LAPACK  3.10.0
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 35 of file lapacke_sgghd3.c.

39 {
40  lapack_int info = 0;
41  lapack_int lwork = -1;
42  float* work = NULL;
43  float work_query;
44  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45  LAPACKE_xerbla( "LAPACKE_sgghd3", -1 );
46  return -1;
47  }
48 #ifndef LAPACK_DISABLE_NAN_CHECK
49  if( LAPACKE_get_nancheck() ) {
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  }
68 #endif
69  /* Query optimal working array(s) size */
70  info = LAPACKE_sgghd3_work( matrix_layout, compq, compz, n, ilo, ihi,
71  a, lda, b, ldb, q, ldq, z, ldz, &work_query,
72  lwork );
73  if( info != 0 ) {
74  goto exit_level_0;
75  }
76  lwork = (lapack_int)work_query;
77  /* Allocate memory for work arrays */
78  work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
79  if( work == NULL ) {
81  goto exit_level_0;
82  }
83  /* Call middle-level interface */
84  info = LAPACKE_sgghd3_work( matrix_layout, compq, compz, n, ilo, ihi,
85  a, lda, b, ldb, q, ldq, z, ldz, work, lwork );
86  /* Release memory and exit */
87  LAPACKE_free( work );
88 exit_level_0:
89  if( info == LAPACK_WORK_MEMORY_ERROR ) {
90  LAPACKE_xerbla( "LAPACKE_sgghd3", info );
91  }
92  return info;
93 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
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)
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
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