LAPACK  3.7.1
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  /* Optionally check input matrices for NaNs */
53  if( LAPACKE_cge_nancheck( matrix_layout, n, n, a, lda ) ) {
54  return -5;
55  }
56 #endif
57  /* Allocate memory for working array(s) */
58  rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,2*n) );
59  if( rwork == NULL ) {
61  goto exit_level_0;
62  }
63  /* Query optimal working array(s) size */
64  info = LAPACKE_cgeev_work( matrix_layout, jobvl, jobvr, n, a, lda, w, vl,
65  ldvl, vr, ldvr, &work_query, lwork, rwork );
66  if( info != 0 ) {
67  goto exit_level_1;
68  }
69  lwork = LAPACK_C2INT( work_query );
70  /* Allocate memory for work arrays */
71  work = (lapack_complex_float*)
72  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
73  if( work == NULL ) {
75  goto exit_level_1;
76  }
77  /* Call middle-level interface */
78  info = LAPACKE_cgeev_work( matrix_layout, jobvl, jobvr, n, a, lda, w, vl,
79  ldvl, vr, ldvr, work, lwork, rwork );
80  /* Release memory and exit */
81  LAPACKE_free( work );
82 exit_level_1:
83  LAPACKE_free( rwork );
84 exit_level_0:
85  if( info == LAPACK_WORK_MEMORY_ERROR ) {
86  LAPACKE_xerbla( "LAPACKE_cgeev", info );
87  }
88  return info;
89 }
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 LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_float
Definition: lapacke.h:74
lapack_logical LAPACKE_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_C2INT(x)
Definition: lapacke.h:116
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
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