LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgeevx_work()

lapack_int LAPACKE_dgeevx_work ( int  matrix_layout,
char  balanc,
char  jobvl,
char  jobvr,
char  sense,
lapack_int  n,
double *  a,
lapack_int  lda,
double *  wr,
double *  wi,
double *  vl,
lapack_int  ldvl,
double *  vr,
lapack_int  ldvr,
lapack_int ilo,
lapack_int ihi,
double *  scale,
double *  abnrm,
double *  rconde,
double *  rcondv,
double *  work,
lapack_int  lwork,
lapack_int iwork 
)

Definition at line 36 of file lapacke_dgeevx_work.c.

44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_dgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda, wr, wi, vl,
49  &ldvl, vr, &ldvr, ilo, ihi, scale, abnrm, rconde, rcondv,
50  work, &lwork, iwork, &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 ldvl_t = MAX(1,n);
57  lapack_int ldvr_t = MAX(1,n);
58  double* a_t = NULL;
59  double* vl_t = NULL;
60  double* vr_t = NULL;
61  /* Check leading dimension(s) */
62  if( lda < n ) {
63  info = -8;
64  LAPACKE_xerbla( "LAPACKE_dgeevx_work", info );
65  return info;
66  }
67  if( ldvl < n ) {
68  info = -12;
69  LAPACKE_xerbla( "LAPACKE_dgeevx_work", info );
70  return info;
71  }
72  if( ldvr < n ) {
73  info = -14;
74  LAPACKE_xerbla( "LAPACKE_dgeevx_work", info );
75  return info;
76  }
77  /* Query optimal working array(s) size if requested */
78  if( lwork == -1 ) {
79  LAPACK_dgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda_t, wr,
80  wi, vl, &ldvl_t, vr, &ldvr_t, ilo, ihi, scale, abnrm,
81  rconde, rcondv, work, &lwork, iwork, &info );
82  return (info < 0) ? (info - 1) : info;
83  }
84  /* Allocate memory for temporary array(s) */
85  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
86  if( a_t == NULL ) {
88  goto exit_level_0;
89  }
90  if( LAPACKE_lsame( jobvl, 'v' ) ) {
91  vl_t = (double*)
92  LAPACKE_malloc( sizeof(double) * ldvl_t * MAX(1,n) );
93  if( vl_t == NULL ) {
95  goto exit_level_1;
96  }
97  }
98  if( LAPACKE_lsame( jobvr, 'v' ) ) {
99  vr_t = (double*)
100  LAPACKE_malloc( sizeof(double) * ldvr_t * MAX(1,n) );
101  if( vr_t == NULL ) {
103  goto exit_level_2;
104  }
105  }
106  /* Transpose input matrices */
107  LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
108  /* Call LAPACK function and adjust info */
109  LAPACK_dgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a_t, &lda_t, wr, wi,
110  vl_t, &ldvl_t, vr_t, &ldvr_t, ilo, ihi, scale, abnrm,
111  rconde, rcondv, work, &lwork, iwork, &info );
112  if( info < 0 ) {
113  info = info - 1;
114  }
115  /* Transpose output matrices */
116  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
117  if( LAPACKE_lsame( jobvl, 'v' ) ) {
118  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vl_t, ldvl_t, vl, ldvl );
119  }
120  if( LAPACKE_lsame( jobvr, 'v' ) ) {
121  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vr_t, ldvr_t, vr, ldvr );
122  }
123  /* Release memory and exit */
124  if( LAPACKE_lsame( jobvr, 'v' ) ) {
125  LAPACKE_free( vr_t );
126  }
127 exit_level_2:
128  if( LAPACKE_lsame( jobvl, 'v' ) ) {
129  LAPACKE_free( vl_t );
130  }
131 exit_level_1:
132  LAPACKE_free( a_t );
133 exit_level_0:
134  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
135  LAPACKE_xerbla( "LAPACKE_dgeevx_work", info );
136  }
137  } else {
138  info = -1;
139  LAPACKE_xerbla( "LAPACKE_dgeevx_work", info );
140  }
141  return info;
142 }
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
void LAPACK_dgeevx(char *balanc, char *jobvl, char *jobvr, char *sense, lapack_int *n, double *a, lapack_int *lda, double *wr, double *wi, double *vl, lapack_int *ldvl, double *vr, lapack_int *ldvr, lapack_int *ilo, lapack_int *ihi, double *scale, double *abnrm, double *rconde, double *rcondv, double *work, lapack_int *lwork, lapack_int *iwork, lapack_int *info)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#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
Here is the call graph for this function:
Here is the caller graph for this function: