\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 r113142 = a;
double r113143 = b;
double r113144 = r113142 + r113143;
double r113145 = c;
double r113146 = r113144 + r113145;
double r113147 = 2.0;
double r113148 = r113146 / r113147;
double r113149 = r113148 - r113142;
double r113150 = r113148 * r113149;
double r113151 = r113148 - r113143;
double r113152 = r113150 * r113151;
double r113153 = r113148 - r113145;
double r113154 = r113152 * r113153;
double r113155 = sqrt(r113154);
return r113155;
}