\sin \left({\left(\sqrt{\tan^{-1}_* \frac{b}{b}}\right)}^{\left(b - a\right)}\right)double f(double a, double b) {
double r8059 = b;
double r8060 = atan2(r8059, r8059);
double r8061 = sqrt(r8060);
double r8062 = a;
double r8063 = r8059 - r8062;
double r8064 = pow(r8061, r8063);
double r8065 = sin(r8064);
return r8065;
}