LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cgghd3()

lapack_int LAPACKE_cgghd3 ( int  matrix_layout,
char  compq,
char  compz,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float b,
lapack_int  ldb,
lapack_complex_float q,
lapack_int  ldq,
lapack_complex_float z,
lapack_int  ldz 
)

Definition at line 36 of file lapacke_cgghd3.c.

42 {
43  lapack_int info = 0;
44  lapack_int lwork = -1;
45  lapack_complex_float* work = NULL;
46  lapack_complex_float work_query;
47 
48  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49  LAPACKE_xerbla( "LAPACKE_cgghd3", -1 );
50  return -1;
51  }
52 #ifndef LAPACK_DISABLE_NAN_CHECK
53  /* Optionally check input matrices for NaNs */
54  if( LAPACKE_cge_nancheck( matrix_layout, n, n, a, lda ) ) {
55  return -7;
56  }
57  if( LAPACKE_cge_nancheck( matrix_layout, n, n, b, ldb ) ) {
58  return -9;
59  }
60  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
61  if( LAPACKE_cge_nancheck( matrix_layout, n, n, q, ldq ) ) {
62  return -11;
63  }
64  }
65  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
66  if( LAPACKE_cge_nancheck( matrix_layout, n, n, z, ldz ) ) {
67  return -13;
68  }
69  }
70 #endif
71  /* Query optimal working array(s) size */
72  info = LAPACKE_cgghd3_work( matrix_layout, compq, compz, n, ilo, ihi,
73  a, lda, b, ldb, q, ldq, z, ldz, &work_query,
74  lwork );
75  if( info != 0 ) {
76  goto exit_level_0;
77  }
78  lwork = LAPACK_C2INT( work_query );
79  /* Allocate memory for work arrays */
80  work = (lapack_complex_float*)
81  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
82  if( work == NULL ) {
84  goto exit_level_0;
85  }
86  /* Call middle-level interface */
87  info = LAPACKE_cgghd3_work( matrix_layout, compq, compz, n, ilo, ihi,
88  a, lda, b, ldb, q, ldq, z, ldz, work,
89  lwork );
90  /* Release memory and exit */
91  LAPACKE_free( work );
92 exit_level_0:
93  if( info == LAPACK_WORK_MEMORY_ERROR ) {
94  LAPACKE_xerbla( "LAPACKE_cgghd3", info );
95  }
96  return info;
97 }
#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 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)
lapack_int LAPACKE_cgghd3_work(int matrix_layout, char compq, char compz, lapack_int n, lapack_int ilo, lapack_int ihi, lapack_complex_float *a, lapack_int lda, lapack_complex_float *b, lapack_int ldb, lapack_complex_float *q, lapack_int ldq, lapack_complex_float *z, lapack_int ldz, lapack_complex_float *work, lapack_int lwork)
#define lapack_int
Definition: lapacke.h:47
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