LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgghd3()

lapack_int LAPACKE_zgghd3 ( int  matrix_layout,
char  compq,
char  compz,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
lapack_complex_double a,
lapack_int  lda,
lapack_complex_double b,
lapack_int  ldb,
lapack_complex_double q,
lapack_int  ldq,
lapack_complex_double z,
lapack_int  ldz 
)

Definition at line 36 of file lapacke_zgghd3.c.

42 {
43  lapack_int info = 0;
44  lapack_int lwork = -1;
45  lapack_complex_double* work = NULL;
46  lapack_complex_double work_query;
47 
48  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49  LAPACKE_xerbla( "LAPACKE_zgghd3", -1 );
50  return -1;
51  }
52 #ifndef LAPACK_DISABLE_NAN_CHECK
53  if( LAPACKE_get_nancheck() ) {
54  /* Optionally check input matrices for NaNs */
55  if( LAPACKE_zge_nancheck( matrix_layout, n, n, a, lda ) ) {
56  return -7;
57  }
58  if( LAPACKE_zge_nancheck( matrix_layout, n, n, b, ldb ) ) {
59  return -9;
60  }
61  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
62  if( LAPACKE_zge_nancheck( matrix_layout, n, n, q, ldq ) ) {
63  return -11;
64  }
65  }
66  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
67  if( LAPACKE_zge_nancheck( matrix_layout, n, n, z, ldz ) ) {
68  return -13;
69  }
70  }
71  }
72 #endif
73  /* Query optimal working array(s) size */
74  info = LAPACKE_zgghd3_work( matrix_layout, compq, compz, n, ilo, ihi,
75  a, lda, b, ldb, q, ldq, z, ldz, &work_query,
76  lwork );
77  if( info != 0 ) {
78  goto exit_level_0;
79  }
80  lwork = LAPACK_Z2INT( work_query );
81  /* Allocate memory for work arrays */
82  work = (lapack_complex_double*)
83  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
84  if( work == NULL ) {
86  goto exit_level_0;
87  }
88  /* Call middle-level interface */
89  info = LAPACKE_zgghd3_work( matrix_layout, compq, compz, n, ilo, ihi,
90  a, lda, b, ldb, q, ldq, z, ldz, work,
91  lwork );
92  /* Release memory and exit */
93  LAPACKE_free( work );
94 exit_level_0:
95  if( info == LAPACK_WORK_MEMORY_ERROR ) {
96  LAPACKE_xerbla( "LAPACKE_zgghd3", info );
97  }
98  return info;
99 }
#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
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
lapack_int LAPACKE_zgghd3_work(int matrix_layout, char compq, char compz, lapack_int n, lapack_int ilo, lapack_int ihi, lapack_complex_double *a, lapack_int lda, lapack_complex_double *b, lapack_int ldb, lapack_complex_double *q, lapack_int ldq, lapack_complex_double *z, lapack_int ldz, lapack_complex_double *work, lapack_int lwork)
#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)
int LAPACKE_get_nancheck()
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