LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ctgsen()

lapack_int LAPACKE_ctgsen ( int  matrix_layout,
lapack_int  ijob,
lapack_logical  wantq,
lapack_logical  wantz,
const lapack_logical select,
lapack_int  n,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float b,
lapack_int  ldb,
lapack_complex_float alpha,
lapack_complex_float beta,
lapack_complex_float q,
lapack_int  ldq,
lapack_complex_float z,
lapack_int  ldz,
lapack_int m,
float *  pl,
float *  pr,
float *  dif 
)

Definition at line 36 of file lapacke_ctgsen.c.

46 {
47  lapack_int info = 0;
48  lapack_int liwork = -1;
49  lapack_int lwork = -1;
50  lapack_int* iwork = NULL;
51  lapack_complex_float* work = NULL;
52  lapack_int iwork_query;
53  lapack_complex_float work_query;
54  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
55  LAPACKE_xerbla( "LAPACKE_ctgsen", -1 );
56  return -1;
57  }
58 #ifndef LAPACK_DISABLE_NAN_CHECK
59  if( LAPACKE_get_nancheck() ) {
60  /* Optionally check input matrices for NaNs */
61  if( LAPACKE_cge_nancheck( matrix_layout, n, n, a, lda ) ) {
62  return -7;
63  }
64  if( LAPACKE_cge_nancheck( matrix_layout, n, n, b, ldb ) ) {
65  return -9;
66  }
67  if( wantq ) {
68  if( LAPACKE_cge_nancheck( matrix_layout, n, n, q, ldq ) ) {
69  return -13;
70  }
71  }
72  if( wantz ) {
73  if( LAPACKE_cge_nancheck( matrix_layout, n, n, z, ldz ) ) {
74  return -15;
75  }
76  }
77  }
78 #endif
79  /* Query optimal working array(s) size */
80  info = LAPACKE_ctgsen_work( matrix_layout, ijob, wantq, wantz, select, n, a,
81  lda, b, ldb, alpha, beta, q, ldq, z, ldz, m, pl,
82  pr, dif, &work_query, lwork, &iwork_query,
83  liwork );
84  if( info != 0 ) {
85  goto exit_level_0;
86  }
87  liwork = (lapack_int)iwork_query;
88  lwork = LAPACK_C2INT( work_query );
89  /* Allocate memory for work arrays */
90  if( ijob != 0 ) {
91  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
92  if( iwork == NULL ) {
94  goto exit_level_0;
95  }
96  }
97  work = (lapack_complex_float*)
98  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
99  if( work == NULL ) {
101  goto exit_level_1;
102  }
103  /* Call middle-level interface */
104  info = LAPACKE_ctgsen_work( matrix_layout, ijob, wantq, wantz, select, n, a,
105  lda, b, ldb, alpha, beta, q, ldq, z, ldz, m, pl,
106  pr, dif, work, lwork, iwork, liwork );
107  /* Release memory and exit */
108  LAPACKE_free( work );
109 exit_level_1:
110  if( ijob != 0 ) {
111  LAPACKE_free( iwork );
112  }
113 exit_level_0:
114  if( info == LAPACK_WORK_MEMORY_ERROR ) {
115  LAPACKE_xerbla( "LAPACKE_ctgsen", info );
116  }
117  return info;
118 }
#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)
lapack_int LAPACKE_ctgsen_work(int matrix_layout, lapack_int ijob, lapack_logical wantq, lapack_logical wantz, const lapack_logical *select, lapack_int n, lapack_complex_float *a, lapack_int lda, lapack_complex_float *b, lapack_int ldb, lapack_complex_float *alpha, lapack_complex_float *beta, lapack_complex_float *q, lapack_int ldq, lapack_complex_float *z, lapack_int ldz, lapack_int *m, float *pl, float *pr, float *dif, lapack_complex_float *work, lapack_int lwork, lapack_int *iwork, lapack_int liwork)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_C2INT(x)
Definition: lapacke.h:116
#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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