\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 r88175 = a;
double r88176 = b;
double r88177 = r88175 + r88176;
double r88178 = c;
double r88179 = r88177 + r88178;
double r88180 = 2.0;
double r88181 = r88179 / r88180;
double r88182 = r88181 - r88175;
double r88183 = r88181 * r88182;
double r88184 = r88181 - r88176;
double r88185 = r88183 * r88184;
double r88186 = r88181 - r88178;
double r88187 = r88185 * r88186;
double r88188 = sqrt(r88187);
return r88188;
}