std::uniform_random_bit_generator(3cxx) std::uniform_random_bit_generator(3cxx)

std::uniform_random_bit_generator - Requirements for a uniform random bit generator.

#include <random>

template<typename _Gen>
concept std::uniform_random_bit_generator =  invocable<_Gen&> && unsigned_integral<invoke_result_t<_Gen&>>
      && requires
      {
        { _Gen::min() } -> same_as<invoke_result_t<_Gen&>>;
        { _Gen::max() } -> same_as<invoke_result_t<_Gen&>>;
        requires bool_constant<(_Gen::min() < _Gen::max())>::value;
      }

Requirements for a uniform random bit generator.

Since

C++20

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libstdc++