LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgeesx_work()

lapack_int LAPACKE_dgeesx_work ( int  matrix_layout,
char  jobvs,
char  sort,
LAPACK_D_SELECT2  select,
char  sense,
lapack_int  n,
double *  a,
lapack_int  lda,
lapack_int sdim,
double *  wr,
double *  wi,
double *  vs,
lapack_int  ldvs,
double *  rconde,
double *  rcondv,
double *  work,
lapack_int  lwork,
lapack_int iwork,
lapack_int  liwork,
lapack_logical bwork 
)

Definition at line 36 of file lapacke_dgeesx_work.c.

44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_dgeesx( &jobvs, &sort, select, &sense, &n, a, &lda, sdim, wr, wi,
49  vs, &ldvs, rconde, rcondv, work, &lwork, iwork, &liwork,
50  bwork, &info );
51  if( info < 0 ) {
52  info = info - 1;
53  }
54  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
55  lapack_int lda_t = MAX(1,n);
56  lapack_int ldvs_t = MAX(1,n);
57  double* a_t = NULL;
58  double* vs_t = NULL;
59  /* Check leading dimension(s) */
60  if( lda < n ) {
61  info = -8;
62  LAPACKE_xerbla( "LAPACKE_dgeesx_work", info );
63  return info;
64  }
65  if( ldvs < n ) {
66  info = -13;
67  LAPACKE_xerbla( "LAPACKE_dgeesx_work", info );
68  return info;
69  }
70  /* Query optimal working array(s) size if requested */
71  if( liwork == -1 || lwork == -1 ) {
72  LAPACK_dgeesx( &jobvs, &sort, select, &sense, &n, a, &lda_t, sdim,
73  wr, wi, vs, &ldvs_t, rconde, rcondv, work, &lwork,
74  iwork, &liwork, bwork, &info );
75  return (info < 0) ? (info - 1) : info;
76  }
77  /* Allocate memory for temporary array(s) */
78  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
79  if( a_t == NULL ) {
81  goto exit_level_0;
82  }
83  if( LAPACKE_lsame( jobvs, 'v' ) ) {
84  vs_t = (double*)
85  LAPACKE_malloc( sizeof(double) * ldvs_t * MAX(1,n) );
86  if( vs_t == NULL ) {
88  goto exit_level_1;
89  }
90  }
91  /* Transpose input matrices */
92  LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
93  /* Call LAPACK function and adjust info */
94  LAPACK_dgeesx( &jobvs, &sort, select, &sense, &n, a_t, &lda_t, sdim, wr,
95  wi, vs_t, &ldvs_t, rconde, rcondv, work, &lwork, iwork,
96  &liwork, bwork, &info );
97  if( info < 0 ) {
98  info = info - 1;
99  }
100  /* Transpose output matrices */
101  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
102  if( LAPACKE_lsame( jobvs, 'v' ) ) {
103  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vs_t, ldvs_t, vs, ldvs );
104  }
105  /* Release memory and exit */
106  if( LAPACKE_lsame( jobvs, 'v' ) ) {
107  LAPACKE_free( vs_t );
108  }
109 exit_level_1:
110  LAPACKE_free( a_t );
111 exit_level_0:
112  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
113  LAPACKE_xerbla( "LAPACKE_dgeesx_work", info );
114  }
115  } else {
116  info = -1;
117  LAPACKE_xerbla( "LAPACKE_dgeesx_work", info );
118  }
119  return info;
120 }
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
void LAPACK_dgeesx(char *jobvs, char *sort, LAPACK_D_SELECT2 select, char *sense, lapack_int *n, double *a, lapack_int *lda, lapack_int *sdim, double *wr, double *wi, double *vs, lapack_int *ldvs, double *rconde, double *rcondv, double *work, lapack_int *lwork, lapack_int *iwork, lapack_int *liwork, lapack_logical *bwork, lapack_int *info)
#define LAPACKE_free(p)
Definition: lapacke.h:113
#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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