LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cgeev()

lapack_int LAPACKE_cgeev ( int  matrix_layout,
char  jobvl,
char  jobvr,
lapack_int  n,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float w,
lapack_complex_float vl,
lapack_int  ldvl,
lapack_complex_float vr,
lapack_int  ldvr 
)

Definition at line 36 of file lapacke_cgeev.c.

41 {
42  lapack_int info = 0;
43  lapack_int lwork = -1;
44  float* rwork = NULL;
45  lapack_complex_float* work = NULL;
46  lapack_complex_float work_query;
47  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48  LAPACKE_xerbla( "LAPACKE_cgeev", -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_cge_nancheck( matrix_layout, n, n, a, lda ) ) {
55  return -5;
56  }
57  }
58 #endif
59  /* Allocate memory for working array(s) */
60  rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,2*n) );
61  if( rwork == NULL ) {
63  goto exit_level_0;
64  }
65  /* Query optimal working array(s) size */
66  info = LAPACKE_cgeev_work( matrix_layout, jobvl, jobvr, n, a, lda, w, vl,
67  ldvl, vr, ldvr, &work_query, lwork, rwork );
68  if( info != 0 ) {
69  goto exit_level_1;
70  }
71  lwork = LAPACK_C2INT( work_query );
72  /* Allocate memory for work arrays */
73  work = (lapack_complex_float*)
74  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
75  if( work == NULL ) {
77  goto exit_level_1;
78  }
79  /* Call middle-level interface */
80  info = LAPACKE_cgeev_work( matrix_layout, jobvl, jobvr, n, a, lda, w, vl,
81  ldvl, vr, ldvr, work, lwork, rwork );
82  /* Release memory and exit */
83  LAPACKE_free( work );
84 exit_level_1:
85  LAPACKE_free( rwork );
86 exit_level_0:
87  if( info == LAPACK_WORK_MEMORY_ERROR ) {
88  LAPACKE_xerbla( "LAPACKE_cgeev", info );
89  }
90  return info;
91 }
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
lapack_logical LAPACKE_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define lapack_complex_float
Definition: lapacke.h:74
int LAPACKE_get_nancheck()
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
lapack_int LAPACKE_cgeev_work(int matrix_layout, char jobvl, char jobvr, lapack_int n, lapack_complex_float *a, lapack_int lda, lapack_complex_float *w, lapack_complex_float *vl, lapack_int ldvl, lapack_complex_float *vr, lapack_int ldvr, lapack_complex_float *work, lapack_int lwork, float *rwork)
#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)
#define LAPACK_C2INT(x)
Definition: lapacke.h:116
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