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std::bitset<N>::operator&=,|=,^=,~

From cppreference.com
< cpp‎ | utility‎ | bitset
 
 
Utilities library
General utilities
Relational operators (deprecated in C++20)
Integer comparison functions
(C++20)(C++20)(C++20)
(C++20)
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(C++14)
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(C++11)
(C++17)
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(C++11)
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Elementary string conversions
(C++17)
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Stacktrace
 
 
(1)
bitset& operator&=( const bitset& other );
(until C++11)
bitset& operator&=( const bitset& other ) noexcept;
(since C++11)
(2)
bitset& operator|=( const bitset& other );
(until C++11)
bitset& operator|=( const bitset& other ) noexcept;
(since C++11)
(3)
bitset& operator^=( const bitset& other );
(until C++11)
bitset& operator^=( const bitset& other ) noexcept;
(since C++11)
(4)
bitset operator~() const;
(until C++11)
bitset operator~() const noexcept;
(since C++11)

Performs binary AND, OR, XOR and NOT.

1) Sets the bits to the result of binary AND on corresponding pairs of bits of *this and other.
2) Sets the bits to the result of binary OR on corresponding pairs of bits of *this and other.
3) Sets the bits to the result of binary XOR on corresponding pairs of bits of *this and other.
4) Returns a temporary copy of *this with all bits flipped (binary NOT).

Note that &=, |=, and ^= are only defined for bitsets of the same size N.

Contents

[edit] Parameters

other - another bitset.

[edit] Return value

1-3) *this.
4) std::bitset<N>(*this).flip().

[edit] Example

#include <iostream>
#include <string>
#include <bitset>
 
int main()
{
    const std::string pattern_str{"1001"};
    std::bitset<16> pattern{pattern_str}, dest;
 
    for (std::size_t i = dest.size()/pattern_str.size(); i != 0; --i) {
        dest <<= pattern_str.size();
        dest |= pattern;
        std::cout << dest << " (i = " << i << ")\n";
    }
 
    std::cout << ~dest << " (~dest)\n";
}

Output:

0000000000001001 (i = 4)
0000000010011001 (i = 3)
0000100110011001 (i = 2)
1001100110011001 (i = 1)
0110011001100110 (~dest)

[edit] See also

performs binary shift left and shift right
(public member function) [edit]