\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 r136189 = a;
double r136190 = b;
double r136191 = r136189 + r136190;
double r136192 = c;
double r136193 = r136191 + r136192;
double r136194 = 2.0;
double r136195 = r136193 / r136194;
double r136196 = r136195 - r136189;
double r136197 = r136195 * r136196;
double r136198 = r136195 - r136190;
double r136199 = r136197 * r136198;
double r136200 = r136195 - r136192;
double r136201 = r136199 * r136200;
double r136202 = sqrt(r136201);
return r136202;
}