KmlDssGenGet?IL

获取与handle关联的长整型值。

接口定义

C Interface：

int KmlDssGenGetSIL(KmlSolverTask **pHandle, enum KmlSolverParam param, int64_t *value, int nvalue);

int KmlDssGenGetDIL(KmlSolverTask **pHandle, enum KmlSolverParam param, int64_t *value, int nvalue);

int KmlDssGenGetCIL(KmlSolverTask **pHandle, enum KmlSolverParam param, int64_t *value, int nvalue);

int KmlDssGenGetZIL(KmlSolverTask **pHandle, enum KmlSolverParam param, int64_t *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_FILL_IN表示填入数目。	输入
value	int64_t	直接求解相关参数数组。	输出
nvalue	int	value数组元素个数，目前要求为1。	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。
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。
KMLSS_INTERNAL_ERROR	int	pHandle状态异常，KMLSS_FILL_IN获取失败。
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, 3, 7, 9, 11, 13, 15, 16, 17};
int ja[17] = {0, 3, 4, 1, 2, 3, 5, 2, 7, 3, 6, 4, 5, 5, 7, 6, 7};
double a[17] = {1.0, 1.0, 2.0, 9.0, 2.0, 1.0, -3.0, 3.0, 2.0, 9.0, -5.0, 6.0, 1.0, 4.0, 1.0, 7.0, 2.0};
double b[8] = {4.0, 9.0, 7.0, 6.0, 9.0, 3.0, 2.0, 5.0};
double x[8];
KmlScasolverTask* matrix_handle = NULL;
int ierr = KmlScadssSpdInitDI(&matrix_handle, n, a, ja, ia, MPI_COMM_WORLD);
ierr = KmlScadssSpdAnalyzeDI(&matrix_handle);

int nrhs = 1;
int ldx=n, ldb=n;
ierr = KmlScadssSpdSolveDI(&matrix_handle, nrhs, x, ldx, b, ldb);
if (rank == 0) {
    int64_t nnz;
    ierr = KmlScadssSpdGetDI(&matrix_handle, KMLSS_FILL_IN, &nnz, 1);
    printf("NNZ = %ld\n", nnz);
}

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);
}
ierr = KmlDssGenSolveDI(&handle, nrhs, x, ldx, b, ldb);
if (ierr != 0) {
    printf("\nERROR in KmlDssGenSolveDI: %d", ierr);
}

int64_t nnz;
ierr = KmlDssGenGetDIL(&handle, KMLSS_FILL_IN, &nnz, 1);
if (ierr != 0) {
    printf("\nERROR in KmlDssGenGetDIL: %d", ierr);
}
printf("NNZ = %ld\n", nnz);

运行结果：

NNZ = 32

父主题： LU