LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dtbcon()

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

Definition at line 36 of file lapacke_dtbcon.c.

39 {
40  lapack_int info = 0;
41  lapack_int* iwork = NULL;
42  double* work = NULL;
43  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44  LAPACKE_xerbla( "LAPACKE_dtbcon", -1 );
45  return -1;
46  }
47 #ifndef LAPACK_DISABLE_NAN_CHECK
48  if( LAPACKE_get_nancheck() ) {
49  /* Optionally check input matrices for NaNs */
50  if( LAPACKE_dtb_nancheck( matrix_layout, uplo, diag, n, kd, ab, ldab ) ) {
51  return -7;
52  }
53  }
54 #endif
55  /* Allocate memory for working array(s) */
56  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
57  if( iwork == NULL ) {
59  goto exit_level_0;
60  }
61  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n) );
62  if( work == NULL ) {
64  goto exit_level_1;
65  }
66  /* Call middle-level interface */
67  info = LAPACKE_dtbcon_work( matrix_layout, norm, uplo, diag, n, kd, ab, ldab,
68  rcond, work, iwork );
69  /* Release memory and exit */
70  LAPACKE_free( work );
71 exit_level_1:
72  LAPACKE_free( iwork );
73 exit_level_0:
74  if( info == LAPACK_WORK_MEMORY_ERROR ) {
75  LAPACKE_xerbla( "LAPACKE_dtbcon", info );
76  }
77  return info;
78 }
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
int LAPACKE_get_nancheck()
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
lapack_logical LAPACKE_dtb_nancheck(int matrix_layout, char uplo, char diag, lapack_int n, lapack_int kd, const double *ab, lapack_int ldab)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACKE_xerbla(const char *name, lapack_int info)
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)
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