我在查看cppreference.com上生成正态分布随机数的示例,并对代码进行了重构,得到以下结果:
#include <iostream>
#include <random>
struct MyNormalDistribution {
static double getRandomNumber(double mean,double std_dev){
return std::normal_distribution<>(mean,std_dev)(MyNormalDistribution::generator);
}
private:
static std::random_device rand;
static std::mt19937 generator;
};
std::random_device MyNormalDistribution::rand;
std::mt19937 MyNormalDistribution::generator = std::mt19937(MyNormalDistribution::rand());
int main(int argc, char *argv[]) {
for (int t=0;t<10;t++){
std::cout << MyNormalDistribution::getRandomNumber(0,10) << std::endl;
}
}
然而,每次运行此代码时,我都会得到相同的数字序列。是否有某些愚蠢的错误,或者cppreference上的示例没有包含适当的播种?
如何正确地为MyNormalDistribution
进行播种?