LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ssytri_3()

lapack_int LAPACKE_ssytri_3 ( int  matrix_layout,
char  uplo,
lapack_int  n,
float *  a,
lapack_int  lda,
const float *  e,
const lapack_int ipiv 
)

Definition at line 36 of file lapacke_ssytri_3.c.

38 {
39  lapack_int info = 0;
40  lapack_int lwork = -1;
41  float* work = NULL;
42  float 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_ssytri_3", -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_ssy_nancheck( matrix_layout, uplo, n, a, lda ) ) {
52  return -4;
53  }
54  if( LAPACKE_s_nancheck( n-1, e + e_start, 1 ) ) {
55  return -6;
56  }
57  }
58 #endif
59  /* Query optimal working array(s) size */
60  info = LAPACKE_ssytri_3_work( matrix_layout, uplo, n, a, lda, e, ipiv,
61  &work_query, lwork );
62  if( info != 0 ) {
63  goto exit_level_0;
64  }
65  lwork = (lapack_int)work_query;
66  /* Allocate memory for working array(s) */
67  work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
68  if( work == NULL ) {
70  goto exit_level_0;
71  }
72  /* Call middle-level interface */
73  info = LAPACKE_ssytri_3_work( matrix_layout, uplo, n, a, lda, e, ipiv, work, lwork);
74  /* Release memory and exit */
75  LAPACKE_free( work );
76 exit_level_0:
77  if( info == LAPACK_WORK_MEMORY_ERROR ) {
78  LAPACKE_xerbla( "LAPACKE_ssytri_3", info );
79  }
80  return info;
81 }
lapack_logical LAPACKE_ssy_nancheck(int matrix_layout, char uplo, lapack_int n, const float *a, lapack_int lda)
#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_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
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)
lapack_int LAPACKE_ssytri_3_work(int matrix_layout, char uplo, lapack_int n, float *a, lapack_int lda, const float *e, const lapack_int *ipiv, float *work, lapack_int lwork)
#define lapack_int
Definition: lapacke.h:47
int LAPACKE_get_nancheck()
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