LAPACK  3.10.1
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 35 of file lapacke_dggev3.c.

42 {
43  lapack_int info = 0;
44  lapack_int lwork = -1;
45  double* work = NULL;
46  double work_query;
47  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48  LAPACKE_xerbla( "LAPACKE_dggev3", -1 );
49  return -1;
50  }
51 #ifndef LAPACK_DISABLE_NAN_CHECK
52  if( LAPACKE_get_nancheck() ) {
53  /* Optionally check input matrices for NaNs */
54  if( LAPACKE_dge_nancheck( matrix_layout, n, n, a, lda ) ) {
55  return -5;
56  }
57  if( LAPACKE_dge_nancheck( matrix_layout, n, n, b, ldb ) ) {
58  return -7;
59  }
60  }
61 #endif
62  /* Query optimal working array(s) size */
63  info = LAPACKE_dggev3_work( matrix_layout, jobvl, jobvr, n, a, lda, b, ldb,
64  alphar, alphai, beta, vl, ldvl, vr, ldvr,
65  &work_query, lwork );
66  if( info != 0 ) {
67  goto exit_level_0;
68  }
69  lwork = (lapack_int)work_query;
70  /* Allocate memory for work arrays */
71  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
72  if( work == NULL ) {
74  goto exit_level_0;
75  }
76  /* Call middle-level interface */
77  info = LAPACKE_dggev3_work( matrix_layout, jobvl, jobvr, n, a, lda, b, ldb,
78  alphar, alphai, beta, vl, ldvl, vr, ldvr, work,
79  lwork );
80  /* Release memory and exit */
81  LAPACKE_free( work );
82 exit_level_0:
83  if( info == LAPACK_WORK_MEMORY_ERROR ) {
84  LAPACKE_xerbla( "LAPACKE_dggev3", info );
85  }
86  return info;
87 }
#define lapack_int
Definition: lapack.h:83
#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
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:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
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