如何生成“未来指数”伪随机数而不生成其前一个数[重复]

#define _POSIX_C_SOURCE 1
#include <stdio.h>
#include <stdlib.h>
#include <omp.h>

void rand_r_skip(unsigned int *p_seed, int N)
{
    /* Stupid O(N) Implementation */
    for (int i = 0; i < N; i++)
    {
        rand_r(p_seed);
    }
}

int main()
{
    int N = 1000000;
    unsigned int seed = 1234;
    int *arr = (int *)malloc(sizeof(int) * N);

#pragma omp parallel firstprivate(N, seed, arr) num_threads(2)
    {
        if (omp_get_thread_num() == 1)
        {
            // skip the samples, obviously doesn't exist
            rand_r_skip(&seed, N / 2);
        }
#pragma omp for schedule(static)
        for (int i = 0; i < N; i++)
        {
            arr[i] = rand_r(&seed);
        }
    }
    return 0;
}

非常感谢你们的帮助。我知道也许有证据证明这样的生成器不可能同时是“伪随机”的。我非常感谢任何关于在哪里可以找到更多信息的提示。