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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. typedef union {
  5.   int i32;
  6.   float d32;
  7. } dbl_32;
  8. double machine_eps (float value)
  9. {
  10.     dbl_32 s;
  11.     s.d32 = value;
  12.     s.i32++;
  13.     return s.d32 - value;
  14. }
  15.  
  16. int
  17. main(int argc, char *argv[])
  18. { 
  19. float a, b, f;
  20. a=123456789;
  21. b=123456788; 
  22. cout << machine_eps(a) << "; " << machine_eps(b);
  23. return 0;
  24.  
  25. }
Success #stdin #stdout 0s 3296KB
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Standard input is empty
stdout
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8; 8
https://ideone.com/g8J4bK
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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