std::UniformRandomBitGenerator (3) - Linux Manuals

std::UniformRandomBitGenerator: std::UniformRandomBitGenerator


std::UniformRandomBitGenerator - std::UniformRandomBitGenerator


Defined in header <random>
template <class G>
concept UniformRandomBitGenerator =
std::Invocable<G&> &&
std::UnsignedIntegral<std::invoke_result_t<G&>> && (since C++20)
requires {
G::min(); requires std::Same<decltype(G::min()), std::invoke_result_t<G&>>;
G::max(); requires std::Same<decltype(G::max()), std::invoke_result_t<G&>>;

The concept UniformRandomBitGenerator <G> specifies that G is the type of a uniform random bit generator, that is, objects of type G is a function object returning unsigned integer values such that each value in the range of possible results has (ideally) equal probability of being returned.
UniformRandomBitGenerator<G> is satisfied only if, given any object g of type G:

* G::min() and G::max() are constant expressions;
* G::min() < G::max()
* g() is in the range [G::min(), G::max()]
* g() has amortized constant complexity.