xref: /aosp_15_r20/external/clang/test/SemaTemplate/fibonacci.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315)
1*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only %s
2*67e74705SXin Li 
3*67e74705SXin Li template<unsigned I>
4*67e74705SXin Li struct FibonacciEval;
5*67e74705SXin Li 
6*67e74705SXin Li template<unsigned I>
7*67e74705SXin Li struct Fibonacci {
8*67e74705SXin Li   enum { value = FibonacciEval<I-1>::value + FibonacciEval<I-2>::value };
9*67e74705SXin Li };
10*67e74705SXin Li 
11*67e74705SXin Li template<unsigned I>
12*67e74705SXin Li struct FibonacciEval {
13*67e74705SXin Li   enum { value = Fibonacci<I>::value };
14*67e74705SXin Li };
15*67e74705SXin Li 
16*67e74705SXin Li template<> struct Fibonacci<0> {
17*67e74705SXin Li   enum { value = 0 };
18*67e74705SXin Li };
19*67e74705SXin Li 
20*67e74705SXin Li template<> struct Fibonacci<1> {
21*67e74705SXin Li   enum { value = 1 };
22*67e74705SXin Li };
23*67e74705SXin Li 
24*67e74705SXin Li int array5[Fibonacci<5>::value == 5? 1 : -1];
25*67e74705SXin Li int array10[Fibonacci<10>::value == 55? 1 : -1];
26*67e74705SXin Li 
27*67e74705SXin Li template<unsigned I>
28*67e74705SXin Li struct FibonacciEval2;
29*67e74705SXin Li 
30*67e74705SXin Li template<unsigned I>
31*67e74705SXin Li struct Fibonacci2 {
32*67e74705SXin Li   static const unsigned value
33*67e74705SXin Li     = FibonacciEval2<I-1>::value + FibonacciEval2<I-2>::value;
34*67e74705SXin Li };
35*67e74705SXin Li 
36*67e74705SXin Li template<unsigned I>
37*67e74705SXin Li struct FibonacciEval2 {
38*67e74705SXin Li   static const unsigned value = Fibonacci2<I>::value;
39*67e74705SXin Li };
40*67e74705SXin Li 
41*67e74705SXin Li template<> struct Fibonacci2<0> {
42*67e74705SXin Li   static const unsigned value = 0;
43*67e74705SXin Li };
44*67e74705SXin Li 
45*67e74705SXin Li template<> struct Fibonacci2<1> {
46*67e74705SXin Li   static const unsigned value = 1;
47*67e74705SXin Li };
48*67e74705SXin Li 
49*67e74705SXin Li int array5_2[Fibonacci2<5>::value == 5? 1 : -1];
50*67e74705SXin Li int array10_2[Fibonacci2<10>::value == 55? 1 : -1];
51*67e74705SXin Li 
52*67e74705SXin Li template<unsigned I>
53*67e74705SXin Li struct Fibonacci3 {
54*67e74705SXin Li   static const unsigned value = Fibonacci3<I-1>::value + Fibonacci3<I-2>::value;
55*67e74705SXin Li };
56*67e74705SXin Li 
57*67e74705SXin Li template<> struct Fibonacci3<0> {
58*67e74705SXin Li   static const unsigned value = 0;
59*67e74705SXin Li };
60*67e74705SXin Li 
61*67e74705SXin Li template<> struct Fibonacci3<1> {
62*67e74705SXin Li   static const unsigned value = 1;
63*67e74705SXin Li };
64*67e74705SXin Li 
65*67e74705SXin Li int array5_3[Fibonacci3<5>::value == 5? 1 : -1];
66*67e74705SXin Li int array10_3[Fibonacci3<10>::value == 55? 1 : -1];
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