LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cggev()

lapack_int LAPACKE_cggev ( int  matrix_layout,
char  jobvl,
char  jobvr,
lapack_int  n,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float b,
lapack_int  ldb,
lapack_complex_float alpha,
lapack_complex_float beta,
lapack_complex_float vl,
lapack_int  ldvl,
lapack_complex_float vr,
lapack_int  ldvr 
)

Definition at line 36 of file lapacke_cggev.c.

43 {
44  lapack_int info = 0;
45  lapack_int lwork = -1;
46  float* rwork = NULL;
47  lapack_complex_float* work = NULL;
48  lapack_complex_float work_query;
49  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
50  LAPACKE_xerbla( "LAPACKE_cggev", -1 );
51  return -1;
52  }
53 #ifndef LAPACK_DISABLE_NAN_CHECK
54  /* Optionally check input matrices for NaNs */
55  if( LAPACKE_cge_nancheck( matrix_layout, n, n, a, lda ) ) {
56  return -5;
57  }
58  if( LAPACKE_cge_nancheck( matrix_layout, n, n, b, ldb ) ) {
59  return -7;
60  }
61 #endif
62  /* Allocate memory for working array(s) */
63  rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,8*n) );
64  if( rwork == NULL ) {
66  goto exit_level_0;
67  }
68  /* Query optimal working array(s) size */
69  info = LAPACKE_cggev_work( matrix_layout, jobvl, jobvr, n, a, lda, b, ldb,
70  alpha, beta, vl, ldvl, vr, ldvr, &work_query,
71  lwork, rwork );
72  if( info != 0 ) {
73  goto exit_level_1;
74  }
75  lwork = LAPACK_C2INT( work_query );
76  /* Allocate memory for work arrays */
77  work = (lapack_complex_float*)
78  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
79  if( work == NULL ) {
81  goto exit_level_1;
82  }
83  /* Call middle-level interface */
84  info = LAPACKE_cggev_work( matrix_layout, jobvl, jobvr, n, a, lda, b, ldb,
85  alpha, beta, vl, ldvl, vr, ldvr, work, lwork,
86  rwork );
87  /* Release memory and exit */
88  LAPACKE_free( work );
89 exit_level_1:
90  LAPACKE_free( rwork );
91 exit_level_0:
92  if( info == LAPACK_WORK_MEMORY_ERROR ) {
93  LAPACKE_xerbla( "LAPACKE_cggev", info );
94  }
95  return info;
96 }
#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_int LAPACKE_cggev_work(int matrix_layout, char jobvl, char jobvr, lapack_int n, lapack_complex_float *a, lapack_int lda, lapack_complex_float *b, lapack_int ldb, lapack_complex_float *alpha, lapack_complex_float *beta, lapack_complex_float *vl, lapack_int ldvl, lapack_complex_float *vr, lapack_int ldvr, lapack_complex_float *work, lapack_int lwork, float *rwork)
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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