LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cggev3()

lapack_int LAPACKE_cggev3 ( 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_cggev3.c.

44 {
45  lapack_int info = 0;
46  lapack_int lwork = -1;
47  float* rwork = NULL;
48  lapack_complex_float* work = NULL;
49  lapack_complex_float work_query;
50  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
51  LAPACKE_xerbla( "LAPACKE_cggev3", -1 );
52  return -1;
53  }
54 #ifndef LAPACK_DISABLE_NAN_CHECK
55  if( LAPACKE_get_nancheck() ) {
56  /* Optionally check input matrices for NaNs */
57  if( LAPACKE_cge_nancheck( matrix_layout, n, n, a, lda ) ) {
58  return -5;
59  }
60  if( LAPACKE_cge_nancheck( matrix_layout, n, n, b, ldb ) ) {
61  return -7;
62  }
63  }
64 #endif
65  /* Allocate memory for working array(s) */
66  rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,8*n) );
67  if( rwork == NULL ) {
69  goto exit_level_0;
70  }
71  /* Query optimal working array(s) size */
72  info = LAPACKE_cggev3_work( matrix_layout, jobvl, jobvr, n, a, lda, b, ldb,
73  alpha, beta, vl, ldvl, vr, ldvr, &work_query,
74  lwork, rwork );
75  if( info != 0 ) {
76  goto exit_level_1;
77  }
78  lwork = LAPACK_C2INT( work_query );
79  /* Allocate memory for work arrays */
80  work = (lapack_complex_float*)
81  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
82  if( work == NULL ) {
84  goto exit_level_1;
85  }
86  /* Call middle-level interface */
87  info = LAPACKE_cggev3_work( matrix_layout, jobvl, jobvr, n, a, lda, b, ldb,
88  alpha, beta, vl, ldvl, vr, ldvr, work, lwork,
89  rwork );
90  /* Release memory and exit */
91  LAPACKE_free( work );
92 exit_level_1:
93  LAPACKE_free( rwork );
94 exit_level_0:
95  if( info == LAPACK_WORK_MEMORY_ERROR ) {
96  LAPACKE_xerbla( "LAPACKE_cggev3", info );
97  }
98  return info;
99 }
#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
lapack_int LAPACKE_cggev3_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)
int LAPACKE_get_nancheck()
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