__k_sin
return (__k_sin(pi * x, 0.0));
y = __k_sin(pi * y, 0.0);
y = __k_sin(pi * (1.0 - y), 0.0);
y = __k_sin(pi * (y - 2.0), 0.0);
return (-__k_sin(y[0], y[1]));
return (__k_sin(y[0], y[1]));
extern double __k_sin __P((double, double));
return (__k_sin(y[0], y[1]));
return (-__k_sin(y[0], y[1]));