\sin \left({\left(\sqrt{\tan^{-1}_* \frac{b}{b}}\right)}^{\left(b - a\right)}\right)double f(double a, double b) {
double r8027 = b;
double r8028 = atan2(r8027, r8027);
double r8029 = sqrt(r8028);
double r8030 = a;
double r8031 = r8027 - r8030;
double r8032 = pow(r8029, r8031);
double r8033 = sin(r8032);
return r8033;
}