LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgbcon()

lapack_int LAPACKE_dgbcon ( int  matrix_layout,
char  norm,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
const double *  ab,
lapack_int  ldab,
const lapack_int ipiv,
double  anorm,
double *  rcond 
)

Definition at line 36 of file lapacke_dgbcon.c.

40 {
41  lapack_int info = 0;
42  lapack_int* iwork = NULL;
43  double* work = NULL;
44  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45  LAPACKE_xerbla( "LAPACKE_dgbcon", -1 );
46  return -1;
47  }
48 #ifndef LAPACK_DISABLE_NAN_CHECK
49  /* Optionally check input matrices for NaNs */
50  if( LAPACKE_dgb_nancheck( matrix_layout, n, n, kl, kl+ku, ab, ldab ) ) {
51  return -6;
52  }
53  if( LAPACKE_d_nancheck( 1, &anorm, 1 ) ) {
54  return -9;
55  }
56 #endif
57  /* Allocate memory for working array(s) */
58  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
59  if( iwork == NULL ) {
61  goto exit_level_0;
62  }
63  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n) );
64  if( work == NULL ) {
66  goto exit_level_1;
67  }
68  /* Call middle-level interface */
69  info = LAPACKE_dgbcon_work( matrix_layout, norm, n, kl, ku, ab, ldab, ipiv,
70  anorm, rcond, work, iwork );
71  /* Release memory and exit */
72  LAPACKE_free( work );
73 exit_level_1:
74  LAPACKE_free( iwork );
75 exit_level_0:
76  if( info == LAPACK_WORK_MEMORY_ERROR ) {
77  LAPACKE_xerbla( "LAPACKE_dgbcon", info );
78  }
79  return info;
80 }
lapack_int LAPACKE_dgbcon_work(int matrix_layout, char norm, lapack_int n, lapack_int kl, lapack_int ku, const double *ab, lapack_int ldab, const lapack_int *ipiv, double anorm, double *rcond, double *work, lapack_int *iwork)
#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_d_nancheck(lapack_int n, const double *x, lapack_int incx)
lapack_logical LAPACKE_dgb_nancheck(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const double *ab, lapack_int ldab)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
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