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  1. #include <iostream>
  2.  
  3. #include <boost/multiprecision/cpp_dec_float.hpp>
  4.  
  5. using namespace boost::multiprecision;
  6.  
  7. int main() {
  8.     long double a = 0.1;
  9.     std::cout << std::setprecision(100) << a << std::endl;
  10.  
  11.     cpp_dec_float_100 b("0.1");
  12.     std::cout << std::setprecision(100) << b << std::endl;
  13.  
  14.     cpp_dec_float_100 counter;
  15.     do {
  16.         std::cout << "Loop " << std::endl;
  17.         counter += cpp_dec_float_100("0.1");
  18.     } while (counter != 1.0);
  19.  
  20.  
  21.     float amountOfProduct = 254.99f;
  22.     unsigned long int quantity = 100000000;
  23.     float amountOfCheckout = amountOfProduct*quantity;
  24.  
  25.     std::cout << std::setprecision(30) << amountOfCheckout << std::endl;
  26.  
  27.     cpp_dec_float_50 amountOfProduct2 = cpp_dec_float_50("254.99");
  28.     cpp_dec_float_50 quantity2 = cpp_dec_float_50("100000000");
  29.     cpp_dec_float_50 amountOfCheckout2 = cpp_dec_float_50(amountOfProduct2*quantity2);
  30.  
  31.     std::cout << std::setprecision(30) << amountOfCheckout2 << std::endl;
  32.  
  33.     return 0;
  34. }
Success #stdin #stdout 0s 15416KB
comments (?)
stdin 
Standard input is empty
stdout 
0.1000000000000000055511151231257827021181583404541015625
0.1
Loop 
Loop 
Loop 
Loop 
Loop 
Loop 
Loop 
Loop 
Loop 
Loop 
25499000832
25499000000
https://ideone.com/D9AxOb
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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