double f(double a, double b, double c) {
double r2736001 = a;
double r2736002 = b;
double r2736003 = r2736001 + r2736002;
double r2736004 = c;
double r2736005 = r2736003 + r2736004;
double r2736006 = 2.0;
double r2736007 = r2736005 / r2736006;
double r2736008 = r2736007 - r2736001;
double r2736009 = r2736007 * r2736008;
double r2736010 = r2736007 - r2736002;
double r2736011 = r2736009 * r2736010;
double r2736012 = r2736007 - r2736004;
double r2736013 = r2736011 * r2736012;
double r2736014 = sqrt(r2736013);
return r2736014;
}