\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 r8214 = a;
double r8215 = b;
double r8216 = r8214 + r8215;
double r8217 = c;
double r8218 = r8216 + r8217;
double r8219 = 2.0;
double r8220 = r8218 / r8219;
double r8221 = r8220 - r8214;
double r8222 = r8220 * r8221;
double r8223 = r8220 - r8215;
double r8224 = r8222 * r8223;
double r8225 = r8220 - r8217;
double r8226 = r8224 * r8225;
double r8227 = sqrt(r8226);
return r8227;
}