std::experimental::ranges::UniformRandomNumberGenerator
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URNG concept
UniformRandomNumberGenerator
Defined in header
<experimental/ranges/random>
template< class G >
(ranges TS)
concept bool UniformRandomNumberGenerator =
Invocable<G&> &&
UnsignedIntegral<std::result_of_t <G&()>> &&
requires {
{ G::min() } -> Same<std::result_of_t <G&()>>&&;
{ G::max() } -> Same<std::result_of_t <G&()>>&&;
The concept UniformRandomNumberGenerator<G> specifies that G is the type of a uniform random number 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.
UniformRandomNumberGenerator<G> is satisfied only if, given any object g of type G:
-
G::min()andG::max()are prvalue constant expressions; -
G::min() < G::max() -
g()is in the range[G::min(), G::max()] -
g()has amortized constant complexity.