22 General utilities library [utilities]

22.11 Bit manipulation [bit]

22.11.5 Integral powers of 2 [bit.pow.two]

🔗
template<class T> constexpr bool has_single_bit(T x) noexcept;
1
#
Returns: true if x is an integral power of two; false otherwise.
🔗
template<class T> constexpr T bit_ceil(T x);
3
#
Returns: N.
7
#
Remarks: A function call expression that violates the precondition in the Preconditions: element is not a core constant expression ([expr.const]).
🔗
template<class T> constexpr T bit_floor(T x) noexcept;
9
#
Returns: If x == 0, 0; otherwise the maximal value y such that has_single_bit(y) is true and y <= x.
🔗
template<class T> constexpr int bit_width(T x) noexcept;
11
#
Returns: If x == 0, 0; otherwise one plus the base-2 logarithm of x, with any fractional part discarded.

Follow Lee on X/Twitter - Father, Husband, Serial builder creating AI, crypto, games & web tools. We are friends :) AI Will Come To Life!

Check out: eBank.nz (Art Generator) | Netwrck.com (AI Tools) | Text-Generator.io (AI API) | BitBank.nz (Crypto AI) | ReadingTime (Kids Reading) | RewordGame | BigMultiplayerChess | WebFiddle | How.nz | Helix AI Assistant