LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgghd3()

lapack_int LAPACKE_sgghd3 ( int  matrix_layout,
char  compq,
char  compz,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
float *  a,
lapack_int  lda,
float *  b,
lapack_int  ldb,
float *  q,
lapack_int  ldq,
float *  z,
lapack_int  ldz 
)

Definition at line 36 of file lapacke_sgghd3.c.

40 {
41  lapack_int info = 0;
42  lapack_int lwork = -1;
43  float* work = NULL;
44  float work_query;
45  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46  LAPACKE_xerbla( "LAPACKE_sgghd3", -1 );
47  return -1;
48  }
49 #ifndef LAPACK_DISABLE_NAN_CHECK
50  /* Optionally check input matrices for NaNs */
51  if( LAPACKE_sge_nancheck( matrix_layout, n, n, a, lda ) ) {
52  return -7;
53  }
54  if( LAPACKE_sge_nancheck( matrix_layout, n, n, b, ldb ) ) {
55  return -9;
56  }
57  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
58  if( LAPACKE_sge_nancheck( matrix_layout, n, n, q, ldq ) ) {
59  return -11;
60  }
61  }
62  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
63  if( LAPACKE_sge_nancheck( matrix_layout, n, n, z, ldz ) ) {
64  return -13;
65  }
66  }
67 #endif
68  /* Query optimal working array(s) size */
69  info = LAPACKE_sgghd3_work( matrix_layout, compq, compz, n, ilo, ihi,
70  a, lda, b, ldb, q, ldq, z, ldz, &work_query,
71  lwork );
72  if( info != 0 ) {
73  goto exit_level_0;
74  }
75  lwork = (lapack_int)work_query;
76  /* Allocate memory for work arrays */
77  work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
78  if( work == NULL ) {
80  goto exit_level_0;
81  }
82  /* Call middle-level interface */
83  info = LAPACKE_sgghd3_work( matrix_layout, compq, compz, n, ilo, ihi,
84  a, lda, b, ldb, q, ldq, z, ldz, work, lwork );
85  /* Release memory and exit */
86  LAPACKE_free( work );
87 exit_level_0:
88  if( info == LAPACK_WORK_MEMORY_ERROR ) {
89  LAPACKE_xerbla( "LAPACKE_sgghd3", info );
90  }
91  return info;
92 }
#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
lapack_int LAPACKE_sgghd3_work(int matrix_layout, char compq, char compz, lapack_int n, lapack_int ilo, lapack_int ihi, float *a, lapack_int lda, float *b, lapack_int ldb, float *q, lapack_int ldq, float *z, lapack_int ldz, float *work, lapack_int lwork)
lapack_logical LAPACKE_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
#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
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