LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ctbrfs_work()

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 35 of file lapacke_ctbrfs_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_ctbrfs( &uplo, &trans, &diag, &n, &kd, &nrhs, ab, &ldab, b, &ldb,
47  x, &ldx, ferr, berr, work, rwork, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int ldab_t = MAX(1,kd+1);
53  lapack_int ldb_t = MAX(1,n);
54  lapack_int ldx_t = MAX(1,n);
55  lapack_complex_float* ab_t = NULL;
56  lapack_complex_float* b_t = NULL;
57  lapack_complex_float* x_t = NULL;
58  /* Check leading dimension(s) */
59  if( ldab < n ) {
60  info = -9;
61  LAPACKE_xerbla( "LAPACKE_ctbrfs_work", info );
62  return info;
63  }
64  if( ldb < nrhs ) {
65  info = -11;
66  LAPACKE_xerbla( "LAPACKE_ctbrfs_work", info );
67  return info;
68  }
69  if( ldx < nrhs ) {
70  info = -13;
71  LAPACKE_xerbla( "LAPACKE_ctbrfs_work", info );
72  return info;
73  }
74  /* Allocate memory for temporary array(s) */
75  ab_t = (lapack_complex_float*)
76  LAPACKE_malloc( sizeof(lapack_complex_float) * ldab_t * MAX(1,n) );
77  if( ab_t == NULL ) {
79  goto exit_level_0;
80  }
81  b_t = (lapack_complex_float*)
83  ldb_t * MAX(1,nrhs) );
84  if( b_t == NULL ) {
86  goto exit_level_1;
87  }
88  x_t = (lapack_complex_float*)
90  ldx_t * MAX(1,nrhs) );
91  if( x_t == NULL ) {
93  goto exit_level_2;
94  }
95  /* Transpose input matrices */
96  LAPACKE_ctb_trans( matrix_layout, uplo, diag, n, kd, ab, ldab, ab_t,
97  ldab_t );
98  LAPACKE_cge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
99  LAPACKE_cge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
100  /* Call LAPACK function and adjust info */
101  LAPACK_ctbrfs( &uplo, &trans, &diag, &n, &kd, &nrhs, ab_t, &ldab_t, b_t,
102  &ldb_t, x_t, &ldx_t, ferr, berr, work, rwork, &info );
103  if( info < 0 ) {
104  info = info - 1;
105  }
106  /* Release memory and exit */
107  LAPACKE_free( x_t );
108 exit_level_2:
109  LAPACKE_free( b_t );
110 exit_level_1:
111  LAPACKE_free( ab_t );
112 exit_level_0:
113  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
114  LAPACKE_xerbla( "LAPACKE_ctbrfs_work", info );
115  }
116  } else {
117  info = -1;
118  LAPACKE_xerbla( "LAPACKE_ctbrfs_work", info );
119  }
120  return info;
121 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_ctbrfs(...)
Definition: lapack.h:19634
#define lapack_complex_float
Definition: lapack.h:45
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
void LAPACKE_xerbla(const char *name, lapack_int info)
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)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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)
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