---
title: KmlDss(Spd/Hpd)Get?I(D/S)
description: "获取与handle关联的实数型值。"
url: https://www.hikunpeng.com/document/detail/zh/kunpenghpcs/hpckit/devg/kunpengaccel_kml_0887.html
sourcePath: /source/zh/kunpenghpcs/hpckit/devg/kunpengaccel_kml_0887.html
indexId: 2c132b9b97736c71b9b316e4435aaacef988cbacb42c0e851ebfc8cf6c50320661
---
# KmlDss(Spd/Hpd)Get?I(D/S)

获取与handle关联的实数型值。

#### 接口定义

C Interface：

int KmlDssSpdGetSIS(KmlSolverTask **pHandle, enum KmlSolverParam param, float *value, int nvalue);

int KmlDssSpdGetDID(KmlSolverTask **pHandle, enum KmlSolverParam param, double *value, int nvalue);

int KmlDssHpdGetCIS(KmlSolverTask **pHandle, enum KmlSolverParam param, float *value, int nvalue);

int KmlDssHpdGetZID(KmlSolverTask **pHandle, enum KmlSolverParam param, double *value, int nvalue);


#### 参数

| 参数名 | 类型 | 描述 | 输入/输出 |
| --- | --- | --- | --- |
| pHandle | KmlSolverTask \*\* | 求解器句柄，pHandle不可为空指针。 | 输入 |
| param | enum KmlSolverParam | 当前仅支持KMLSS\_REFINEMENT\_RESIDUAL，表示迭代优化的残差。 | 输入 |
| value | double \*或float \* | 直接求解相关参数数组。 | 输出 |
| nvalue | int | value数组元素个数，要求与右端项数目nb一致。 | 输入 |


#### 返回值

| 返回值 | 类型 | 描述 |
| --- | --- | --- |
| KMLSS\_NO\_ERROR | int | 正常执行。 |
| KMLSS\_NULL\_ARGUMENT | int | pHandle或data为空指针、或者参数不合理。 |
| KMLSS\_BAD\_HANDLE | int | pHandle格式存在问题。 |
| KMLSS\_BAD\_DATA\_SIZE | int | 用户设定的value数组长度nvalue不合理，即与右端项数目不一致。 |
| KMLSS\_BAD\_SELECTOR | int | 用户的KML\_SOLVER\_PARAM输入当前不支持，或在求解过程中不存在。 |


#### 依赖

#include "kml_dss.h"或#include "kml_solver.h"


#### 示例

C Interface：

```
int n = 2;
int ia[3] = {0,2,4};
int ja[4] = {0,1,0,1};
double a[4] = {2,1,1,2};
double b[2] = {3,1};
double x[2];
int nrhs = 1;
int ldx = n, ldb = n;
KmlSolverTask *handle;
int ierr = KmlDssSpdInitDI(&handle, n, a, ja, ia);
if (ierr != 0) {
printf("\nERROR in KmlDssSpdInitDI: %d", ierr);
}
ierr = KmlDssSpdAnalyzeDI(&handle);
if (ierr != 0) {
printf("\nERROR in KmlDssSpdAnalyzeDI: %d", ierr);
}
ierr = KmlDssSpdFactorizeDI(&handle);
if (ierr != 0) {
printf("\nERROR in KmlDssSpdFactorizeDI: %d", ierr);
}
double tolerance = 1.e-12;
ierr = KmlDssSpdSetDID(&handle, KMLSS_REFINEMENT_TOLERANCE_LEVEL, &tolerance, 1);
if (ierr != 0) {
printf("\nERROR in KmlDssSpdSetDID: %d", ierr);
}
int nsteps = 2;
ierr = KmlDssSpdSetDII(&handle, KMLSS_REFINEMENT_MAX_STEPS, &nsteps, 1);
if (ierr != 0) {
printf("\nERROR in KmlDssSpdSetDII: %d", ierr);
}
ierr = KmlDssSpdSolveDI(&handle, nrhs, x, ldx, b, ldb);
if (ierr != 0) {
printf("\nERROR in KmlDssSpdSolveDI: %d", ierr);
}
double res;
ierr = KmlDssSpdGetDID(&handle, KMLSS_REFINEMENT_RESIDUAL, &res, 1);
if (ierr != 0) {
printf("\nERROR in KmlDssSpdGetDID: %d", ierr);
}
printf("REFINEMENT_RESIDUAL = %f\n", res);
```

运行结果：
```
REFINEMENT_RESIDUAL = 0.000000
```