LAPACK  3.10.1
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 35 of file lapacke_zgeevx.c.

43 {
44  lapack_int info = 0;
45  lapack_int lwork = -1;
46  double* rwork = NULL;
47  lapack_complex_double* work = NULL;
48  lapack_complex_double work_query;
49  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
50  LAPACKE_xerbla( "LAPACKE_zgeevx", -1 );
51  return -1;
52  }
53 #ifndef LAPACK_DISABLE_NAN_CHECK
54  if( LAPACKE_get_nancheck() ) {
55  /* Optionally check input matrices for NaNs */
56  if( LAPACKE_zge_nancheck( matrix_layout, n, n, a, lda ) ) {
57  return -7;
58  }
59  }
60 #endif
61  /* Allocate memory for working array(s) */
62  rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
63  if( rwork == NULL ) {
65  goto exit_level_0;
66  }
67  /* Query optimal working array(s) size */
68  info = LAPACKE_zgeevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
69  lda, w, vl, ldvl, vr, ldvr, ilo, ihi, scale,
70  abnrm, rconde, rcondv, &work_query, lwork,
71  rwork );
72  if( info != 0 ) {
73  goto exit_level_1;
74  }
75  lwork = LAPACK_Z2INT( work_query );
76  /* Allocate memory for work arrays */
77  work = (lapack_complex_double*)
78  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
79  if( work == NULL ) {
81  goto exit_level_1;
82  }
83  /* Call middle-level interface */
84  info = LAPACKE_zgeevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
85  lda, w, vl, ldvl, vr, ldvr, ilo, ihi, scale,
86  abnrm, rconde, rcondv, work, lwork, rwork );
87  /* Release memory and exit */
88  LAPACKE_free( work );
89 exit_level_1:
90  LAPACKE_free( rwork );
91 exit_level_0:
92  if( info == LAPACK_WORK_MEMORY_ERROR ) {
93  LAPACKE_xerbla( "LAPACKE_zgeevx", info );
94  }
95  return info;
96 }
#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
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
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)
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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