LAPACK 3.11.0 LAPACK: Linear Algebra PACKage
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## ◆ LAPACKE_dgesvj()

 lapack_int LAPACKE_dgesvj ( int matrix_layout, char joba, char jobu, char jobv, lapack_int m, lapack_int n, double * a, lapack_int lda, double * sva, lapack_int mv, double * v, lapack_int ldv, double * stat )

Definition at line 35 of file lapacke_dgesvj.c.

39{
40 lapack_int info = 0;
41 lapack_int lwork = MAX(6,m+n);
42 double* work = NULL;
43 lapack_int i;
44 lapack_int nrows_v;
45 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46 LAPACKE_xerbla( "LAPACKE_dgesvj", -1 );
47 return -1;
48 }
49#ifndef LAPACK_DISABLE_NAN_CHECK
50 if( LAPACKE_get_nancheck() ) {
51 /* Optionally check input matrices for NaNs */
52 nrows_v = LAPACKE_lsame( jobv, 'v' ) ? MAX(0,n) :
53 ( LAPACKE_lsame( jobv, 'a' ) ? MAX(0,mv) : 0);
54 if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
55 return -7;
56 }
57 if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 'v' ) ) {
58 if( LAPACKE_dge_nancheck( matrix_layout, nrows_v, n, v, ldv ) ) {
59 return -11;
60 }
61 }
62 }
63#endif
64 /* Allocate memory for working array(s) */
65 work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
66 if( work == NULL ) {
68 goto exit_level_0;
69 }
70 work[0] = stat[0]; /* Significant if jobu = 'c' */
71 /* Call middle-level interface */
72 info = LAPACKE_dgesvj_work( matrix_layout, joba, jobu, jobv, m, n, a, lda,
73 sva, mv, v, ldv, work, lwork );
74 /* Backup significant data from working array(s) */
75 for( i=0; i<6; i++ ) {
76 stat[i] = work[i];
77 }
78 /* Release memory and exit */
79 LAPACKE_free( work );
80exit_level_0:
81 if( info == LAPACK_WORK_MEMORY_ERROR ) {
82 LAPACKE_xerbla( "LAPACKE_dgesvj", info );
83 }
84 return info;
85}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
lapack_int LAPACKE_dgesvj_work(int matrix_layout, char joba, char jobu, char jobv, lapack_int m, lapack_int n, double *a, lapack_int lda, double *sva, lapack_int mv, double *v, lapack_int ldv, double *work, lapack_int lwork)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#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
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
#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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