LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgeev()

lapack_int LAPACKE_zgeev ( 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 
)

Definition at line 35 of file lapacke_zgeev.c.

40 {
41  lapack_int info = 0;
42  lapack_int lwork = -1;
43  double* rwork = NULL;
44  lapack_complex_double* work = NULL;
45  lapack_complex_double work_query;
46  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47  LAPACKE_xerbla( "LAPACKE_zgeev", -1 );
48  return -1;
49  }
50 #ifndef LAPACK_DISABLE_NAN_CHECK
51  if( LAPACKE_get_nancheck() ) {
52  /* Optionally check input matrices for NaNs */
53  if( LAPACKE_zge_nancheck( matrix_layout, n, n, a, lda ) ) {
54  return -5;
55  }
56  }
57 #endif
58  /* Allocate memory for working array(s) */
59  rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
60  if( rwork == NULL ) {
62  goto exit_level_0;
63  }
64  /* Query optimal working array(s) size */
65  info = LAPACKE_zgeev_work( matrix_layout, jobvl, jobvr, n, a, lda, w, vl,
66  ldvl, vr, ldvr, &work_query, lwork, rwork );
67  if( info != 0 ) {
68  goto exit_level_1;
69  }
70  lwork = LAPACK_Z2INT( work_query );
71  /* Allocate memory for work arrays */
72  work = (lapack_complex_double*)
73  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
74  if( work == NULL ) {
76  goto exit_level_1;
77  }
78  /* Call middle-level interface */
79  info = LAPACKE_zgeev_work( matrix_layout, jobvl, jobvr, n, a, lda, w, vl,
80  ldvl, vr, ldvr, work, lwork, rwork );
81  /* Release memory and exit */
82  LAPACKE_free( work );
83 exit_level_1:
84  LAPACKE_free( rwork );
85 exit_level_0:
86  if( info == LAPACK_WORK_MEMORY_ERROR ) {
87  LAPACKE_xerbla( "LAPACKE_zgeev", info );
88  }
89  return info;
90 }
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_double
Definition: lapack.h:63
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
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)
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACK_Z2INT(x)
Definition: lapacke.h:50
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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