---
title: HcommReduceOp
description: "定义归约操作类型。"
url: https://www.hiascend.com/document/detail/zh/canncommercial/latest/programug/commopdev/hcclopdevapi_07_0024.html
sourcePath: /source/zh/canncommercial/900/programug/commopdev/hcclopdevapi_07_0024.html
indexId: 4423d900fd30e2c2433a4f5b2f1f529c22c5e1bab67771728a413ab6ac84296075
---
# HcommReduceOp

#### 功能说明

定义归约操作类型。


#### 定义原型

```
typedef enum {
HCOMM_REDUCE_SUM = 0,    /* sum */
HCOMM_REDUCE_PROD = 1,   /* prod */
HCOMM_REDUCE_MAX = 2,    /* max */
HCOMM_REDUCE_MIN = 3,    /* min */
HCOMM_REDUCE_RESERVED = 255  /* reserved */
} HcommReduceOp;
```