LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgbrfs()

lapack_int LAPACKE_dgbrfs ( int  matrix_layout,
char  trans,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
lapack_int  nrhs,
const double *  ab,
lapack_int  ldab,
const double *  afb,
lapack_int  ldafb,
const lapack_int ipiv,
const double *  b,
lapack_int  ldb,
double *  x,
lapack_int  ldx,
double *  ferr,
double *  berr 
)

Definition at line 35 of file lapacke_dgbrfs.c.

41 {
42  lapack_int info = 0;
43  lapack_int* iwork = NULL;
44  double* work = NULL;
45  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46  LAPACKE_xerbla( "LAPACKE_dgbrfs", -1 );
47  return -1;
48  }
49 #ifndef LAPACK_DISABLE_NAN_CHECK
50  if( LAPACKE_get_nancheck() ) {
51  /* Optionally check input matrices for NaNs */
52  if( LAPACKE_dgb_nancheck( matrix_layout, n, n, kl, ku, ab, ldab ) ) {
53  return -7;
54  }
55  if( LAPACKE_dgb_nancheck( matrix_layout, n, n, kl, kl+ku, afb, ldafb ) ) {
56  return -9;
57  }
58  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
59  return -12;
60  }
61  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
62  return -14;
63  }
64  }
65 #endif
66  /* Allocate memory for working array(s) */
67  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
68  if( iwork == NULL ) {
70  goto exit_level_0;
71  }
72  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n) );
73  if( work == NULL ) {
75  goto exit_level_1;
76  }
77  /* Call middle-level interface */
78  info = LAPACKE_dgbrfs_work( matrix_layout, trans, n, kl, ku, nrhs, ab, ldab,
79  afb, ldafb, ipiv, b, ldb, x, ldx, ferr, berr,
80  work, iwork );
81  /* Release memory and exit */
82  LAPACKE_free( work );
83 exit_level_1:
84  LAPACKE_free( iwork );
85 exit_level_0:
86  if( info == LAPACK_WORK_MEMORY_ERROR ) {
87  LAPACKE_xerbla( "LAPACKE_dgbrfs", info );
88  }
89  return info;
90 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
lapack_int LAPACKE_dgbrfs_work(int matrix_layout, char trans, lapack_int n, lapack_int kl, lapack_int ku, lapack_int nrhs, const double *ab, lapack_int ldab, const double *afb, lapack_int ldafb, const lapack_int *ipiv, const double *b, lapack_int ldb, double *x, lapack_int ldx, double *ferr, double *berr, double *work, lapack_int *iwork)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
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)
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