LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dlansy()

double LAPACKE_dlansy ( int  matrix_layout,
char  norm,
char  uplo,
lapack_int  n,
const double *  a,
lapack_int  lda 
)

Definition at line 36 of file lapacke_dlansy.c.

38 {
39  lapack_int info = 0;
40  double res = 0.;
41  double* work = NULL;
42  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
43  LAPACKE_xerbla( "LAPACKE_dlansy", -1 );
44  return -1;
45  }
46 #ifndef LAPACK_DISABLE_NAN_CHECK
47  if( LAPACKE_get_nancheck() ) {
48  /* Optionally check input matrices for NaNs */
49  if( LAPACKE_dsy_nancheck( matrix_layout, uplo, n, a, lda ) ) {
50  return -5;
51  }
52  }
53 #endif
54  /* Allocate memory for working array(s) */
55  if( LAPACKE_lsame( norm, 'i' ) || LAPACKE_lsame( norm, '1' ) ||
56  LAPACKE_lsame( norm, 'O' ) ) {
57  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
58  if( work == NULL ) {
60  goto exit_level_0;
61  }
62  }
63  /* Call middle-level interface */
64  res = LAPACKE_dlansy_work( matrix_layout, norm, uplo, n, a, lda, work );
65  /* Release memory and exit */
66  if( LAPACKE_lsame( norm, 'i' ) || LAPACKE_lsame( norm, '1' ) ||
67  LAPACKE_lsame( norm, 'O' ) ) {
68  LAPACKE_free( work );
69  }
70 exit_level_0:
71  if( info == LAPACK_WORK_MEMORY_ERROR ) {
72  LAPACKE_xerbla( "LAPACKE_dlansy", info );
73  }
74  return res;
75 }
#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
double LAPACKE_dlansy_work(int matrix_layout, char norm, char uplo, lapack_int n, const double *a, lapack_int lda, double *work)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#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)
#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()
Here is the call graph for this function: