operator==,!=(std::bitset)

bool operator==( const bitset<N>& rhs ) const;	(1)
bool operator!=( const bitset<N>& rhs ) const;	(2)

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.

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 two bitsets to determine if they are identical:

Run this code

#include <iostream>
#include <bitset>

int main()
{
    std::bitset<4> b1(3); // [0,0,1,1]
    std::bitset<4> b2(b1);
    std::bitset<4> b3(4); // [0,1,0,0]

    std::cout << "b1 == b2: " << (b1 == b2) << '\n';
    std::cout << "b1 == b3: " << (b1 == b3) << '\n';
    std::cout << "b1!= b3: " << (b1 != b3) << '\n';
}

Output:

b1 == b2: 1
b1 == b3: 0
b1!= b3: 1

Language
Headers
Freestanding and hosted implementations
Named requirements
Language support library
Concepts library (C++20)
Diagnostics library
Utilities library
Strings library
Containers library
Algorithms library
Iterators library
Numerics library
Input/output library
Localizations library
Regular expressions library (C++11)
Atomic operations library (C++11)
Thread support library (C++11)
Filesystem library (C++17)
Technical Specifications

Member types
bitset::reference
Member functions
bitset::bitset
bitset::operator==bitset::operator!=
Element access
bitset::operator[]
bitset::test
bitset::allbitset::anybitset::none (C++11)
bitset::count
Capacity
bitset::size
Modifiers
bitset::operator&=bitset::operator\|=bitset::operator^=bitset::operator~
bitset::operator<<=bitset::operator>>=bitset::operator<<bitset::operator>>
bitset::set
bitset::reset
bitset::flip
Conversions
bitset::to_string
bitset::to_ulong
bitset::to_ullong (C++11)
Non-member functions
operator&operator\|operator^
operator<<operator>>
Helper classes
std::hash (C++11)