---
title: kml_?_interp2d_min_size
description: "返回插值对象interp或插值类型T所需要的最小的点的数量。例如，双三次插值最小需要4个点。"
url: https://www.hikunpeng.com/document/detail/zh/kunpenghpcs/hpckit/devg/kunpengaccel_kml_0529.html
sourcePath: /source/zh/kunpenghpcs/hpckit/devg/kunpengaccel_kml_0529.html
indexId: 90e493b62a15bb0a1c7cede9d8d856ec69724b5619c86332feaf262719b4544e61
---
# kml_?_interp2d_min_size

返回插值对象interp或插值类型T所需要的最小的点的数量。例如，双三次插值最小需要4个点。

#### 接口定义

size_t kml_float_interp2d_min_size(const kml_float_interp2d *interp)

size_t kml_float_interp2d_type_min_size(const kml_float_interp2d_type *T)

size_t kml_double_interp2d_min_size(const kml_double_interp2d *interp);

size_t kml_double_interp2d_type_min_size(const kml_double_interp2d_type *T);


#### 参数

| 参数名 | 类型 | 描述 | 输入/输出 |
| --- | --- | --- | --- |
| interp | const kml\_float\_interp2d\* / const kml\_double\_interp2d\* | 指向插值对象的指针。 | 输入 |


#### 依赖

#include "kipl.h"


#### 示例

```
const size_t xSize = 4;
const size_t ySize = 4;
float xArr[4] = {1,1.33,1.67,2};
float yArr[4] = {1,1.33,1.67,2};
float* zArr = (float*)malloc(xSize * ySize * sizeof(float));
float x = 1;
float y = 1;
float z = 0;
kml_float_interp2d *interp = kml_float_interp2d_alloc(kml_float_interp2d_bicubic, xSize, ySize);
size_t min_size = kml_float_interp2d_min_size(interp);
```