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  1. #include <iostream>
  2. #include <cfenv>
  3.  
  4. int main()
  5. {
  6.     double one_third = 1.0/3.0;
  7.     std::cout.precision(4);
  8.  
  9.     std::fesetround(FE_DOWNWARD);
  10.     std::cout << one_third << std::endl;
  11.  
  12.     std::fesetround(FE_UPWARD);
  13.     std::cout << one_third << std::endl;
  14.  
  15.     return (0);
  16. }
Success #stdin #stdout 0s 3340KB
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stdin
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Standard input is empty
stdout
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0.3333
0.3334
https://ideone.com/4icSe5
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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