LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ 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 );
83exit_level_1:
84 LAPACKE_free( iwork );
85exit_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:87
#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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