public member function
<random>

std::independent_bits_engine::discard

void discard (unsigned long long z);
Advance internal state
Advances the internal state by z notches, as if operator() was called z times, but without generating any numbers in the process.

The effects on the state sequence are the same as if the transition algorithm was applied z times on subsequent elements.

Parameters

z
Number of equivalent advances.

Return value

None

Example

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// independent_bits_engine::discard
#include <iostream>
#include <chrono>
#include <cstdint>
#include <random>

int main ()
{
  // obtain a seed from the system clock:
  unsigned seed = std::chrono::system_clock::now().time_since_epoch().count();

  std::independent_bits_engine<std::mt19937,64,std::uint_fast64_t> generator (seed);

  std::cout << "Random value: " << generator() << std::endl;

  generator.discard(1);  // discard one element

  std::cout << "Random value: " << generator() << std::endl;

  return 0;
}


Possible output:
Random value: 13760645581718272663
Random value: 451864462774584642

Complexity

Linear in z.

See also

independent_bits_engine::operator()
Generate random number (public member function)

C++