double f(double a, double b, double c) {
double r2350128 = a;
double r2350129 = b;
double r2350130 = r2350128 + r2350129;
double r2350131 = c;
double r2350132 = r2350130 + r2350131;
double r2350133 = 2.0;
double r2350134 = r2350132 / r2350133;
double r2350135 = r2350134 - r2350128;
double r2350136 = r2350134 * r2350135;
double r2350137 = r2350134 - r2350129;
double r2350138 = r2350136 * r2350137;
double r2350139 = r2350134 - r2350131;
double r2350140 = r2350138 * r2350139;
double r2350141 = sqrt(r2350140);
return r2350141;
}