6. __builtin_popcountll, __builtin_clzll, __builtin_ctzll, __builtin_parityll

• Description:

  • These are similar to the above functions but work with long long (64-bit) integers.

• Example:

  #include <iostream>
  
  int main() {
      unsigned long long x = 123456789101112; // Example 64-bit number
      int count = __builtin_popcountll(x);
      int leading_zeros = __builtin_clzll(x);
      int trailing_zeros = __builtin_ctzll(x);
      int parity = __builtin_parityll(x);
  
      std::cout << "Number of 1 bits: " << count << std::endl;
      std::cout << "Number of leading zeros: " << leading_zeros << std::endl;
      std::cout << "Number of trailing zeros: " << trailing_zeros << std::endl;
      std::cout << "Parity: " << parity << std::endl;
  
      return 0;
  }