LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sspgvd()

lapack_int LAPACKE_sspgvd ( int  matrix_layout,
lapack_int  itype,
char  jobz,
char  uplo,
lapack_int  n,
float *  ap,
float *  bp,
float *  w,
float *  z,
lapack_int  ldz 
)

Definition at line 36 of file lapacke_sspgvd.c.

39 {
40  lapack_int info = 0;
41  lapack_int liwork = -1;
42  lapack_int lwork = -1;
43  lapack_int* iwork = NULL;
44  float* work = NULL;
45  lapack_int iwork_query;
46  float work_query;
47  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48  LAPACKE_xerbla( "LAPACKE_sspgvd", -1 );
49  return -1;
50  }
51 #ifndef LAPACK_DISABLE_NAN_CHECK
52  if( LAPACKE_get_nancheck() ) {
53  /* Optionally check input matrices for NaNs */
54  if( LAPACKE_ssp_nancheck( n, ap ) ) {
55  return -6;
56  }
57  if( LAPACKE_ssp_nancheck( n, bp ) ) {
58  return -7;
59  }
60  }
61 #endif
62  /* Query optimal working array(s) size */
63  info = LAPACKE_sspgvd_work( matrix_layout, itype, jobz, uplo, n, ap, bp, w,
64  z, ldz, &work_query, lwork, &iwork_query,
65  liwork );
66  if( info != 0 ) {
67  goto exit_level_0;
68  }
69  liwork = (lapack_int)iwork_query;
70  lwork = (lapack_int)work_query;
71  /* Allocate memory for work arrays */
72  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
73  if( iwork == NULL ) {
75  goto exit_level_0;
76  }
77  work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
78  if( work == NULL ) {
80  goto exit_level_1;
81  }
82  /* Call middle-level interface */
83  info = LAPACKE_sspgvd_work( matrix_layout, itype, jobz, uplo, n, ap, bp, w,
84  z, ldz, work, lwork, iwork, liwork );
85  /* Release memory and exit */
86  LAPACKE_free( work );
87 exit_level_1:
88  LAPACKE_free( iwork );
89 exit_level_0:
90  if( info == LAPACK_WORK_MEMORY_ERROR ) {
91  LAPACKE_xerbla( "LAPACKE_sspgvd", info );
92  }
93  return info;
94 }
#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_sspgvd_work(int matrix_layout, lapack_int itype, char jobz, char uplo, lapack_int n, float *ap, float *bp, float *w, float *z, lapack_int ldz, float *work, lapack_int lwork, lapack_int *iwork, lapack_int liwork)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#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_ssp_nancheck(lapack_int n, const float *ap)
int LAPACKE_get_nancheck()
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