__cos
hidden double __cos(double,double);
return __cos(x, 0);
case 0: return __cos(y[0], y[1]);
case 2: return -__cos(y[0], y[1]);
case 1: return __cos(x, 0.0);
case 3: return -__cos(x, 0.0);
case 1: return __cos(y[0], y[1]);
return -__cos(y[0], y[1]);
*cos = __cos(x, 0.0);
c = __cos(y[0], y[1]);
return __cos(x, 0);
return -__cos(x, 0);