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Of note, there is a 64 bit version of std::mt19937: std::mt19937_64 that returns 64 bits of randomness per call. auto rnd5 = std::mt19937_64(std::random_device{}()); // min: 4879020137534 mean: 1655417118684 max: 18446741225191893648

Sean
– Sean

2013-04-06 08:17:55 +00:00
Commented Apr 6, 2013 at 8:17
By the way, is it safe to re-use the same random number engine with many distributions and std::bind() or is it better to bind each distribution to a new engine instance? How's this: std::mt19937_64 random = std::mt19937_64(std::random_device{}()); auto randomCardinality = std::bind(std::uniform_int_distribution<int>(1, 4), random); auto randomValue = std::bind(std::uniform_real_distribution<double>(-1.0, 1.0), random);

Xharlie
– Xharlie

2015-09-15 10:27:03 +00:00
Commented Sep 15, 2015 at 10:27

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