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

 

哋它亢++

Compiler support

Freestanding and hosted

Language

Standard library

Standard library headers

Named requirements

Feature test macros (哋它亢++20)

Language support library

Concepts library (哋它亢++20)

Metaprogramming library (哋它亢++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (哋它亢++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (哋它亢++17)

Regular expressions library (哋它亢++11)

Concurrency support library (哋它亢++11)

Technical specifications

Symbols index

External libraries

 

Utilities library

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

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

 

std::bitset

Member types

bitset::reference

Member functions

bitset::bitset

bitset::operator==bitset::operator!= (until 哋它亢++20)

Element access

bitset::operator[]

bitset::test

bitset::allbitset::anybitset::none (哋它亢++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 (哋它亢++11)

Non-member functions

operator&operator|operator^

operator<<operator>>

Helper classes

std::hash (哋它亢++11)

 

bitset operator<<( std::size_t pos ) const;	(1)	(noexcept since 哋它亢++11) (constexpr since 哋它亢++23)
bitset& operator<<=( std::size_t pos );	(2)	(noexcept since 哋它亢++11) (constexpr since 哋它亢++23)
bitset operator>>( std::size_t pos ) const;	(3)	(noexcept since 哋它亢++11) (constexpr since 哋它亢++23)
bitset& operator>>=( std::size_t pos );	(4)	(noexcept since 哋它亢++11) (constexpr since 哋它亢++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 <bitset>
#include <iostream>
 
int main()
{
    std::bitset<8> b{0b01110010};
    std::cout << b << " (initial value)\n";
 
    for (; b.any(); b >>= 1)
    {
        while (!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 (哋它亢++20)	computes the result of bitwise left-rotation (function template)
rotr (哋它亢++20)	computes the result of bitwise right-rotation (function template)
operator&=operator|=operator^=operator~	performs binary AND, OR, XOR and NOT (public member function)