---
title: Zero
description: "把目的地址内存数据清零。"
url: https://www.hikunpeng.com/document/detail/zh/kunpengboostkithistory/2200/accel/kunpengaccel_hmpp_06_0113.html
sourcePath: /source/zh/kunpengboostkithistory/2200/accel/kunpengaccel_hmpp_06_0113.html
indexId: 4291b8c01452e728c9cd1f05d7b2fc7bc4785f365b124020036b44adda4d7e8c75
---
# Zero

把目的地址内存数据清零。

函数接口声明如下：

- 整型数的操作：
  HmppResult HMPPS_Zero_8u(uint8_t* dst, int32_t len);

  HmppResult HMPPS_Zero_16s(int16_t *dst, int32_t len);

  HmppResult HMPPS_Zero_32s(int32_t *dst, int32_t len);

  HmppResult HMPPS_Zero_64s(int64_t* dst, int32_t len);

  HmppResult HMPPS_Zero_16sc(Hmpp16sc* dst, int32_t len);

  HmppResult HMPPS_Zero_32sc(Hmpp32sc* dst, int32_t len);

  HmppResult HMPPS_Zero_64sc(Hmpp64sc* dst, int32_t len);

- 浮点数的操作：
  HmppResult HMPPS_Zero_32f(float *dst, int32_t len);

  HmppResult HMPPS_Zero_64f(double *dst, int32_t len);

  HmppResult HMPPS_Zero_32fc(Hmpp32fc *dst, int32_t len);

  HmppResult HMPPS_Zero_64fc(Hmpp64fc* dst, int32_t len);


#### 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 |


#### 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。 |


#### 示例

```
#define BUFFER_SIZE_T 10
int main()
{
uint8_t dst[BUFFER_SIZE_T];
int32_t i;
HmppResult result = HMPPS_Zero_8u(dst, BUFFER_SIZE_T);
printf("result = %d \ndst =", result);
for (i = 0; i < BUFFER_SIZE_T; i++) {
printf(" %d    ", dst[i]);
}
return 0;
}
```

运行结果：


```
result = 0
dst = 0    0    0    0    0    0    0    0    0    0
```