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  1. #include <array>
  2. #include <cmath>
  3. #include <iostream>
  4. #include <utility>
  5.  
  6. double genEntry(std::uint32_t x) { 
  7.     return x == 0 ? 0 : std::log(x) / std::log(5);
  8. }
  9.  
  10. template <typename F, std::size_t ... Is>
  11. auto
  12. make_array(F f, std::index_sequence<Is...>)
  13. -> std::array<std::decay_t<decltype(f(0u))>, sizeof...(Is)>
  14. {
  15. 	return {{f(Is)...}};
  16. }
  17.  
  18.  
  19. int main() {
  20. 	const auto a = make_array(genEntry, std::make_index_sequence<16>());
  21.  
  22. 	for (auto e : a) {
  23. 		std::cout << e << std::endl;
  24. 	}
  25. }
  26.  
Success #stdin #stdout 0s 3096KB
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stdin
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Standard input is empty
stdout
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0
0
0.430677
0.682606
0.861353
1
1.11328
1.20906
1.29203
1.36521
1.43068
1.4899
1.54396
1.59369
1.63974
1.68261
https://ideone.com/XiviYh
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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