LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ztbrfs_work()

lapack_int LAPACKE_ztbrfs_work ( int  matrix_layout,
char  uplo,
char  trans,
char  diag,
lapack_int  n,
lapack_int  kd,
lapack_int  nrhs,
const lapack_complex_double ab,
lapack_int  ldab,
const lapack_complex_double b,
lapack_int  ldb,
const lapack_complex_double x,
lapack_int  ldx,
double *  ferr,
double *  berr,
lapack_complex_double work,
double *  rwork 
)

Definition at line 36 of file lapacke_ztbrfs_work.c.

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