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  1. #include <iostream>
  2. #include <complex>
  3. #include <type_traits>
  4.  
  5. namespace std {
  6.  
  7. template< class T >
  8. struct is_floating_point<std::complex<T>> : std::integral_constant<
  9.                                bool,
  10.                                std::is_same<float, typename std::remove_cv<T>::type>::value  ||
  11.                                std::is_same<double, typename std::remove_cv<T>::type>::value  ||
  12.                                std::is_same<long double, typename std::remove_cv<T>::type>::value
  13.                            > {};
  14.  
  15. }
  16.  
  17. int main() {
  18.   std::cout << std::boolalpha << std::is_floating_point<double>::value << std::endl;
  19.   std::cout << std::boolalpha << std::is_floating_point<std::complex<double>>::value << std::endl;
  20.   std::cout << std::boolalpha << std::is_floating_point<std::complex<long double>>::value << std::endl;
  21. }
Success #stdin #stdout 0s 3340KB
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stdin
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Standard input is empty
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true
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true
https://ideone.com/uNdZ2R
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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