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  1. template<unsigned long long number, unsigned long long base>
  2. struct ct_log {
  3.     enum {value=ct_log<number/base, base>::value+1};
  4. };
  5. template<unsigned long long base>
  6. struct ct_log<0, base> {
  7.     enum {value=0};
  8. };
  9.  
  10. #include <iostream>
  11. int main() {
  12.    std::cout << ct_log<100000, 10>::value << '\n';
  13.    std::cout << ct_log<99999, 10>::value << '\n';
  14. }
  15.  
Success #stdin #stdout 0.01s 2680KB
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https://ideone.com/KcHYC
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
secret

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