---
title: KmlDssGenGet?I(D/S)
description: "获取与handle关联的实数型值。"
url: https://www.hikunpeng.com/document/detail/zh/kunpengboostkithistory/240RC2/accel/kunpengaccel_kml_16_0492.html
sourcePath: /source/zh/kunpengboostkithistory/240RC2/accel/kunpengaccel_kml_16_0492.html
indexId: afd905327b0f299a6f276daa99ee5b21fbcd489169a38212de66447d0250a2b576
---
# KmlDssGenGet?I(D/S)

获取与handle关联的实数型值。

#### 接口定义

C Interface：

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

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

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

int KmlDssGenGetZID(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 | 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。 | 输入 |
| nvalue | int | value数组元素个数。 | 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 = 8;
int ia[9] = {0, 2, 4, 6, 7, 8, 10, 12, 14};
int ja[14] = {0, 7, 1, 6, 2, 5, 3, 4, 2, 5, 1, 6, 0, 7};
double a[14] = {1.0, 2.0, -2.0, 3.0, 3.0, 4.0, -4.0, 5.0, 4.0, -6.0, 3.0, 7.0, 2.0, 8.0};
double b[8] = {3.0, 1.0, 7.0, -4.0, 5.0, -2.0, 10.0, 10.0};
double x[8];
int nrhs = 1;
int ldx = n, ldb = n;
KmlSolverTask *handle;
int ierr = KmlDssGenInitDI(&handle, n, a, ja, ia);
if (ierr != 0) {
printf("\nERROR in KmlDssGenInitDI: %d", ierr);
}
ierr = KmlDssGenAnalyzeDI(&handle);
if (ierr != 0) {
printf("\nERROR in KmlDssGenAnalyzeDI: %d", ierr);
}
ierr = KmlDssGenFactorizeDI(&handle);
if (ierr != 0) {
printf("\nERROR in KmlDssGenFactorizeDI: %d", ierr);
}
double tolerance = 1.e-12;
ierr = KmlDssGenSetDID(&handle, KMLSS_REFINEMENT_TOLERANCE_LEVEL, &tolerance, 1);
if (ierr != 0) {
printf("\nERROR in KmlDssGenSetDID: %d", ierr);
}
int nsteps = 2;
ierr = KmlDssGenSetDII(&handle, KMLSS_REFINEMENT_MAX_STEPS, &nsteps, 1);
if (ierr != 0) {
printf("\nERROR in KmlDssGenSetDII: %d", ierr);
}
ierr = KmlDssGenSolveDI(&handle, nrhs, x, ldx, b, ldb);
if (ierr != 0) {
printf("\nERROR in KmlDssGenSolveDI: %d", ierr);
}
double res;
ierr = KmlDssGenGetDID(&handle, KMLSS_REFINEMENT_RESIDUAL, &res, 1);
if (ierr != 0) {
printf("\nERROR in KmlDssGenGetDID: %d", ierr);
}
printf("REFINEMENT_RESIDUAL = %f\n", res);
```

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