LAPACK  3.8.0
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 36 of file lapacke_sgeev.c.

40 {
41  lapack_int info = 0;
42  lapack_int lwork = -1;
43  float* work = NULL;
44  float work_query;
45  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46  LAPACKE_xerbla( "LAPACKE_sgeev", -1 );
47  return -1;
48  }
49 #ifndef LAPACK_DISABLE_NAN_CHECK
50  if( LAPACKE_get_nancheck() ) {
51  /* Optionally check input matrices for NaNs */
52  if( LAPACKE_sge_nancheck( matrix_layout, n, n, a, lda ) ) {
53  return -5;
54  }
55  }
56 #endif
57  /* Query optimal working array(s) size */
58  info = LAPACKE_sgeev_work( matrix_layout, jobvl, jobvr, n, a, lda, wr, wi,
59  vl, ldvl, vr, ldvr, &work_query, lwork );
60  if( info != 0 ) {
61  goto exit_level_0;
62  }
63  lwork = (lapack_int)work_query;
64  /* Allocate memory for work arrays */
65  work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
66  if( work == NULL ) {
68  goto exit_level_0;
69  }
70  /* Call middle-level interface */
71  info = LAPACKE_sgeev_work( matrix_layout, jobvl, jobvr, n, a, lda, wr, wi,
72  vl, ldvl, vr, ldvr, work, lwork );
73  /* Release memory and exit */
74  LAPACKE_free( work );
75 exit_level_0:
76  if( info == LAPACK_WORK_MEMORY_ERROR ) {
77  LAPACKE_xerbla( "LAPACKE_sgeev", info );
78  }
79  return info;
80 }
#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_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *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
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()
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