In file included from /opt/compiler-explorer/cuda/12.6.1//include/cuda/std/cmath:25:
/opt/compiler-explorer/cuda/12.6.1//include/cuda/std/detail/libcxx/include/cmath:835:10: error: call to 'logb' is ambiguous
  835 |   return ::logb(__x);
      |          ^~~~~~
/opt/compiler-explorer/cuda/12.6.1//include/cuda/std/detail/libcxx/include/complex:639:30: note: in instantiation of function template specialization 'cuda::std::__constexpr_logb<__half>' requested here
  639 |   _Tp __logbw  = _CUDA_VSTD::__constexpr_logb(
      |                              ^
/opt/compiler-explorer/cuda/12.6.1//include/cuda/std/detail/libcxx/include/complex:436:17: note: in instantiation of function template specialization 'cuda::std::operator/<__half>' requested here
  436 |   __lhs = __lhs / complex<_Tp>(__rhs.real(), __rhs.imag());
      |                 ^
/opt/compiler-explorer/cuda/12.6.1//include/cuda/std/detail/libcxx/include/complex:746:7: note: in instantiation of function template specialization 'cuda::std::operator/=<__half, __half>' requested here
  746 |   __t /= __y;
      |       ^
<source>:19:3: note: in instantiation of function template specialization 'test<__half>' requested here
   19 |   test<__half>();
      |   ^
/opt/compiler-explorer/clang-trunk-20241107/lib/clang/20/include/cuda_wrappers/cmath:35:37: note: candidate function
   35 | __attribute__((device)) long double logb(long double);
      |                                     ^
/opt/compiler-explorer/cuda/12.6.1//include/crt/math_functions.hpp:587:31: note: candidate function
  587 | __MATH_FUNCTIONS_DECL__ float logb(const float a)
      |                               ^
/opt/compiler-explorer/clang-trunk-20241107/lib/clang/20/include/__clang_cuda_math.h:184:19: note: candidate function
  184 | __DEVICE__ double logb(double __a) { return __nv_logb(__a); }
      |                   ^