---
title: SortRadixIndex
description: "向量基数排序，包括升序和降序，输出排序后的索引。"
url: https://www.hikunpeng.com/document/detail/zh/kunpengboostkithistory/2300/accel/kunpengaccel_hmpp_06_0173.html
sourcePath: /source/zh/kunpengboostkithistory/2300/accel/kunpengaccel_hmpp_06_0173.html
indexId: 11f56848d17a68e6a19e83724403a7e177ed82531a7d40259107a8555c2b99ae75
---
# SortRadixIndex

向量基数排序，包括升序和降序，输出排序后的索引。

函数接口声明如下：- 辅助函数：
  HmppResult HMPPS_SortRadixIndexInit(int32_t len, HmppDataType dataType, uint8_t **buffer);

  HmppResult HMPPS_SortRadixIndexRelease(uint8_t* buffer);

- 整型数的升序排序：
  HmppResult HMPPS_SortRadixIndexAscend_8u(const uint8_t *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

  HmppResult HMPPS_SortRadixIndexAscend_16u(const uint16_t *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

  HmppResult HMPPS_SortRadixIndexAscend_16s(const int16_t *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

  HmppResult HMPPS_SortRadixIndexAscend_32u(const uint32_t *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

  HmppResult HMPPS_SortRadixIndexAscend_32s(const int32_t *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

  HmppResult HMPPS_SortRadixIndexAscend_64u(const uint64_t *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

  HmppResult HMPPS_SortRadixIndexAscend_64s(const int64_t *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

- 浮点数的升序排序：
  HmppResult HMPPS_SortRadixIndexAscend_32f(const float *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

  HmppResult HMPPS_SortRadixIndexAscend_64f(const double *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

- 整型数的降序排序：
  HmppResult HMPPS_SortRadixIndexDescend_8u(const uint8_t *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

  HmppResult HMPPS_SortRadixIndexDescend_16u(const uint16_t *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

  HmppResult HMPPS_SortRadixIndexDescend_16s(const int16_t *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

  HmppResult HMPPS_SortRadixIndexDescend_32u(const uint32_t *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

  HmppResult HMPPS_SortRadixIndexDescend_32s(const int32_t *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

  HmppResult HMPPS_SortRadixIndexDescend_64u(const uint64_t *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

  HmppResult HMPPS_SortRadixIndexDescend_64s(const int64_t *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

- 浮点数的降序排序：
  HmppResult HMPPS_SortRadixIndexDescend_32f(const float *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);

  HmppResult HMPPS_SortRadixIndexDescend_64f(const double *src, int32_t srcStrideBytes, int32_t *dstIdx, int32_t len, uint8_t* buffer);


#### 参数

| 参数名 | 描述 | 取值范围 | 输入/输出 |
| --- | --- | --- | --- |
| srcDst | 指向原址操作向量的指针。 | 非空。 | 输入/输出 |
| srcStrideBytes | 两个源向量之间的距离，单位字节。 | 大于等于sizeof(T)，其中T为数据类型。 | 输入 |
| len | 向量长度。 | (0, INT\_MAX]。 | 输入 |
| buffer | 指向申请空间的指针。 | 非空。 | 输入 |
| dataType | 数据类型。 | 枚举类型HmppDataType。 | 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 | srcDst、buffer中存在空指针。 |
| HMPP\_STS\_SIZE\_ERR | len小于或等于0。 |
| HMPP\_STS\_DATA\_TYPE\_ERR | 数据类型错误。 |
| HMPP\_STS\_MALLOC\_FAILED | 内存申请失败。 |


#### 示例

```
#define BUFFER_SIZE_T 4
struct C{
uint8_t key1;
uint8_t key2;
float data;
}C;
void Sort_Example() {
struct C c_array[BUFFER_SIZE_T] = {{0,2,1.0f}, {1,3,2.0f}, {1,4,3.0f}, {8,2,10.0f}};
uint8_t *buffer1,*buffer2;
int32_t idx1[BUFFER_SIZE_T], idx2[BUFFER_SIZE_T];
int32_t i;
HMPPS_SortRadixIndexInit(BUFFER_SIZE_T, HMPP8U, &buffer1);
HmppResult result1 = HMPPS_SortRadixIndexDescend_8u(&c_array[0].key1, sizeof(C), idx1, BUFFER_SIZE_T, buffer1);
if (result1 == HMPP_STS_NO_ERR) {
printf("result1 = %d\n", result1);
printf("idx1 = ");
for (i = 0; i < BUFFER_SIZE_T; i++) {
printf("%d ", idx1[i]);
}
printf("\n");
}
HMPPS_SortRadixIndexRelease(buffer1);
HMPPS_SortRadixIndexInit(BUFFER_SIZE_T, HMPP32F, &buffer2);
HmppResult result2 = HMPPS_SortRadixIndexAscend_32f(&c_array[0].data, sizeof(C), idx2, BUFFER_SIZE_T, buffer2);
if (result2 == HMPP_STS_NO_ERR) {
printf("result2 = %d\n", result2);
printf("idx2 = ");
for (i = 0; i < BUFFER_SIZE_T; i++) {
printf("%d ", idx2[i]);
}
printf("\n");
}
HMPPS_SortRadixIndexRelease(buffer2);
}
```

运行结果：

```
result1 = 0
idx1 = 3 1 2 0
result2 = 0
idx2 = 0 1 2 3
```