LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zggesx()

lapack_int LAPACKE_zggesx ( int  matrix_layout,
char  jobvsl,
char  jobvsr,
char  sort,
LAPACK_Z_SELECT2  selctg,
char  sense,
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,
double *  rconde,
double *  rcondv 
)

Definition at line 36 of file lapacke_zggesx.c.

46 {
47  lapack_int info = 0;
48  lapack_int liwork = -1;
49  lapack_int lwork = -1;
50  lapack_logical* bwork = NULL;
51  lapack_int* iwork = NULL;
52  double* rwork = NULL;
53  lapack_complex_double* work = NULL;
54  lapack_int iwork_query;
55  lapack_complex_double work_query;
56  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
57  LAPACKE_xerbla( "LAPACKE_zggesx", -1 );
58  return -1;
59  }
60 #ifndef LAPACK_DISABLE_NAN_CHECK
61  /* Optionally check input matrices for NaNs */
62  if( LAPACKE_zge_nancheck( matrix_layout, n, n, a, lda ) ) {
63  return -8;
64  }
65  if( LAPACKE_zge_nancheck( matrix_layout, n, n, b, ldb ) ) {
66  return -10;
67  }
68 #endif
69  /* Allocate memory for working array(s) */
70  if( LAPACKE_lsame( sort, 's' ) ) {
71  bwork = (lapack_logical*)
72  LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
73  if( bwork == NULL ) {
75  goto exit_level_0;
76  }
77  }
78  rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,8*n) );
79  if( rwork == NULL ) {
81  goto exit_level_1;
82  }
83  /* Query optimal working array(s) size */
84  info = LAPACKE_zggesx_work( matrix_layout, jobvsl, jobvsr, sort, selctg,
85  sense, n, a, lda, b, ldb, sdim, alpha, beta,
86  vsl, ldvsl, vsr, ldvsr, rconde, rcondv,
87  &work_query, lwork, rwork, &iwork_query, liwork,
88  bwork );
89  if( info != 0 ) {
90  goto exit_level_2;
91  }
92  liwork = (lapack_int)iwork_query;
93  lwork = LAPACK_Z2INT( work_query );
94  /* Allocate memory for work arrays */
95  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
96  if( iwork == NULL ) {
98  goto exit_level_2;
99  }
100  work = (lapack_complex_double*)
101  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
102  if( work == NULL ) {
104  goto exit_level_3;
105  }
106  /* Call middle-level interface */
107  info = LAPACKE_zggesx_work( matrix_layout, jobvsl, jobvsr, sort, selctg,
108  sense, n, a, lda, b, ldb, sdim, alpha, beta,
109  vsl, ldvsl, vsr, ldvsr, rconde, rcondv, work,
110  lwork, rwork, iwork, liwork, bwork );
111  /* Release memory and exit */
112  LAPACKE_free( work );
113 exit_level_3:
114  LAPACKE_free( iwork );
115 exit_level_2:
116  LAPACKE_free( rwork );
117 exit_level_1:
118  if( LAPACKE_lsame( sort, 's' ) ) {
119  LAPACKE_free( bwork );
120  }
121 exit_level_0:
122  if( info == LAPACK_WORK_MEMORY_ERROR ) {
123  LAPACKE_xerbla( "LAPACKE_zggesx", info );
124  }
125  return info;
126 }
#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
lapack_int LAPACKE_zggesx_work(int matrix_layout, char jobvsl, char jobvsr, char sort, LAPACK_Z_SELECT2 selctg, char sense, 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, double *rconde, double *rcondv, lapack_complex_double *work, lapack_int lwork, double *rwork, lapack_int *iwork, lapack_int liwork, lapack_logical *bwork)
#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)
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