LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zhseqr()

lapack_int LAPACKE_zhseqr ( int  matrix_layout,
char  job,
char  compz,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
lapack_complex_double h,
lapack_int  ldh,
lapack_complex_double w,
lapack_complex_double z,
lapack_int  ldz 
)

Definition at line 36 of file lapacke_zhseqr.c.

41 {
42  lapack_int info = 0;
43  lapack_int lwork = -1;
44  lapack_complex_double* work = NULL;
45  lapack_complex_double work_query;
46  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47  LAPACKE_xerbla( "LAPACKE_zhseqr", -1 );
48  return -1;
49  }
50 #ifndef LAPACK_DISABLE_NAN_CHECK
51  if( LAPACKE_get_nancheck() ) {
52  /* Optionally check input matrices for NaNs */
53  if( LAPACKE_zge_nancheck( matrix_layout, n, n, h, ldh ) ) {
54  return -7;
55  }
56  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
57  if( LAPACKE_zge_nancheck( matrix_layout, n, n, z, ldz ) ) {
58  return -10;
59  }
60  }
61  }
62 #endif
63  /* Query optimal working array(s) size */
64  info = LAPACKE_zhseqr_work( matrix_layout, job, compz, n, ilo, ihi, h, ldh,
65  w, z, ldz, &work_query, lwork );
66  if( info != 0 ) {
67  goto exit_level_0;
68  }
69  lwork = LAPACK_Z2INT( work_query );
70  /* Allocate memory for work arrays */
71  work = (lapack_complex_double*)
72  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
73  if( work == NULL ) {
75  goto exit_level_0;
76  }
77  /* Call middle-level interface */
78  info = LAPACKE_zhseqr_work( matrix_layout, job, compz, n, ilo, ihi, h, ldh,
79  w, z, ldz, work, lwork );
80  /* Release memory and exit */
81  LAPACKE_free( work );
82 exit_level_0:
83  if( info == LAPACK_WORK_MEMORY_ERROR ) {
84  LAPACKE_xerbla( "LAPACKE_zhseqr", info );
85  }
86  return info;
87 }
#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
lapack_int LAPACKE_zhseqr_work(int matrix_layout, char job, char compz, lapack_int n, lapack_int ilo, lapack_int ihi, lapack_complex_double *h, lapack_int ldh, lapack_complex_double *w, lapack_complex_double *z, lapack_int ldz, lapack_complex_double *work, lapack_int lwork)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
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
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()
Here is the call graph for this function: