LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dpbrfs()

lapack_int LAPACKE_dpbrfs ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  kd,
lapack_int  nrhs,
const double *  ab,
lapack_int  ldab,
const double *  afb,
lapack_int  ldafb,
const double *  b,
lapack_int  ldb,
double *  x,
lapack_int  ldx,
double *  ferr,
double *  berr 
)

Definition at line 35 of file lapacke_dpbrfs.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_dpbrfs", -1 );
46  return -1;
47  }
48 #ifndef LAPACK_DISABLE_NAN_CHECK
49  if( LAPACKE_get_nancheck() ) {
50  /* Optionally check input matrices for NaNs */
51  if( LAPACKE_dpb_nancheck( matrix_layout, uplo, n, kd, ab, ldab ) ) {
52  return -6;
53  }
54  if( LAPACKE_dpb_nancheck( matrix_layout, uplo, n, kd, afb, ldafb ) ) {
55  return -8;
56  }
57  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
58  return -10;
59  }
60  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
61  return -12;
62  }
63  }
64 #endif
65  /* Allocate memory for working array(s) */
66  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
67  if( iwork == NULL ) {
69  goto exit_level_0;
70  }
71  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n) );
72  if( work == NULL ) {
74  goto exit_level_1;
75  }
76  /* Call middle-level interface */
77  info = LAPACKE_dpbrfs_work( matrix_layout, uplo, n, kd, nrhs, ab, ldab, afb,
78  ldafb, b, ldb, x, ldx, ferr, berr, work,
79  iwork );
80  /* Release memory and exit */
81  LAPACKE_free( work );
82 exit_level_1:
83  LAPACKE_free( iwork );
84 exit_level_0:
85  if( info == LAPACK_WORK_MEMORY_ERROR ) {
86  LAPACKE_xerbla( "LAPACKE_dpbrfs", info );
87  }
88  return info;
89 }
#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
lapack_int LAPACKE_dpbrfs_work(int matrix_layout, char uplo, lapack_int n, lapack_int kd, lapack_int nrhs, const double *ab, lapack_int ldab, const double *afb, lapack_int ldafb, const double *b, lapack_int ldb, double *x, lapack_int ldx, double *ferr, double *berr, double *work, lapack_int *iwork)
int LAPACKE_get_nancheck(void)
#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_dpb_nancheck(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const double *ab, lapack_int ldab)
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