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  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. double quantize(double x, int bits) {
  5.     int scaled = std::round(x * (1 << bits));
  6.     return scaled / static_cast<double>(1 << bits);
  7. }
  8.  
  9. int main() {
  10.     double a = 1.0 / 10.0;
  11.     double b = 1.0 / 5.0;
  12.     double c = 2.0 / 7.0;
  13.  
  14.     std::cout << "a) 1/10, 9 bitow -> " << quantize(a, 9) << std::endl;
  15.     std::cout << "b) 1/5,  8 bitow -> " << quantize(b, 8) << std::endl;
  16.     std::cout << "c) 2/7,  7 bitow -> " << quantize(c, 7) << std::endl;
  17.  
  18.     return 0;
  19. }
  20.  
Success #stdin #stdout 0.01s 5320KB
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stdin
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Standard input is empty
stdout
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a) 1/10, 9 bitow -> 0.0996094
b) 1/5,  8 bitow -> 0.199219
c) 2/7,  7 bitow -> 0.289062
https://ideone.com/OvHLQc
language:
C++ (gcc 8.3)
created:
7 days ago
visibility:
public

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