LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dsbev()

lapack_int LAPACKE_dsbev ( int  matrix_layout,
char  jobz,
char  uplo,
lapack_int  n,
lapack_int  kd,
double *  ab,
lapack_int  ldab,
double *  w,
double *  z,
lapack_int  ldz 
)

Definition at line 36 of file lapacke_dsbev.c.

39 {
40  lapack_int info = 0;
41  double* work = NULL;
42  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
43  LAPACKE_xerbla( "LAPACKE_dsbev", -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_dsb_nancheck( matrix_layout, uplo, n, kd, ab, ldab ) ) {
50  return -6;
51  }
52  }
53 #endif
54  /* Allocate memory for working array(s) */
55  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n-2) );
56  if( work == NULL ) {
58  goto exit_level_0;
59  }
60  /* Call middle-level interface */
61  info = LAPACKE_dsbev_work( matrix_layout, jobz, uplo, n, kd, ab, ldab, w, z,
62  ldz, work );
63  /* Release memory and exit */
64  LAPACKE_free( work );
65 exit_level_0:
66  if( info == LAPACK_WORK_MEMORY_ERROR ) {
67  LAPACKE_xerbla( "LAPACKE_dsbev", info );
68  }
69  return info;
70 }
lapack_int LAPACKE_dsbev_work(int matrix_layout, char jobz, char uplo, lapack_int n, lapack_int kd, double *ab, lapack_int ldab, double *w, double *z, lapack_int ldz, double *work)
#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
#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_dsb_nancheck(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const double *ab, lapack_int ldab)
int LAPACKE_get_nancheck()
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