Random generator.

namespace boost {
  namespace unit_test {
    namespace data {
      monomorphic::generated_by< monomorphic::random_t<> > random();
      template<typename SampleType> 
        monomorphic::generated_by< monomorphic::random_t< SampleType > > 
        random(SampleType begin, SampleType end);
      template<typename Params> unspecified random(Params const & params);
      namespace monomorphic {
        template<typename SampleType = double, 
                 typename DistributionType = unspecified, 
                 typename EngineType = std::default_random_engine> 
          class random_t;
      }
    }
  }
}