LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dsposv()

lapack_int LAPACKE_dsposv ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
double *  x,
lapack_int  ldx,
lapack_int iter 
)

Definition at line 35 of file lapacke_dsposv.c.

39{
40 lapack_int info = 0;
41 float* swork = NULL;
42 double* work = NULL;
43 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44 LAPACKE_xerbla( "LAPACKE_dsposv", -1 );
45 return -1;
46 }
47#ifndef LAPACK_DISABLE_NAN_CHECK
48 if( LAPACKE_get_nancheck() ) {
49 /* Optionally check input matrices for NaNs */
50 if( LAPACKE_dpo_nancheck( matrix_layout, uplo, n, a, lda ) ) {
51 return -5;
52 }
53 if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
54 return -7;
55 }
56 }
57#endif
58 /* Allocate memory for working array(s) */
59 swork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) * MAX(1,n+nrhs) );
60 if( swork == NULL ) {
62 goto exit_level_0;
63 }
64 work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) * MAX(1,nrhs) );
65 if( work == NULL ) {
67 goto exit_level_1;
68 }
69 /* Call middle-level interface */
70 info = LAPACKE_dsposv_work( matrix_layout, uplo, n, nrhs, a, lda, b, ldb, x,
71 ldx, work, swork, iter );
72 /* Release memory and exit */
73 LAPACKE_free( work );
74exit_level_1:
75 LAPACKE_free( swork );
76exit_level_0:
77 if( info == LAPACK_WORK_MEMORY_ERROR ) {
78 LAPACKE_xerbla( "LAPACKE_dsposv", info );
79 }
80 return info;
81}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
lapack_int LAPACKE_dsposv_work(int matrix_layout, char uplo, lapack_int n, lapack_int nrhs, double *a, lapack_int lda, double *b, lapack_int ldb, double *x, lapack_int ldx, double *work, float *swork, lapack_int *iter)
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_dpo_nancheck(int matrix_layout, char uplo, lapack_int n, const double *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
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