LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dsytri_3()

lapack_int LAPACKE_dsytri_3 ( int  matrix_layout,
char  uplo,
lapack_int  n,
double *  a,
lapack_int  lda,
const double *  e,
const lapack_int ipiv 
)

Definition at line 36 of file lapacke_dsytri_3.c.

38 {
39  lapack_int info = 0;
40  lapack_int lwork = -1;
41  double* work = NULL;
42  double work_query;
43  lapack_int e_start = LAPACKE_lsame( uplo, 'U' ) ? 1 : 0;
44  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45  LAPACKE_xerbla( "LAPACKE_dsytri_3", -1 );
46  return -1;
47  }
48 #ifndef LAPACK_DISABLE_NAN_CHECK
49  /* Optionally check input matrices for NaNs */
50  if( LAPACKE_dsy_nancheck( matrix_layout, uplo, n, a, lda ) ) {
51  return -4;
52  }
53  if( LAPACKE_d_nancheck( n-1, e + e_start, 1 ) ) {
54  return -6;
55  }
56 #endif
57  /* Query optimal working array(s) size */
58  info = LAPACKE_dsytri_3_work( matrix_layout, uplo, n, a, lda, e, ipiv,
59  &work_query, lwork );
60  if( info != 0 ) {
61  goto exit_level_0;
62  }
63  lwork = (lapack_int)work_query;
64  /* Allocate memory for working array(s) */
65  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
66  if( work == NULL ) {
68  goto exit_level_0;
69  }
70  /* Call middle-level interface */
71  info = LAPACKE_dsytri_3_work( matrix_layout, uplo, n, a, lda, e, ipiv, work, lwork );
72  /* Release memory and exit */
73  LAPACKE_free( work );
74 exit_level_0:
75  if( info == LAPACK_WORK_MEMORY_ERROR ) {
76  LAPACKE_xerbla( "LAPACKE_dsytri_3", info );
77  }
78  return info;
79 }
lapack_int LAPACKE_dsytri_3_work(int matrix_layout, char uplo, lapack_int n, double *a, lapack_int lda, const double *e, const lapack_int *ipiv, double *work, lapack_int lwork)
#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
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
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
lapack_logical LAPACKE_dsy_nancheck(int matrix_layout, char uplo, lapack_int n, const double *a, lapack_int lda)
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