LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_slansy()

float LAPACKE_slansy ( int  matrix_layout,
char  norm,
char  uplo,
lapack_int  n,
const float *  a,
lapack_int  lda 
)

Definition at line 36 of file lapacke_slansy.c.

38 {
39  lapack_int info = 0;
40  float res = 0.;
41  float* work = NULL;
42  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
43  LAPACKE_xerbla( "LAPACKE_slansy", -1 );
44  return -1;
45  }
46 #ifndef LAPACK_DISABLE_NAN_CHECK
47  /* Optionally check input matrices for NaNs */
48  if( LAPACKE_ssy_nancheck( matrix_layout, uplo, n, a, lda ) ) {
49  return -5;
50  }
51 #endif
52  /* Allocate memory for working array(s) */
53  if( LAPACKE_lsame( norm, 'i' ) || LAPACKE_lsame( norm, '1' ) ||
54  LAPACKE_lsame( norm, 'O' ) ) {
55  work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) );
56  if( work == NULL ) {
58  goto exit_level_0;
59  }
60  }
61  /* Call middle-level interface */
62  res = LAPACKE_slansy_work( matrix_layout, norm, uplo, n, a, lda, work );
63  /* Release memory and exit */
64  if( LAPACKE_lsame( norm, 'i' ) || LAPACKE_lsame( norm, '1' ) ||
65  LAPACKE_lsame( norm, 'O' ) ) {
66  LAPACKE_free( work );
67  }
68 exit_level_0:
69  if( info == LAPACK_WORK_MEMORY_ERROR ) {
70  LAPACKE_xerbla( "LAPACKE_slansy", info );
71  }
72  return res;
73 }
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
#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
float LAPACKE_slansy_work(int matrix_layout, char norm, char uplo, lapack_int n, const float *a, lapack_int lda, float *work)
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