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

 

C++

Compiler support

Freestanding and hosted

Language

Standard library

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Metaprogramming library (C++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Concurrency support library (C++11)

Technical specifications

Symbols index

External libraries

 

Utilities library

Language support Type support (basic types, RTTI) Library feature-test macros (C++20) Dynamic memory management Program utilities Coroutine support (C++20) Variadic functions is_constant_evaluated (C++20) is_within_lifetime (C++26) initializer_list (C++11) source_location (C++20) Three-way comparison (C++20) three_way_comparablethree_way_comparable_with (C++20)(C++20) strong_ordering (C++20) weak_ordering (C++20) partial_ordering (C++20) common_comparison_category (C++20) compare_three_way_result (C++20) compare_three_way (C++20) strong_order (C++20) weak_order (C++20) partial_order (C++20) compare_strong_order_fallback (C++20) compare_weak_order_fallback (C++20) compare_partial_order_fallback (C++20)    is_eqis_neqis_ltis_lteqis_gtis_gteq (C++20)(C++20)(C++20)(C++20)(C++20)(C++20)

General utilities Date and time Function objects Formatting library (C++20) bitset hash (C++11) Relational operators (deprecated in C++20) rel_ops::operator!=rel_ops::operator> rel_ops::operator<=rel_ops::operator>= Integer comparison functions cmp_equalcmp_lesscmp_less_than (C++20)(C++20)(C++20)    cmp_not_equalcmp_greatercmp_greater_than (C++20)(C++20)(C++20) in_range (C++20) Swap and type operations swap ranges::swap (C++20) exchange (C++14) declval (C++11) to_underlying (C++23) forward (C++11) forward_like (C++23) move (C++11) move_if_noexcept (C++11) as_const (C++17) Common vocabulary types pair tuple (C++11) optional (C++17) any (C++17) variant (C++17) tuple_size (C++11) tuple_element (C++11) apply (C++17) make_from_tuple (C++17) expected (C++23) Elementary string conversions to_chars (C++17) from_chars (C++17) chars_format (C++17)

 

std::bitset

Member types

bitset::reference

Member functions

bitset::bitset

bitset::operator==bitset::operator!= (until C++20)

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)

 

	(1)
bitset operator<<( std::size_t pos ) const;			(until C++11)
bitset operator<<( std::size_t pos ) const noexcept;			(since C++11) (until C++23)
constexpr bitset operator<<( std::size_t pos ) const noexcept;			(since C++23)
		(2)
bitset& operator<<=( std::size_t pos );				(until C++11)
bitset& operator<<=( std::size_t pos ) noexcept;				(since C++11) (until C++23)
constexpr bitset& operator<<=( std::size_t pos ) noexcept;				(since C++23)
			(3)
bitset operator>>( std::size_t pos ) const;					(until C++11)
bitset operator>>( std::size_t pos ) const noexcept;					(since C++11) (until C++23)
constexpr bitset operator>>( std::size_t pos ) const noexcept;					(since C++23)
				(4)
bitset& operator>>=( std::size_t pos );						(until C++11)
bitset& operator>>=( std::size_t pos ) noexcept;						(since C++11) (until C++23)
constexpr bitset& operator>>=( std::size_t pos ) noexcept;						(since C++23)

Performs binary shift left (towards higher index positions) and binary shift right (towards lower index positions). Zeroes are shifted in, and bits that would go to an index out of range are dropped (ignored).

1-2) Performs binary shift left. The (2) version is destructive, i.e. performs the shift to the current object.

3-4) Performs binary shift right. The (4) version is destructive, i.e. performs the shift to the current object.

Parameters

pos

-

number of positions to shift the bits

Return value

1,3) new bitset object containing the shifted bits

2,4) *this

Example

Run this code

#include <iostream>
#include <bitset>
 
int main()
{
    std::bitset<8> b{0b01110010};
    std::cout << b << " (initial value)\n";
 
    for (; b.any(); b >>= 1) {
        for (; !b.test(0); b >>= 1) {
        }
        std::cout << b << '\n';
    }
 
    std::cout << b << " (final value)\n";
}

Output:

01110010 (initial value)
00111001
00000111
00000011
00000001
00000000 (final value)

See also

rotl (C++20)	computes the result of bitwise left-rotation (function template)
rotr (C++20)	computes the result of bitwise right-rotation (function template)
operator&=operator|=operator^=operator~	performs binary AND, OR, XOR and NOT (public member function)