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std::mersenne_twister_engine::seed(3) | C++ Standard Libary | std::mersenne_twister_engine::seed(3) |
NAME¶
std::mersenne_twister_engine::seed - std::mersenne_twister_engine::seed
Synopsis¶
void seed( result_type value = default_seed ); (1)
(since C++11)
template< class SeedSeq > (2) (since C++11)
void seed( SeedSeq& seq );
Sets the state of the random-number engine.
1) Right after the state is set, *this == std::mersenne_twister_engine(value)
is
true.
2) Right after the state is set, *this == std::mersenne_twister_engine(seq)
is true.
Parameters¶
value - seed value to use to set the state
seq - seed sequence to use to set the state
Exceptions¶
Throws nothing.
Complexity¶
1) Same as std::mersenne_twister_engine(value).
2) Same as std::mersenne_twister_engine(seq).
Example¶
// Run this code
#include <iostream>
#include <random>
int main()
{
std::mt19937 gen;
// Seed the engine with an unsigned int
gen.seed(1);
std::cout << "after seed by 1: " << gen() <<
'\n';
// Seed the engine with two unsigned ints
std::seed_seq sseq{1, 2};
gen.seed(sseq);
std::cout << "after seed by {1,2}: " << gen() <<
'\n';
}
Possible output:¶
after seed by 1: 1791095845
after seed by {1,2}: 3127717181
2024.06.10 | http://cppreference.com |