LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ 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 35 of file lapacke_dgeev.c.

39{
40 lapack_int info = 0;
41 lapack_int lwork = -1;
42 double* work = NULL;
43 double work_query;
44 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45 LAPACKE_xerbla( "LAPACKE_dgeev", -1 );
46 return -1;
47 }
48#ifndef LAPACK_DISABLE_NAN_CHECK
49 if( LAPACKE_get_nancheck() ) {
50 /* Optionally check input matrices for NaNs */
51 if( LAPACKE_dge_nancheck( matrix_layout, n, n, a, lda ) ) {
52 return -5;
53 }
54 }
55#endif
56 /* Query optimal working array(s) size */
57 info = LAPACKE_dgeev_work( matrix_layout, jobvl, jobvr, n, a, lda, wr, wi,
58 vl, ldvl, vr, ldvr, &work_query, lwork );
59 if( info != 0 ) {
60 goto exit_level_0;
61 }
62 lwork = (lapack_int)work_query;
63 /* Allocate memory for work arrays */
64 work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
65 if( work == NULL ) {
67 goto exit_level_0;
68 }
69 /* Call middle-level interface */
70 info = LAPACKE_dgeev_work( matrix_layout, jobvl, jobvr, n, a, lda, wr, wi,
71 vl, ldvl, vr, ldvr, work, lwork );
72 /* Release memory and exit */
73 LAPACKE_free( work );
74exit_level_0:
75 if( info == LAPACK_WORK_MEMORY_ERROR ) {
76 LAPACKE_xerbla( "LAPACKE_dgeev", info );
77 }
78 return info;
79}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
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 LAPACKE_free(p)
Definition: lapacke.h:46
#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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