\sin \left({\left(\sqrt{\tan^{-1}_* \frac{b}{b}}\right)}^{\left(b - a\right)}\right)double f(double a, double b) {
double r7978 = b;
double r7979 = atan2(r7978, r7978);
double r7980 = sqrt(r7979);
double r7981 = a;
double r7982 = r7978 - r7981;
double r7983 = pow(r7980, r7982);
double r7984 = sin(r7983);
return r7984;
}