LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zsytrf()

lapack_int LAPACKE_zsytrf ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
lapack_int ipiv 
)

Definition at line 36 of file lapacke_zsytrf.c.

39 {
40  lapack_int info = 0;
41  lapack_int lwork = -1;
42  lapack_complex_double* work = NULL;
43  lapack_complex_double work_query;
44  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45  LAPACKE_xerbla( "LAPACKE_zsytrf", -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_zsy_nancheck( matrix_layout, uplo, n, a, lda ) ) {
52  return -4;
53  }
54  }
55 #endif
56  /* Query optimal working array(s) size */
57  info = LAPACKE_zsytrf_work( matrix_layout, uplo, n, a, lda, ipiv,
58  &work_query, lwork );
59  if( info != 0 ) {
60  goto exit_level_0;
61  }
62  lwork = LAPACK_Z2INT( work_query );
63  /* Allocate memory for work arrays */
64  work = (lapack_complex_double*)
65  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
66  if( work == NULL ) {
68  goto exit_level_0;
69  }
70  /* Call middle-level interface */
71  info = LAPACKE_zsytrf_work( matrix_layout, uplo, n, a, lda, ipiv, work,
72  lwork );
73  /* Release memory and exit */
74  LAPACKE_free( work );
75 exit_level_0:
76  if( info == LAPACK_WORK_MEMORY_ERROR ) {
77  LAPACKE_xerbla( "LAPACKE_zsytrf", info );
78  }
79  return info;
80 }
#define LAPACK_Z2INT(x)
Definition: lapacke.h:117
#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 lapack_complex_double
Definition: lapacke.h:90
lapack_int LAPACKE_zsytrf_work(int matrix_layout, char uplo, lapack_int n, lapack_complex_double *a, lapack_int lda, lapack_int *ipiv, lapack_complex_double *work, lapack_int lwork)
#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_zsy_nancheck(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *a, lapack_int lda)
int LAPACKE_get_nancheck()
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