std::bitset<N>:: operator==, std::bitset<N>:: operator!=

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C++
Utilities library
General utilities
Relational operators (deprecated in C++20)
std::bitset
bool operator == ( const bitset & rhs ) const ;
(1) (noexcept since C++11)
(constexpr since C++23)
bool operator ! = ( const bitset & rhs ) const ;
(2) (noexcept since C++11)
(until C++20)
1) Returns true if all of the bits in * this and rhs are equal.
2) Returns true if any of the bits in * this and rhs are not equal.

The != operator is synthesized from operator== .

(since C++20)

Parameters

rhs - bitset to compare

Return value

1) true if the value of each bit in * this equals the value of the corresponding bit in rhs , otherwise false .
2) true if ! ( * this == rhs ) , otherwise false .

Example

Compare given bitsets to determine if they are identical:

Run this code 
#include <bitset>
#include <iostream>
 
int main()
{
    std::bitset<4> b1(0b0011);
    std::bitset<4> b2(b1);
    std::bitset<4> b3(0b0100);
 
    std::cout << std::boolalpha;
    std::cout << "b1 == b2: " << (b1 == b2) << '\n';
    std::cout << "b1 == b3: " << (b1 == b3) << '\n';
    std::cout << "b1 != b3: " << (b1 != b3) << '\n';
 
//  b1 == std::bitset<3>{}; // compile-time error: incompatible types
}

Output: 

b1 == b2: true
b1 == b3: false
b1 != b3: true
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