\sin \left({\left(\sqrt{\tan^{-1}_* \frac{b}{b}}\right)}^{\left(b - a\right)}\right)double f(double a, double b) {
double r8024 = b;
double r8025 = atan2(r8024, r8024);
double r8026 = sqrt(r8025);
double r8027 = a;
double r8028 = r8024 - r8027;
double r8029 = pow(r8026, r8028);
double r8030 = sin(r8029);
return r8030;
}