LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgees_work()

lapack_int LAPACKE_dgees_work ( int  matrix_layout,
char  jobvs,
char  sort,
LAPACK_D_SELECT2  select,
lapack_int  n,
double *  a,
lapack_int  lda,
lapack_int sdim,
double *  wr,
double *  wi,
double *  vs,
lapack_int  ldvs,
double *  work,
lapack_int  lwork,
lapack_logical bwork 
)

Definition at line 36 of file lapacke_dgees_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_dgees( &jobvs, &sort, select, &n, a, &lda, sdim, wr, wi, vs,
47  &ldvs, work, &lwork, bwork, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int lda_t = MAX(1,n);
53  lapack_int ldvs_t = MAX(1,n);
54  double* a_t = NULL;
55  double* vs_t = NULL;
56  /* Check leading dimension(s) */
57  if( lda < n ) {
58  info = -7;
59  LAPACKE_xerbla( "LAPACKE_dgees_work", info );
60  return info;
61  }
62  if( ldvs < n ) {
63  info = -12;
64  LAPACKE_xerbla( "LAPACKE_dgees_work", info );
65  return info;
66  }
67  /* Query optimal working array(s) size if requested */
68  if( lwork == -1 ) {
69  LAPACK_dgees( &jobvs, &sort, select, &n, a, &lda_t, sdim, wr, wi,
70  vs, &ldvs_t, work, &lwork, bwork, &info );
71  return (info < 0) ? (info - 1) : info;
72  }
73  /* Allocate memory for temporary array(s) */
74  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
75  if( a_t == NULL ) {
77  goto exit_level_0;
78  }
79  if( LAPACKE_lsame( jobvs, 'v' ) ) {
80  vs_t = (double*)
81  LAPACKE_malloc( sizeof(double) * ldvs_t * MAX(1,n) );
82  if( vs_t == NULL ) {
84  goto exit_level_1;
85  }
86  }
87  /* Transpose input matrices */
88  LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
89  /* Call LAPACK function and adjust info */
90  LAPACK_dgees( &jobvs, &sort, select, &n, a_t, &lda_t, sdim, wr, wi,
91  vs_t, &ldvs_t, work, &lwork, bwork, &info );
92  if( info < 0 ) {
93  info = info - 1;
94  }
95  /* Transpose output matrices */
96  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
97  if( LAPACKE_lsame( jobvs, 'v' ) ) {
98  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vs_t, ldvs_t, vs, ldvs );
99  }
100  /* Release memory and exit */
101  if( LAPACKE_lsame( jobvs, 'v' ) ) {
102  LAPACKE_free( vs_t );
103  }
104 exit_level_1:
105  LAPACKE_free( a_t );
106 exit_level_0:
107  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
108  LAPACKE_xerbla( "LAPACKE_dgees_work", info );
109  }
110  } else {
111  info = -1;
112  LAPACKE_xerbla( "LAPACKE_dgees_work", info );
113  }
114  return info;
115 }
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_dgees(char *jobvs, char *sort, LAPACK_D_SELECT2 select, lapack_int *n, double *a, lapack_int *lda, lapack_int *sdim, double *wr, double *wi, double *vs, lapack_int *ldvs, double *work, lapack_int *lwork, lapack_logical *bwork, lapack_int *info)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#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
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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