LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgbrfs()

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

Definition at line 36 of file lapacke_sgbrfs.c.

42 {
43  lapack_int info = 0;
44  lapack_int* iwork = NULL;
45  float* work = NULL;
46  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47  LAPACKE_xerbla( "LAPACKE_sgbrfs", -1 );
48  return -1;
49  }
50 #ifndef LAPACK_DISABLE_NAN_CHECK
51  /* Optionally check input matrices for NaNs */
52  if( LAPACKE_sgb_nancheck( matrix_layout, n, n, kl, ku, ab, ldab ) ) {
53  return -7;
54  }
55  if( LAPACKE_sgb_nancheck( matrix_layout, n, n, kl, kl+ku, afb, ldafb ) ) {
56  return -9;
57  }
58  if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
59  return -12;
60  }
61  if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
62  return -14;
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 = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,3*n) );
72  if( work == NULL ) {
74  goto exit_level_1;
75  }
76  /* Call middle-level interface */
77  info = LAPACKE_sgbrfs_work( matrix_layout, trans, n, kl, ku, nrhs, ab, ldab,
78  afb, ldafb, ipiv, b, ldb, x, ldx, ferr, berr,
79  work, 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_sgbrfs", info );
87  }
88  return info;
89 }
#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
lapack_logical LAPACKE_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
lapack_int LAPACKE_sgbrfs_work(int matrix_layout, char trans, lapack_int n, lapack_int kl, lapack_int ku, lapack_int nrhs, const float *ab, lapack_int ldab, const float *afb, lapack_int ldafb, const lapack_int *ipiv, const float *b, lapack_int ldb, float *x, lapack_int ldx, float *ferr, float *berr, float *work, lapack_int *iwork)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_sgb_nancheck(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const float *ab, lapack_int ldab)
#define lapack_int
Definition: lapacke.h:47
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