LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ 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 36 of file lapacke_dgesvj.c.

40 {
41  lapack_int info = 0;
42  lapack_int lwork = MAX(6,m+n);
43  double* work = NULL;
44  lapack_int i;
45  lapack_int nrows_v;
46  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47  LAPACKE_xerbla( "LAPACKE_dgesvj", -1 );
48  return -1;
49  }
50 #ifndef LAPACK_DISABLE_NAN_CHECK
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 #endif
63  /* Allocate memory for working array(s) */
64  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
65  if( work == NULL ) {
67  goto exit_level_0;
68  }
69  work[0] = stat[0]; /* Significant if jobu = 'c' */
70  /* Call middle-level interface */
71  info = LAPACKE_dgesvj_work( matrix_layout, joba, jobu, jobv, m, n, a, lda,
72  sva, mv, v, ldv, work, lwork );
73  /* Backup significant data from working array(s) */
74  for( i=0; i<6; i++ ) {
75  stat[i] = work[i];
76  }
77  /* Release memory and exit */
78  LAPACKE_free( work );
79 exit_level_0:
80  if( info == LAPACK_WORK_MEMORY_ERROR ) {
81  LAPACKE_xerbla( "LAPACKE_dgesvj", info );
82  }
83  return info;
84 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
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 MAX(x, y)
Definition: lapacke_utils.h:47
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
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