std::seed_seq::size

 

C++

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Seed Sequences

seed_seq (C++11)

C library

rand

srand

RAND_MAX

 

std::seed_seq

Member functions

seed_seq::seed_seq (C++11)

seed_seq::generate (C++11)

seed_seq::size (C++11)

seed_seq::param (C++11)

 

std::size_t size() const noexcept;		(since C++11)

Returns the size of the stored initial seed sequence.

Parameters

(none)

Return value

The size of the private container that was populated at construction time.

Complexity

Constant time.

Example

Run this code

#include <random>
#include <iostream>
int main()
{
    std::seed_seq s1 = {-1, 0, 1};
    std::cout << s1.size() << '\n';
}

Output:

3

Defect report

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR	Applied to	Behavior as published	Correct behavior
LWG 2440	C++11	seed_seq::size was not required to be noexcept	required