13 KiB
[bitset.members]
22 General utilities library [utilities]
22.9 Bitsets [bitset]
22.9.2 Class template bitset [template.bitset]
22.9.2.3 Members [bitset.members]
constexpr bitset& operator&=(const bitset& rhs) noexcept;
Effects: Clears each bit in*this for which the corresponding bit in rhs is clear, and leaves all other bits unchanged.
Returns: *this.
constexpr bitset& operator|=(const bitset& rhs) noexcept;
Effects: Sets each bit in*this for which the corresponding bit in rhs is set, and leaves all other bits unchanged.
Returns: *this.
constexpr bitset& operator^=(const bitset& rhs) noexcept;
Effects: Toggles each bit in*this for which the corresponding bit in rhs is set, and leaves all other bits unchanged.
Returns: *this.
constexpr bitset& operator<<=(size_t pos) noexcept;
Effects: Replaces each bit at position I in*this with a value determined as follows:
If I < pos, the new value is zero;
If I >= pos, the new value is the previous value of the bit at position I - pos.
Returns: *this.
constexpr bitset& operator>>=(size_t pos) noexcept;
Effects: Replaces each bit at position I in*this with a value determined as follows:
If pos >= N - I, the new value is zero;
If pos < N - I, the new value is the previous value of the bit at position I + pos.
Returns: *this.
constexpr bitset operator<<(size_t pos) const noexcept;
Returns: bitset(*this) <<= pos.
constexpr bitset operator>>(size_t pos) const noexcept;
Returns: bitset(*this) >>= pos.
constexpr bitset& set() noexcept;
Effects: Sets all bits in*this.
Returns: *this.
constexpr bitset& set(size_t pos, bool val = true);
Effects: Stores a new value in the bit at position pos in*this.
If val is true, the stored value is one, otherwise it is zero.
Returns: *this.
Throws: out_of_range if pos does not correspond to a valid bit position.
constexpr bitset& reset() noexcept;
Effects: Resets all bits in*this.
Returns: *this.
constexpr bitset& reset(size_t pos);
Effects: Resets the bit at position pos in*this.
Returns: *this.
Throws: out_of_range if pos does not correspond to a valid bit position.
constexpr bitset operator~() const noexcept;
Effects: Constructs an object x of classbitset and initializes it with*this.
Returns: x.flip().
constexpr bitset& flip() noexcept;
Effects: Toggles all bits in*this.
Returns: *this.
constexpr bitset& flip(size_t pos);
Effects: Toggles the bit at position pos in*this.
Returns: *this.
Throws: out_of_range if pos does not correspond to a valid bit position.
constexpr bool operator[](size_t pos) const;
Hardened preconditions: pos < size() is true.
Returns: true if the bit at position pos in *this has the value one, otherwise false.
Throws: Nothing.
constexpr bitset::reference operator[](size_t pos);
Hardened preconditions: pos < size() is true.
Returns: An object of typebitset::reference such that(*this)[pos] == this->test(pos), and such that(*this)[pos] = val is equivalent tothis->set(pos, val).
Throws: Nothing.
Remarks: For the purpose of determining the presence of a data race ([intro.multithread]), any access or update through the resulting reference potentially accesses or modifies, respectively, the entire underlying bitset.
constexpr unsigned long to_ulong() const;
Returns: x.
Throws: overflow_error if the integral value x corresponding to the bits in *this cannot be represented as type unsigned long.
constexpr unsigned long long to_ullong() const;
Returns: x.
Throws: overflow_error if the integral value x corresponding to the bits in *this cannot be represented as type unsigned long long.
template<class charT = char, class traits = char_traits<charT>, class Allocator = allocator<charT>> constexpr basic_string<charT, traits, Allocator> to_string(charT zero = charT('0'), charT one = charT('1')) const;
Effects: Constructs a string object of the appropriate type and initializes it to a string of length N characters.
Each character is determined by the value of its corresponding bit position in*this.
Character position N - 1 corresponds to bit position zero.
Subsequent decreasing character positions correspond to increasing bit positions.
Bit value zero becomes the character zero, bit value one becomes the characterone.
Returns: The created object.
constexpr size_t count() const noexcept;
Returns: A count of the number of bits set in*this.
constexpr size_t size() const noexcept;
Returns: N.
constexpr bool operator==(const bitset& rhs) const noexcept;
Returns: true if the value of each bit in*this equals the value of the corresponding bit in rhs.
constexpr bool test(size_t pos) const;
Returns: true if the bit at position pos in*this has the value one.
Throws: out_of_range if pos does not correspond to a valid bit position.
constexpr bool all() const noexcept;
Returns: count() == size().
constexpr bool any() const noexcept;
Returns: count() != 0.
constexpr bool none() const noexcept;
Returns: count() == 0.