LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgeev()

lapack_int LAPACKE_dgeev ( int  matrix_layout,
char  jobvl,
char  jobvr,
lapack_int  n,
double *  a,
lapack_int  lda,
double *  wr,
double *  wi,
double *  vl,
lapack_int  ldvl,
double *  vr,
lapack_int  ldvr 
)

Definition at line 36 of file lapacke_dgeev.c.

40 {
41  lapack_int info = 0;
42  lapack_int lwork = -1;
43  double* work = NULL;
44  double work_query;
45  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46  LAPACKE_xerbla( "LAPACKE_dgeev", -1 );
47  return -1;
48  }
49 #ifndef LAPACK_DISABLE_NAN_CHECK
50  /* Optionally check input matrices for NaNs */
51  if( LAPACKE_dge_nancheck( matrix_layout, n, n, a, lda ) ) {
52  return -5;
53  }
54 #endif
55  /* Query optimal working array(s) size */
56  info = LAPACKE_dgeev_work( matrix_layout, jobvl, jobvr, n, a, lda, wr, wi,
57  vl, ldvl, vr, ldvr, &work_query, lwork );
58  if( info != 0 ) {
59  goto exit_level_0;
60  }
61  lwork = (lapack_int)work_query;
62  /* Allocate memory for work arrays */
63  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
64  if( work == NULL ) {
66  goto exit_level_0;
67  }
68  /* Call middle-level interface */
69  info = LAPACKE_dgeev_work( matrix_layout, jobvl, jobvr, n, a, lda, wr, wi,
70  vl, ldvl, vr, ldvr, work, lwork );
71  /* Release memory and exit */
72  LAPACKE_free( work );
73 exit_level_0:
74  if( info == LAPACK_WORK_MEMORY_ERROR ) {
75  LAPACKE_xerbla( "LAPACKE_dgeev", info );
76  }
77  return info;
78 }
lapack_int LAPACKE_dgeev_work(int matrix_layout, char jobvl, char jobvr, lapack_int n, double *a, lapack_int lda, double *wr, double *wi, double *vl, lapack_int ldvl, double *vr, lapack_int ldvr, double *work, lapack_int lwork)
#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_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
#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
Here is the call graph for this function: