
double r105934 = r105932 + r105933;
double r105935 = 2.0;
double r105936 = r105934 / r105935;
double r105937 = r105936 - r105930;
double r105938 = r105936 * r105937;
double r105939 = r105936 - r105931;
double r105940 = r105938 * r105939;
double r105941 = r105936 - r105933;
double r105942 = r105940 * r105941;
double r105943 = sqrt(r105942);
return r105943;
}