LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapack_int LAPACKE_ctbrfs_work ( int  matrix_layout,
char  uplo,
char  trans,
char  diag,
lapack_int  n,
lapack_int  kd,
lapack_int  nrhs,
const lapack_complex_float *  ab,
lapack_int  ldab,
const lapack_complex_float *  b,
lapack_int  ldb,
const lapack_complex_float *  x,
lapack_int  ldx,
float *  ferr,
float *  berr,
lapack_complex_float *  work,
float *  rwork 
)

Definition at line 36 of file lapacke_ctbrfs_work.c.

43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_ctbrfs( &uplo, &trans, &diag, &n, &kd, &nrhs, ab, &ldab, b, &ldb,
48  x, &ldx, ferr, berr, work, rwork, &info );
49  if( info < 0 ) {
50  info = info - 1;
51  }
52  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53  lapack_int ldab_t = MAX(1,kd+1);
54  lapack_int ldb_t = MAX(1,n);
55  lapack_int ldx_t = MAX(1,n);
56  lapack_complex_float* ab_t = NULL;
57  lapack_complex_float* b_t = NULL;
58  lapack_complex_float* x_t = NULL;
59  /* Check leading dimension(s) */
60  if( ldab < n ) {
61  info = -9;
62  LAPACKE_xerbla( "LAPACKE_ctbrfs_work", info );
63  return info;
64  }
65  if( ldb < nrhs ) {
66  info = -11;
67  LAPACKE_xerbla( "LAPACKE_ctbrfs_work", info );
68  return info;
69  }
70  if( ldx < nrhs ) {
71  info = -13;
72  LAPACKE_xerbla( "LAPACKE_ctbrfs_work", info );
73  return info;
74  }
75  /* Allocate memory for temporary array(s) */
76  ab_t = (lapack_complex_float*)
77  LAPACKE_malloc( sizeof(lapack_complex_float) * ldab_t * MAX(1,n) );
78  if( ab_t == NULL ) {
79  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
80  goto exit_level_0;
81  }
82  b_t = (lapack_complex_float*)
83  LAPACKE_malloc( sizeof(lapack_complex_float) *
84  ldb_t * MAX(1,nrhs) );
85  if( b_t == NULL ) {
86  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
87  goto exit_level_1;
88  }
89  x_t = (lapack_complex_float*)
90  LAPACKE_malloc( sizeof(lapack_complex_float) *
91  ldx_t * MAX(1,nrhs) );
92  if( x_t == NULL ) {
93  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
94  goto exit_level_2;
95  }
96  /* Transpose input matrices */
97  LAPACKE_ctb_trans( matrix_layout, uplo, diag, n, kd, ab, ldab, ab_t,
98  ldab_t );
99  LAPACKE_cge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
100  LAPACKE_cge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
101  /* Call LAPACK function and adjust info */
102  LAPACK_ctbrfs( &uplo, &trans, &diag, &n, &kd, &nrhs, ab_t, &ldab_t, b_t,
103  &ldb_t, x_t, &ldx_t, ferr, berr, work, rwork, &info );
104  if( info < 0 ) {
105  info = info - 1;
106  }
107  /* Release memory and exit */
108  LAPACKE_free( x_t );
109 exit_level_2:
110  LAPACKE_free( b_t );
111 exit_level_1:
112  LAPACKE_free( ab_t );
113 exit_level_0:
114  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
115  LAPACKE_xerbla( "LAPACKE_ctbrfs_work", info );
116  }
117  } else {
118  info = -1;
119  LAPACKE_xerbla( "LAPACKE_ctbrfs_work", info );
120  }
121  return info;
122 }
LAPACKE_cge_trans
void LAPACKE_cge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
Definition: lapacke_cge_trans.c:40
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
LAPACK_ctbrfs
void LAPACK_ctbrfs(char *uplo, char *trans, char *diag, lapack_int *n, lapack_int *kd, lapack_int *nrhs, const lapack_complex_float *ab, lapack_int *ldab, const lapack_complex_float *b, lapack_int *ldb, const lapack_complex_float *x, lapack_int *ldx, float *ferr, float *berr, lapack_complex_float *work, float *rwork, lapack_int *info)
lapack_complex_float
#define lapack_complex_float
Definition: lapacke.h:74
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:47
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:113
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
LAPACKE_ctb_trans
void LAPACKE_ctb_trans(int matrix_layout, char uplo, char diag, lapack_int n, lapack_int kd, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
Definition: lapacke_ctb_trans.c:40
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:37
lapack_int
#define lapack_int
Definition: lapacke.h:47
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123

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