LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dggev3()

lapack_int LAPACKE_dggev3 ( int  matrix_layout,
char  jobvl,
char  jobvr,
lapack_int  n,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
double *  alphar,
double *  alphai,
double *  beta,
double *  vl,
lapack_int  ldvl,
double *  vr,
lapack_int  ldvr 
)

Definition at line 36 of file lapacke_dggev3.c.

43 {
44  lapack_int info = 0;
45  lapack_int lwork = -1;
46  double* work = NULL;
47  double work_query;
48  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49  LAPACKE_xerbla( "LAPACKE_dggev3", -1 );
50  return -1;
51  }
52 #ifndef LAPACK_DISABLE_NAN_CHECK
53  if( LAPACKE_get_nancheck() ) {
54  /* Optionally check input matrices for NaNs */
55  if( LAPACKE_dge_nancheck( matrix_layout, n, n, a, lda ) ) {
56  return -5;
57  }
58  if( LAPACKE_dge_nancheck( matrix_layout, n, n, b, ldb ) ) {
59  return -7;
60  }
61  }
62 #endif
63  /* Query optimal working array(s) size */
64  info = LAPACKE_dggev3_work( matrix_layout, jobvl, jobvr, n, a, lda, b, ldb,
65  alphar, alphai, beta, vl, ldvl, vr, ldvr,
66  &work_query, lwork );
67  if( info != 0 ) {
68  goto exit_level_0;
69  }
70  lwork = (lapack_int)work_query;
71  /* Allocate memory for work arrays */
72  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
73  if( work == NULL ) {
75  goto exit_level_0;
76  }
77  /* Call middle-level interface */
78  info = LAPACKE_dggev3_work( matrix_layout, jobvl, jobvr, n, a, lda, b, ldb,
79  alphar, alphai, beta, vl, ldvl, vr, ldvr, work,
80  lwork );
81  /* Release memory and exit */
82  LAPACKE_free( work );
83 exit_level_0:
84  if( info == LAPACK_WORK_MEMORY_ERROR ) {
85  LAPACKE_xerbla( "LAPACKE_dggev3", info );
86  }
87  return info;
88 }
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
lapack_int LAPACKE_dggev3_work(int matrix_layout, char jobvl, char jobvr, lapack_int n, double *a, lapack_int lda, double *b, lapack_int ldb, double *alphar, double *alphai, double *beta, double *vl, lapack_int ldvl, double *vr, lapack_int ldvr, double *work, lapack_int lwork)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
int LAPACKE_get_nancheck()
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACKE_xerbla(const char *name, lapack_int info)
Here is the call graph for this function: