---
title: 泊松分布函数
description: "KmlVslResult kml_vsl_rpois(VslPolicy *policy, N01type normal_method, int len, int *dst, double lambda)"
url: https://www.hikunpeng.com/document/detail/zh/kunpengaccel/math-lib/devg-kml/kunpengaccel_kml_0461.html
sourcePath: /source/zh/kunpengaccel/math-lib/devg-kml/kunpengaccel_kml_0461.html
indexId: 4c2ce4382f7d63fb4a6fdbb323a4c8484a42cff02582d23063279a9667ba256168
---
# 泊松分布函数

#### 接口定义

KmlVslResult kml_vsl_rpois(VslPolicy *policy, N01type normal_method, int len, int *dst, double lambda)


#### 概率密度函数


#### 参数

| 参数名 | 类型 | 描述 | 输入/输出 |
| --- | --- | --- | --- |
| len | int | 输入输出的长度。 | 输入 |
| lambda | double | lambda参数。 | 输入 |
| dst | int类型指针 | 指向结果的指针。 | 输出 |
| policy | VslPolicy类型指针 | 指向随机数生成器结构体指针。 | 输入 |
| normal\_method | N01type类型枚举体 | 生成正态分布的算法。 | 输入 |


#### 依赖

#include "kvsl.h"


#### 示例

```
#include <stdio.h>
#include <time.h>
#include <stdlib.h>
#include "kvsl.h"
int main()
{
    VslPolicy *policy;
    kml_vsl_init(&policy, LECUYER_CMRG, time(NULL));
    int len = 10;
    int *dst = (int *)malloc(sizeof(int) * len);
    int a = kml_vsl_rpois(policy, BOX_MULLER, len, dst, 10);
    for (int i = 0; i < len; i++) {
        printf("%d ", dst[i]);
    }
    printf("\n");
    kml_vsl_destroy(policy);
}
```