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