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  1. #include <iostream>
  2. #include <cfloat>
  3. #include <cmath>
  4.  
  5. using namespace std;
  6.  
  7. int main() {
  8.  
  9.     cout << LDBL_MANT_DIG << " mantisa bits " << LDBL_MANT_DIG*log10(2) << " digits " << LDBL_DIG << endl;
  10.     cout << DBL_MANT_DIG << " mantisa bits " << DBL_MANT_DIG*log10(2) << " digits " << DBL_DIG << endl;
  11. 	return 0;
  12. }
Success #stdin #stdout 0s 3344KB
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Standard input is empty
stdout
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64 mantisa bits 19.2659 digits 18
53 mantisa bits 15.9546 digits 15
https://ideone.com/eCeKVa
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
public

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