LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgbrfs()

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

Definition at line 36 of file lapacke_zgbrfs.c.

44 {
45  lapack_int info = 0;
46  double* rwork = NULL;
47  lapack_complex_double* work = NULL;
48  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49  LAPACKE_xerbla( "LAPACKE_zgbrfs", -1 );
50  return -1;
51  }
52 #ifndef LAPACK_DISABLE_NAN_CHECK
53  if( LAPACKE_get_nancheck() ) {
54  /* Optionally check input matrices for NaNs */
55  if( LAPACKE_zgb_nancheck( matrix_layout, n, n, kl, ku, ab, ldab ) ) {
56  return -7;
57  }
58  if( LAPACKE_zgb_nancheck( matrix_layout, n, n, kl, kl+ku, afb, ldafb ) ) {
59  return -9;
60  }
61  if( LAPACKE_zge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
62  return -12;
63  }
64  if( LAPACKE_zge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
65  return -14;
66  }
67  }
68 #endif
69  /* Allocate memory for working array(s) */
70  rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
71  if( rwork == NULL ) {
73  goto exit_level_0;
74  }
75  work = (lapack_complex_double*)
76  LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,2*n) );
77  if( work == NULL ) {
79  goto exit_level_1;
80  }
81  /* Call middle-level interface */
82  info = LAPACKE_zgbrfs_work( matrix_layout, trans, n, kl, ku, nrhs, ab, ldab,
83  afb, ldafb, ipiv, b, ldb, x, ldx, ferr, berr,
84  work, rwork );
85  /* Release memory and exit */
86  LAPACKE_free( work );
87 exit_level_1:
88  LAPACKE_free( rwork );
89 exit_level_0:
90  if( info == LAPACK_WORK_MEMORY_ERROR ) {
91  LAPACKE_xerbla( "LAPACKE_zgbrfs", info );
92  }
93  return info;
94 }
#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 lapack_complex_double
Definition: lapacke.h:90
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_int LAPACKE_zgbrfs_work(int matrix_layout, char trans, lapack_int n, lapack_int kl, lapack_int ku, lapack_int nrhs, const lapack_complex_double *ab, lapack_int ldab, const lapack_complex_double *afb, lapack_int ldafb, const lapack_int *ipiv, const lapack_complex_double *b, lapack_int ldb, lapack_complex_double *x, lapack_int ldx, double *ferr, double *berr, lapack_complex_double *work, double *rwork)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
lapack_logical LAPACKE_zgb_nancheck(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const lapack_complex_double *ab, lapack_int ldab)
int LAPACKE_get_nancheck()
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