1// { dg-do assemble } 2 3const double M_PI=3.14159265358979323846; 4 5template<int N,int I,int J,int K> 6inline double SineSeries() 7{ 8 const double x=I*2*M_PI/N; 9 const bool go=K+1!=J; 10 return 1.0-x*x/(2*K+2)/(2*K+3)*SineSeries<N*go,I*go,J*go,(K+1)*go>(); 11} 12 13template<> 14inline double SineSeries<0,0,0,0>() 15{ 16 return 1.0; 17} 18 19template<int N,int I> 20inline double Sine() 21{ 22 const double x=(I*2*M_PI/N); 23 return x * SineSeries<N,I,10,0>(); 24} 25 26int main() 27{ 28 double f=Sine<32,5>(); 29 return 0; 30} 31 32