---
title: RandUniform
description: "产生给定均值、标准差的均匀分布随机序列。"
url: https://www.hikunpeng.com/document/detail/zh/kunpengboostkithistory/240RC2/accel/kunpengaccel_hmpp_06_0170.html
sourcePath: /source/zh/kunpengboostkithistory/240RC2/accel/kunpengaccel_hmpp_06_0170.html
indexId: 35919a58e51d728712138284d1b039f956d255b16925d631e3920c6e3718116577
---
# RandUniform

产生给定均值、标准差的均匀分布随机序列。

函数接口声明如下：

- 初始化操作：
  HmppResult HMPPS_RandUniformInit_8u(HmppsRandUniformPolicy_8u** policy, uint8_t low, uint8_t high, uint32_t seed);

  HmppResult HMPPS_RandUniformInit_16s(HmppsRandUniformPolicy_16s** policy, int16_t low, int16_t high, uint32_t seed);

  HmppResult HMPPS_RandUniformInit_32f(HmppsRandUniformPolicy_32f** policy, float low, float high, uint32_t seed);

  HmppResult HMPPS_RandUniformInit_64f(HmppsRandUniformPolicy_64f** policy, double low, double high, uint32_t seed);

- 主函数操作：
  HmppResult HMPPS_RandUniform_8u(uint8_t* dst, int32_t len, HmppsRandUniformPolicy_8u* policy);

  HmppResult HMPPS_RandUniform_16s(int16_t* dst, int32_t len, HmppsRandUniformPolicy_16s* policy);

  HmppResult HMPPS_RandUniform_32f(float* dst, int32_t len, HmppsRandUniformPolicy_32f* policy);

  HmppResult HMPPS_RandUniform_64f(double* dst, int32_t len, HmppsRandUniformPolicy_64f* policy);

- 释放内存操作：
  HmppResult HMPPS_RandUniformRelease_8u(HmppsRandGaussPolicy_8u* policy);

  HmppResult HMPPS_ RandUniformRelease_16s(HmppsRandGaussPolicy_16s* policy);

  HmppResult HMPPS_ RandUniformRelease_32f(HmppsRandGaussPolicy_32f* policy);

  HmppResult HMPPS_ RandUniformRelease_64f(HmppsRandGaussPolicy_64f* policy);


#### 参数

| 参数名 | 描述 | 取值范围 | 输入/输出 |
| --- | --- | --- | --- |
| dst | 指向目的向量的指针。 | 非空 | 输出 |
| len | 向量长度。 | (0,INT\_MAX] | 输入 |
| low | 最小值 | 视类型而定 | 输入 |
| high | 最大值 | 视类型而定 | 输入 |
| seed | 随机数种子。 | 视类型而定 | 输入 |
| policy | 产生随机序列参数结构体。 | 非空 | 输入/输出 |


#### 返回值

- 成功：返回HMPP_STS_NO_ERR。
- 失败：返回错误码。


#### 错误码

| 错误码 | 描述 |
| --- | --- |
| HMPP\_STS\_NULL\_PTR\_ERR | dst这个入参中存在空指针。 |
| HMPP\_STS\_SIZE\_ERR | len小于或等于0。 |
| HMPP\_STS\_MALLOC\_FAILED | 所需的额外内存申请失败。 |


#### 示例

```
#define BUFFER_SIZE_T 10
int main()
{
float dst[BUFFER_SIZE_T];
int32_t i;
float low = 1.0;
float high = 1000.0;
float seed = 0;
HmppsRandUniformPolicy_32f *policy = NULL;
HmppResult result;
result = HMPPS_RandUniformInit_32f(&policy, low, high, seed);
if (result != HMPP_STS_NO_ERR)
{
return;
}
result = HMPPS_RandUniform_32f(dst, BUFFER_SIZE_T, policy);
printf("result = %d \ndst =", result);
for (i = 0; i < BUFFER_SIZE_T; i++) {
printf(" %f  ", dst[i]);
}
HMPPS_RandUniformRelease_32f(policy);
return 0;
}
```

运行结果：

```
result = 0
dst = 171.657196   750.152100   97.275284   870.594727   577.726196   786.013489   692.501953   369.397522   874.030151   745.349976
```