LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgeev_work()

lapack_int LAPACKE_zgeev_work ( int  matrix_layout,
char  jobvl,
char  jobvr,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
lapack_complex_double w,
lapack_complex_double vl,
lapack_int  ldvl,
lapack_complex_double vr,
lapack_int  ldvr,
lapack_complex_double work,
lapack_int  lwork,
double *  rwork 
)

Definition at line 36 of file lapacke_zgeev_work.c.

43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_zgeev( &jobvl, &jobvr, &n, a, &lda, w, vl, &ldvl, vr, &ldvr,
48  work, &lwork, rwork, &info );
49  if( info < 0 ) {
50  info = info - 1;
51  }
52  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53  lapack_int lda_t = MAX(1,n);
54  lapack_int ldvl_t = MAX(1,n);
55  lapack_int ldvr_t = MAX(1,n);
56  lapack_complex_double* a_t = NULL;
57  lapack_complex_double* vl_t = NULL;
58  lapack_complex_double* vr_t = NULL;
59  /* Check leading dimension(s) */
60  if( lda < n ) {
61  info = -6;
62  LAPACKE_xerbla( "LAPACKE_zgeev_work", info );
63  return info;
64  }
65  if( ldvl < n ) {
66  info = -9;
67  LAPACKE_xerbla( "LAPACKE_zgeev_work", info );
68  return info;
69  }
70  if( ldvr < n ) {
71  info = -11;
72  LAPACKE_xerbla( "LAPACKE_zgeev_work", info );
73  return info;
74  }
75  /* Query optimal working array(s) size if requested */
76  if( lwork == -1 ) {
77  LAPACK_zgeev( &jobvl, &jobvr, &n, a, &lda_t, w, vl, &ldvl_t, vr,
78  &ldvr_t, work, &lwork, rwork, &info );
79  return (info < 0) ? (info - 1) : info;
80  }
81  /* Allocate memory for temporary array(s) */
82  a_t = (lapack_complex_double*)
83  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
84  if( a_t == NULL ) {
86  goto exit_level_0;
87  }
88  if( LAPACKE_lsame( jobvl, 'v' ) ) {
89  vl_t = (lapack_complex_double*)
91  ldvl_t * MAX(1,n) );
92  if( vl_t == NULL ) {
94  goto exit_level_1;
95  }
96  }
97  if( LAPACKE_lsame( jobvr, 'v' ) ) {
98  vr_t = (lapack_complex_double*)
100  ldvr_t * MAX(1,n) );
101  if( vr_t == NULL ) {
103  goto exit_level_2;
104  }
105  }
106  /* Transpose input matrices */
107  LAPACKE_zge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
108  /* Call LAPACK function and adjust info */
109  LAPACK_zgeev( &jobvl, &jobvr, &n, a_t, &lda_t, w, vl_t, &ldvl_t, vr_t,
110  &ldvr_t, work, &lwork, rwork, &info );
111  if( info < 0 ) {
112  info = info - 1;
113  }
114  /* Transpose output matrices */
115  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
116  if( LAPACKE_lsame( jobvl, 'v' ) ) {
117  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vl_t, ldvl_t, vl, ldvl );
118  }
119  if( LAPACKE_lsame( jobvr, 'v' ) ) {
120  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vr_t, ldvr_t, vr, ldvr );
121  }
122  /* Release memory and exit */
123  if( LAPACKE_lsame( jobvr, 'v' ) ) {
124  LAPACKE_free( vr_t );
125  }
126 exit_level_2:
127  if( LAPACKE_lsame( jobvl, 'v' ) ) {
128  LAPACKE_free( vl_t );
129  }
130 exit_level_1:
131  LAPACKE_free( a_t );
132 exit_level_0:
133  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
134  LAPACKE_xerbla( "LAPACKE_zgeev_work", info );
135  }
136  } else {
137  info = -1;
138  LAPACKE_xerbla( "LAPACKE_zgeev_work", info );
139  }
140  return info;
141 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
#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
void LAPACK_zgeev(char *jobvl, char *jobvr, lapack_int *n, lapack_complex_double *a, lapack_int *lda, lapack_complex_double *w, lapack_complex_double *vl, lapack_int *ldvl, lapack_complex_double *vr, lapack_int *ldvr, lapack_complex_double *work, lapack_int *lwork, double *rwork, lapack_int *info)
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
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