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  1. #include <iostream>
  2. #include <type_traits>
  3.  
  4. template<typename T>
  5. struct Test
  6. {
  7.     static_assert(std::is_scalar<T>::value, "Template parameter must be a scalar type");
  8.     using SignedT = typename std::conditional<std::is_floating_point<T>::value, std::common_type<T>, std::make_signed<T>>::type::type;
  9. };
  10.  
  11. int main()
  12. {
  13.     Test<int> t1;
  14.     Test<float> t2;
  15. }
  16.  
Success #stdin #stdout 0s 2848KB
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https://ideone.com/Vw7o82
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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