LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgges()

lapack_int LAPACKE_zgges ( int  matrix_layout,
char  jobvsl,
char  jobvsr,
char  sort,
LAPACK_Z_SELECT2  selctg,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
lapack_complex_double b,
lapack_int  ldb,
lapack_int sdim,
lapack_complex_double alpha,
lapack_complex_double beta,
lapack_complex_double vsl,
lapack_int  ldvsl,
lapack_complex_double vsr,
lapack_int  ldvsr 
)

Definition at line 36 of file lapacke_zgges.c.

44 {
45  lapack_int info = 0;
46  lapack_int lwork = -1;
47  lapack_logical* bwork = NULL;
48  double* rwork = NULL;
49  lapack_complex_double* work = NULL;
50  lapack_complex_double work_query;
51  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
52  LAPACKE_xerbla( "LAPACKE_zgges", -1 );
53  return -1;
54  }
55 #ifndef LAPACK_DISABLE_NAN_CHECK
56  if( LAPACKE_get_nancheck() ) {
57  /* Optionally check input matrices for NaNs */
58  if( LAPACKE_zge_nancheck( matrix_layout, n, n, a, lda ) ) {
59  return -7;
60  }
61  if( LAPACKE_zge_nancheck( matrix_layout, n, n, b, ldb ) ) {
62  return -9;
63  }
64  }
65 #endif
66  /* Allocate memory for working array(s) */
67  if( LAPACKE_lsame( sort, 's' ) ) {
68  bwork = (lapack_logical*)
69  LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
70  if( bwork == NULL ) {
72  goto exit_level_0;
73  }
74  }
75  rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,8*n) );
76  if( rwork == NULL ) {
78  goto exit_level_1;
79  }
80  /* Query optimal working array(s) size */
81  info = LAPACKE_zgges_work( matrix_layout, jobvsl, jobvsr, sort, selctg, n, a,
82  lda, b, ldb, sdim, alpha, beta, vsl, ldvsl, vsr,
83  ldvsr, &work_query, lwork, rwork, bwork );
84  if( info != 0 ) {
85  goto exit_level_2;
86  }
87  lwork = LAPACK_Z2INT( work_query );
88  /* Allocate memory for work arrays */
89  work = (lapack_complex_double*)
90  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
91  if( work == NULL ) {
93  goto exit_level_2;
94  }
95  /* Call middle-level interface */
96  info = LAPACKE_zgges_work( matrix_layout, jobvsl, jobvsr, sort, selctg, n, a,
97  lda, b, ldb, sdim, alpha, beta, vsl, ldvsl, vsr,
98  ldvsr, work, lwork, rwork, bwork );
99  /* Release memory and exit */
100  LAPACKE_free( work );
101 exit_level_2:
102  LAPACKE_free( rwork );
103 exit_level_1:
104  if( LAPACKE_lsame( sort, 's' ) ) {
105  LAPACKE_free( bwork );
106  }
107 exit_level_0:
108  if( info == LAPACK_WORK_MEMORY_ERROR ) {
109  LAPACKE_xerbla( "LAPACKE_zgges", info );
110  }
111  return info;
112 }
#define lapack_logical
Definition: lapacke.h:51
#define LAPACK_Z2INT(x)
Definition: lapacke.h:117
#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_double
Definition: lapacke.h:90
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#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_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
lapack_int LAPACKE_zgges_work(int matrix_layout, char jobvsl, char jobvsr, char sort, LAPACK_Z_SELECT2 selctg, lapack_int n, lapack_complex_double *a, lapack_int lda, lapack_complex_double *b, lapack_int ldb, lapack_int *sdim, lapack_complex_double *alpha, lapack_complex_double *beta, lapack_complex_double *vsl, lapack_int ldvsl, lapack_complex_double *vsr, lapack_int ldvsr, lapack_complex_double *work, lapack_int lwork, double *rwork, lapack_logical *bwork)
int LAPACKE_get_nancheck()
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