double f(double a, double b, double c) {
double r7458848 = a;
double r7458849 = b;
double r7458850 = r7458848 + r7458849;
double r7458851 = c;
double r7458852 = r7458850 + r7458851;
double r7458853 = 2.0;
double r7458854 = r7458852 / r7458853;
double r7458855 = r7458854 - r7458848;
double r7458856 = r7458854 * r7458855;
double r7458857 = r7458854 - r7458849;
double r7458858 = r7458856 * r7458857;
double r7458859 = r7458854 - r7458851;
double r7458860 = r7458858 * r7458859;
double r7458861 = sqrt(r7458860);
return r7458861;
}