double f(double a, double b, double c) {
double r12283752 = a;
double r12283753 = b;
double r12283754 = r12283752 + r12283753;
double r12283755 = c;
double r12283756 = r12283754 + r12283755;
double r12283757 = 2.0;
double r12283758 = r12283756 / r12283757;
double r12283759 = r12283758 - r12283752;
double r12283760 = r12283758 * r12283759;
double r12283761 = r12283758 - r12283753;
double r12283762 = r12283760 * r12283761;
double r12283763 = r12283758 - r12283755;
double r12283764 = r12283762 * r12283763;
double r12283765 = sqrt(r12283764);
return r12283765;
}