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std::seed_seq

STD：种子[医]SEQ

Defined in header ​​
class seed_seq;​(since C++11)

std::seed_seq使用整数值数据序列，并生成所请求的无符号整数值数。i，0≤i<232

，基于消耗的数据。所产生的值分布在整个32位范围内，即使消耗的值接近。

它提供了一种方法来为大量的随机数引擎播种种子，或者在给定一个小种子或一个分布不佳的初始种子序列的情况下，为需要大量熵的生成器播种。

std::seed_seq满足…的要求SeedSequence...

成员类型

Member typeDefinition
result_typestd::uint_least32_t

成员函数

(constructor)constructs and seeds the std::seed_seq object (public member function)
operator= (deleted)not copy-assignable (public member function)
generatecalculates the bias-eliminated, evenly distributed 32-bit values (public member function)
sizeobtains the number of 32-bit values stored in std::seed_seq (public member function)
paramobtains the 32-bit values stored in std::seed_seq (public member function)

例

二次

#include <random>
#include <cstdint>
#include <iostream>
 
int main()
{
    std::seed_seq seq{1,2,3,4,5};
    std::vector<std::uint32_t> seeds(10
    seq.generate(seeds.begin(), seeds.end()
    for (std::uint32_t n : seeds) {
        std::cout << n << '\n';
    }
}

二次

产出：

二次

4204997637
4246533866
1856049002
1129615051
690460811
1075771511
46783058
3904109078
1534123438
1495905678

二次

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