\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 r78053 = a;
double r78054 = b;
double r78055 = r78053 + r78054;
double r78056 = c;
double r78057 = r78055 + r78056;
double r78058 = 2.0;
double r78059 = r78057 / r78058;
double r78060 = r78059 - r78053;
double r78061 = r78059 * r78060;
double r78062 = r78059 - r78054;
double r78063 = r78061 * r78062;
double r78064 = r78059 - r78056;
double r78065 = r78063 * r78064;
double r78066 = sqrt(r78065);
return r78066;
}