LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgeev()

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

Definition at line 35 of file lapacke_sgeev.c.

39 {
40  lapack_int info = 0;
41  lapack_int lwork = -1;
42  float* work = NULL;
43  float work_query;
44  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45  LAPACKE_xerbla( "LAPACKE_sgeev", -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_sge_nancheck( matrix_layout, n, n, a, lda ) ) {
52  return -5;
53  }
54  }
55 #endif
56  /* Query optimal working array(s) size */
57  info = LAPACKE_sgeev_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 = (float*)LAPACKE_malloc( sizeof(float) * lwork );
65  if( work == NULL ) {
67  goto exit_level_0;
68  }
69  /* Call middle-level interface */
70  info = LAPACKE_sgeev_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 );
74 exit_level_0:
75  if( info == LAPACK_WORK_MEMORY_ERROR ) {
76  LAPACKE_xerbla( "LAPACKE_sgeev", info );
77  }
78  return info;
79 }
#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
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
lapack_int LAPACKE_sgeev_work(int matrix_layout, char jobvl, char jobvr, lapack_int n, float *a, lapack_int lda, float *wr, float *wi, float *vl, lapack_int ldvl, float *vr, lapack_int ldvr, float *work, lapack_int lwork)
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_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
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