LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ctgsna()

lapack_int LAPACKE_ctgsna ( int  matrix_layout,
char  job,
char  howmny,
const lapack_logical select,
lapack_int  n,
const lapack_complex_float a,
lapack_int  lda,
const lapack_complex_float b,
lapack_int  ldb,
const lapack_complex_float vl,
lapack_int  ldvl,
const lapack_complex_float vr,
lapack_int  ldvr,
float *  s,
float *  dif,
lapack_int  mm,
lapack_int m 
)

Definition at line 36 of file lapacke_ctgsna.c.

43 {
44  lapack_int info = 0;
45  lapack_int lwork = -1;
46  lapack_int* iwork = NULL;
47  lapack_complex_float* work = NULL;
48  lapack_complex_float work_query;
49  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
50  LAPACKE_xerbla( "LAPACKE_ctgsna", -1 );
51  return -1;
52  }
53 #ifndef LAPACK_DISABLE_NAN_CHECK
54  if( LAPACKE_get_nancheck() ) {
55  /* Optionally check input matrices for NaNs */
56  if( LAPACKE_cge_nancheck( matrix_layout, n, n, a, lda ) ) {
57  return -6;
58  }
59  if( LAPACKE_cge_nancheck( matrix_layout, n, n, b, ldb ) ) {
60  return -8;
61  }
62  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
63  if( LAPACKE_cge_nancheck( matrix_layout, n, mm, vl, ldvl ) ) {
64  return -10;
65  }
66  }
67  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
68  if( LAPACKE_cge_nancheck( matrix_layout, n, mm, vr, ldvr ) ) {
69  return -12;
70  }
71  }
72  }
73 #endif
74  /* Allocate memory for working array(s) */
75  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
76  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n+2) );
77  if( iwork == NULL ) {
79  goto exit_level_0;
80  }
81  }
82  /* Query optimal working array(s) size */
83  info = LAPACKE_ctgsna_work( matrix_layout, job, howmny, select, n, a, lda, b,
84  ldb, vl, ldvl, vr, ldvr, s, dif, mm, m,
85  &work_query, lwork, iwork );
86  if( info != 0 ) {
87  goto exit_level_1;
88  }
89  lwork = LAPACK_C2INT( work_query );
90  /* Allocate memory for work arrays */
91  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
92  work = (lapack_complex_float*)
93  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
94  if( work == NULL ) {
96  goto exit_level_1;
97  }
98  }
99  /* Call middle-level interface */
100  info = LAPACKE_ctgsna_work( matrix_layout, job, howmny, select, n, a, lda, b,
101  ldb, vl, ldvl, vr, ldvr, s, dif, mm, m, work,
102  lwork, iwork );
103  /* Release memory and exit */
104  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
105  LAPACKE_free( work );
106  }
107 exit_level_1:
108  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
109  LAPACKE_free( iwork );
110  }
111 exit_level_0:
112  if( info == LAPACK_WORK_MEMORY_ERROR ) {
113  LAPACKE_xerbla( "LAPACKE_ctgsna", info );
114  }
115  return info;
116 }
#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_int LAPACKE_ctgsna_work(int matrix_layout, char job, char howmny, const lapack_logical *select, lapack_int n, const lapack_complex_float *a, lapack_int lda, const lapack_complex_float *b, lapack_int ldb, const lapack_complex_float *vl, lapack_int ldvl, const lapack_complex_float *vr, lapack_int ldvr, float *s, float *dif, lapack_int mm, lapack_int *m, lapack_complex_float *work, lapack_int lwork, lapack_int *iwork)
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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