LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgeevx()

lapack_int LAPACKE_zgeevx ( int  matrix_layout,
char  balanc,
char  jobvl,
char  jobvr,
char  sense,
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_int ilo,
lapack_int ihi,
double *  scale,
double *  abnrm,
double *  rconde,
double *  rcondv 
)

Definition at line 36 of file lapacke_zgeevx.c.

44 {
45  lapack_int info = 0;
46  lapack_int lwork = -1;
47  double* rwork = NULL;
48  lapack_complex_double* work = NULL;
49  lapack_complex_double work_query;
50  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
51  LAPACKE_xerbla( "LAPACKE_zgeevx", -1 );
52  return -1;
53  }
54 #ifndef LAPACK_DISABLE_NAN_CHECK
55  if( LAPACKE_get_nancheck() ) {
56  /* Optionally check input matrices for NaNs */
57  if( LAPACKE_zge_nancheck( matrix_layout, n, n, a, lda ) ) {
58  return -7;
59  }
60  }
61 #endif
62  /* Allocate memory for working array(s) */
63  rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
64  if( rwork == NULL ) {
66  goto exit_level_0;
67  }
68  /* Query optimal working array(s) size */
69  info = LAPACKE_zgeevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
70  lda, w, vl, ldvl, vr, ldvr, ilo, ihi, scale,
71  abnrm, rconde, rcondv, &work_query, lwork,
72  rwork );
73  if( info != 0 ) {
74  goto exit_level_1;
75  }
76  lwork = LAPACK_Z2INT( work_query );
77  /* Allocate memory for work arrays */
78  work = (lapack_complex_double*)
79  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
80  if( work == NULL ) {
82  goto exit_level_1;
83  }
84  /* Call middle-level interface */
85  info = LAPACKE_zgeevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
86  lda, w, vl, ldvl, vr, ldvr, ilo, ihi, scale,
87  abnrm, rconde, rcondv, work, lwork, rwork );
88  /* Release memory and exit */
89  LAPACKE_free( work );
90 exit_level_1:
91  LAPACKE_free( rwork );
92 exit_level_0:
93  if( info == LAPACK_WORK_MEMORY_ERROR ) {
94  LAPACKE_xerbla( "LAPACKE_zgeevx", info );
95  }
96  return info;
97 }
#define LAPACK_Z2INT(x)
Definition: lapacke.h:117
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
lapack_int LAPACKE_zgeevx_work(int matrix_layout, char balanc, char jobvl, char jobvr, char sense, 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_int *ilo, lapack_int *ihi, double *scale, double *abnrm, double *rconde, double *rcondv, lapack_complex_double *work, lapack_int lwork, double *rwork)
#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
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
int LAPACKE_get_nancheck()
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