LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dsytrf_aa_2stage()

lapack_int LAPACKE_dsytrf_aa_2stage ( int  matrix_layout,
char  uplo,
lapack_int  n,
double *  a,
lapack_int  lda,
double *  tb,
lapack_int  ltb,
lapack_int ipiv,
lapack_int ipiv2 
)

Definition at line 36 of file lapacke_dsytrf_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_dsytrf_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  }
59 #endif
60  /* Query optimal working array(s) size */
61  info = LAPACKE_dsytrf_aa_2stage_work( matrix_layout, uplo, n,
62  a, lda, tb, ltb, ipiv, ipiv2,
63  &work_query, lwork );
64  if( info != 0 ) {
65  goto exit_level_0;
66  }
67  lwork = (lapack_int)work_query;
68  /* Allocate memory for work arrays */
69  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
70  if( work == NULL ) {
72  goto exit_level_0;
73  }
74  /* Call middle-level interface */
75  info = LAPACKE_dsytrf_aa_2stage_work( matrix_layout, uplo, n,
76  a, lda, tb, ltb, ipiv, ipiv2,
77  work, lwork );
78  /* Release memory and exit */
79  LAPACKE_free( work );
80 exit_level_0:
81  if( info == LAPACK_WORK_MEMORY_ERROR ) {
82  LAPACKE_xerbla( "LAPACKE_dsytrf_aa_2stage", info );
83  }
84  return info;
85 }
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
int LAPACKE_get_nancheck()
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
lapack_int LAPACKE_dsytrf_aa_2stage_work(int matrix_layout, char uplo, lapack_int n, double *a, lapack_int lda, double *tb, lapack_int ltb, lapack_int *ipiv, lapack_int *ipiv2, double *work, lapack_int lwork)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_dsy_nancheck(int matrix_layout, char uplo, lapack_int n, const double *a, lapack_int lda)
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