LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dsysv_aa_2stage()

lapack_int LAPACKE_dsysv_aa_2stage ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
double *  a,
lapack_int  lda,
double *  tb,
lapack_int  ltb,
lapack_int ipiv,
lapack_int ipiv2,
double *  b,
lapack_int  ldb 
)

Definition at line 36 of file lapacke_dsysv_aa_2stage.c.

40 {
41  lapack_int info = 0;
42  lapack_int lwork = -1;
43  double* work = NULL;
44  double work_query;
45  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46  LAPACKE_xerbla( "LAPACKE_dsysv_aa_2stage", -1 );
47  return -1;
48  }
49 #ifndef LAPACK_DISABLE_NAN_CHECK
50  if( LAPACKE_get_nancheck() ) {
51  /* Optionally check input matrices for NaNs */
52  if( LAPACKE_dsy_nancheck( matrix_layout, uplo, n, a, lda ) ) {
53  return -5;
54  }
55  if( LAPACKE_dge_nancheck( matrix_layout, 4*n, 1, tb, ltb ) ) {
56  return -7;
57  }
58  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
59  return -11;
60  }
61  }
62 #endif
63  /* Query optimal working array(s) size */
64  info = LAPACKE_dsysv_aa_2stage_work( matrix_layout, uplo, n, nrhs,
65  a, lda, tb, ltb, ipiv, ipiv2, b,
66  ldb, &work_query, lwork );
67  if( info != 0 ) {
68  goto exit_level_0;
69  }
70  lwork = (lapack_int)work_query;
71  /* Allocate memory for work arrays */
72  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
73  if( work == NULL ) {
75  goto exit_level_0;
76  }
77  /* Call middle-level interface */
78  info = LAPACKE_dsysv_aa_2stage_work( matrix_layout, uplo, n, nrhs,
79  a, lda, tb, ltb, ipiv, ipiv2, b,
80  ldb, work, lwork );
81  /* Release memory and exit */
82  LAPACKE_free( work );
83 exit_level_0:
84  if( info == LAPACK_WORK_MEMORY_ERROR ) {
85  LAPACKE_xerbla( "LAPACKE_dsysv_aa_2stage", info );
86  }
87  return info;
88 }
#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_dsysv_aa_2stage_work(int matrix_layout, char uplo, lapack_int n, lapack_int nrhs, double *a, lapack_int lda, double *tb, lapack_int ltb, lapack_int *ipiv, lapack_int *ipiv2, double *b, lapack_int ldb, double *work, lapack_int lwork)
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
#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_dsy_nancheck(int matrix_layout, char uplo, lapack_int n, const double *a, lapack_int lda)
int LAPACKE_get_nancheck()
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