LAPACK  3.8.0
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 36 of file lapacke_cggesx.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  float* rwork = NULL;
53  lapack_complex_float* work = NULL;
54  lapack_int iwork_query;
55  lapack_complex_float work_query;
56  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
57  LAPACKE_xerbla( "LAPACKE_cggesx", -1 );
58  return -1;
59  }
60 #ifndef LAPACK_DISABLE_NAN_CHECK
61  if( LAPACKE_get_nancheck() ) {
62  /* Optionally check input matrices for NaNs */
63  if( LAPACKE_cge_nancheck( matrix_layout, n, n, a, lda ) ) {
64  return -8;
65  }
66  if( LAPACKE_cge_nancheck( matrix_layout, n, n, b, ldb ) ) {
67  return -10;
68  }
69  }
70 #endif
71  /* Allocate memory for working array(s) */
72  if( LAPACKE_lsame( sort, 's' ) ) {
73  bwork = (lapack_logical*)
74  LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
75  if( bwork == NULL ) {
77  goto exit_level_0;
78  }
79  }
80  rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,8*n) );
81  if( rwork == NULL ) {
83  goto exit_level_1;
84  }
85  /* Query optimal working array(s) size */
86  info = LAPACKE_cggesx_work( matrix_layout, jobvsl, jobvsr, sort, selctg,
87  sense, n, a, lda, b, ldb, sdim, alpha, beta,
88  vsl, ldvsl, vsr, ldvsr, rconde, rcondv,
89  &work_query, lwork, rwork, &iwork_query, liwork,
90  bwork );
91  if( info != 0 ) {
92  goto exit_level_2;
93  }
94  liwork = (lapack_int)iwork_query;
95  lwork = LAPACK_C2INT( work_query );
96  /* Allocate memory for work arrays */
97  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
98  if( iwork == NULL ) {
100  goto exit_level_2;
101  }
102  work = (lapack_complex_float*)
103  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
104  if( work == NULL ) {
106  goto exit_level_3;
107  }
108  /* Call middle-level interface */
109  info = LAPACKE_cggesx_work( matrix_layout, jobvsl, jobvsr, sort, selctg,
110  sense, n, a, lda, b, ldb, sdim, alpha, beta,
111  vsl, ldvsl, vsr, ldvsr, rconde, rcondv, work,
112  lwork, rwork, iwork, liwork, bwork );
113  /* Release memory and exit */
114  LAPACKE_free( work );
115 exit_level_3:
116  LAPACKE_free( iwork );
117 exit_level_2:
118  LAPACKE_free( rwork );
119 exit_level_1:
120  if( LAPACKE_lsame( sort, 's' ) ) {
121  LAPACKE_free( bwork );
122  }
123 exit_level_0:
124  if( info == LAPACK_WORK_MEMORY_ERROR ) {
125  LAPACKE_xerbla( "LAPACKE_cggesx", info );
126  }
127  return info;
128 }
#define lapack_logical
Definition: lapacke.h:51
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: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
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
int LAPACKE_get_nancheck()
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