LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dtbcon_work()

lapack_int LAPACKE_dtbcon_work ( int  matrix_layout,
char  norm,
char  uplo,
char  diag,
lapack_int  n,
lapack_int  kd,
const double *  ab,
lapack_int  ldab,
double *  rcond,
double *  work,
lapack_int iwork 
)

Definition at line 36 of file lapacke_dtbcon_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_dtbcon( &norm, &uplo, &diag, &n, &kd, ab, &ldab, rcond, work,
45  iwork, &info );
46  if( info < 0 ) {
47  info = info - 1;
48  }
49  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50  lapack_int ldab_t = MAX(1,kd+1);
51  double* ab_t = NULL;
52  /* Check leading dimension(s) */
53  if( ldab < n ) {
54  info = -8;
55  LAPACKE_xerbla( "LAPACKE_dtbcon_work", info );
56  return info;
57  }
58  /* Allocate memory for temporary array(s) */
59  ab_t = (double*)LAPACKE_malloc( sizeof(double) * ldab_t * MAX(1,n) );
60  if( ab_t == NULL ) {
62  goto exit_level_0;
63  }
64  /* Transpose input matrices */
65  LAPACKE_dtb_trans( matrix_layout, uplo, diag, n, kd, ab, ldab, ab_t,
66  ldab_t );
67  /* Call LAPACK function and adjust info */
68  LAPACK_dtbcon( &norm, &uplo, &diag, &n, &kd, ab_t, &ldab_t, rcond, work,
69  iwork, &info );
70  if( info < 0 ) {
71  info = info - 1;
72  }
73  /* Release memory and exit */
74  LAPACKE_free( ab_t );
75 exit_level_0:
76  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
77  LAPACKE_xerbla( "LAPACKE_dtbcon_work", info );
78  }
79  } else {
80  info = -1;
81  LAPACKE_xerbla( "LAPACKE_dtbcon_work", info );
82  }
83  return info;
84 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACKE_dtb_trans(int matrix_layout, char uplo, char diag, lapack_int n, lapack_int kd, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#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
void LAPACK_dtbcon(char *norm, char *uplo, char *diag, lapack_int *n, lapack_int *kd, const double *ab, lapack_int *ldab, double *rcond, double *work, lapack_int *iwork, lapack_int *info)
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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