LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cggesx()

lapack_int LAPACKE_cggesx ( int  matrix_layout,
char  jobvsl,
char  jobvsr,
char  sort,
LAPACK_C_SELECT2  selctg,
char  sense,
lapack_int  n,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float b,
lapack_int  ldb,
lapack_int sdim,
lapack_complex_float alpha,
lapack_complex_float beta,
lapack_complex_float vsl,
lapack_int  ldvsl,
lapack_complex_float vsr,
lapack_int  ldvsr,
float *  rconde,
float *  rcondv 
)

Definition at line 35 of file lapacke_cggesx.c.

45 {
46  lapack_int info = 0;
47  lapack_int liwork = -1;
48  lapack_int lwork = -1;
49  lapack_logical* bwork = NULL;
50  lapack_int* iwork = NULL;
51  float* rwork = NULL;
52  lapack_complex_float* work = NULL;
53  lapack_int iwork_query;
54  lapack_complex_float work_query;
55  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
56  LAPACKE_xerbla( "LAPACKE_cggesx", -1 );
57  return -1;
58  }
59 #ifndef LAPACK_DISABLE_NAN_CHECK
60  if( LAPACKE_get_nancheck() ) {
61  /* Optionally check input matrices for NaNs */
62  if( LAPACKE_cge_nancheck( matrix_layout, n, n, a, lda ) ) {
63  return -8;
64  }
65  if( LAPACKE_cge_nancheck( matrix_layout, n, n, b, ldb ) ) {
66  return -10;
67  }
68  }
69 #endif
70  /* Allocate memory for working array(s) */
71  if( LAPACKE_lsame( sort, 's' ) ) {
72  bwork = (lapack_logical*)
73  LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
74  if( bwork == NULL ) {
76  goto exit_level_0;
77  }
78  }
79  rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,8*n) );
80  if( rwork == NULL ) {
82  goto exit_level_1;
83  }
84  /* Query optimal working array(s) size */
85  info = LAPACKE_cggesx_work( matrix_layout, jobvsl, jobvsr, sort, selctg,
86  sense, n, a, lda, b, ldb, sdim, alpha, beta,
87  vsl, ldvsl, vsr, ldvsr, rconde, rcondv,
88  &work_query, lwork, rwork, &iwork_query, liwork,
89  bwork );
90  if( info != 0 ) {
91  goto exit_level_2;
92  }
93  liwork = iwork_query;
94  lwork = LAPACK_C2INT( work_query );
95  /* Allocate memory for work arrays */
96  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
97  if( iwork == NULL ) {
99  goto exit_level_2;
100  }
101  work = (lapack_complex_float*)
102  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
103  if( work == NULL ) {
105  goto exit_level_3;
106  }
107  /* Call middle-level interface */
108  info = LAPACKE_cggesx_work( matrix_layout, jobvsl, jobvsr, sort, selctg,
109  sense, n, a, lda, b, ldb, sdim, alpha, beta,
110  vsl, ldvsl, vsr, ldvsr, rconde, rcondv, work,
111  lwork, rwork, iwork, liwork, bwork );
112  /* Release memory and exit */
113  LAPACKE_free( work );
114 exit_level_3:
115  LAPACKE_free( iwork );
116 exit_level_2:
117  LAPACKE_free( rwork );
118 exit_level_1:
119  if( LAPACKE_lsame( sort, 's' ) ) {
120  LAPACKE_free( bwork );
121  }
122 exit_level_0:
123  if( info == LAPACK_WORK_MEMORY_ERROR ) {
124  LAPACKE_xerbla( "LAPACKE_cggesx", info );
125  }
126  return info;
127 }
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_float
Definition: lapack.h:45
#define lapack_logical
Definition: lapack.h:87
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACK_C2INT(x)
Definition: lapacke.h:49
#define LAPACKE_free(p)
Definition: lapacke.h:46
lapack_int LAPACKE_cggesx_work(int matrix_layout, char jobvsl, char jobvsr, char sort, LAPACK_C_SELECT2 selctg, char sense, lapack_int n, lapack_complex_float *a, lapack_int lda, lapack_complex_float *b, lapack_int ldb, lapack_int *sdim, lapack_complex_float *alpha, lapack_complex_float *beta, lapack_complex_float *vsl, lapack_int ldvsl, lapack_complex_float *vsr, lapack_int ldvsr, float *rconde, float *rcondv, lapack_complex_float *work, lapack_int lwork, float *rwork, lapack_int *iwork, lapack_int liwork, lapack_logical *bwork)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
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