LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgbrfsx_work()

lapack_int LAPACKE_dgbrfsx_work ( int  matrix_layout,
char  trans,
char  equed,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
lapack_int  nrhs,
const double *  ab,
lapack_int  ldab,
const double *  afb,
lapack_int  ldafb,
const lapack_int ipiv,
const double *  r,
const double *  c,
const double *  b,
lapack_int  ldb,
double *  x,
lapack_int  ldx,
double *  rcond,
double *  berr,
lapack_int  n_err_bnds,
double *  err_bnds_norm,
double *  err_bnds_comp,
lapack_int  nparams,
double *  params,
double *  work,
lapack_int iwork 
)

Definition at line 36 of file lapacke_dgbrfsx_work.c.

48 {
49  lapack_int info = 0;
50  if( matrix_layout == LAPACK_COL_MAJOR ) {
51  /* Call LAPACK function and adjust info */
52  LAPACK_dgbrfsx( &trans, &equed, &n, &kl, &ku, &nrhs, ab, &ldab, afb,
53  &ldafb, ipiv, r, c, b, &ldb, x, &ldx, rcond, berr,
54  &n_err_bnds, err_bnds_norm, err_bnds_comp, &nparams,
55  params, work, iwork, &info );
56  if( info < 0 ) {
57  info = info - 1;
58  }
59  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
60  lapack_int ldab_t = MAX(1,kl+ku+1);
61  lapack_int ldafb_t = MAX(1,2*kl+ku+1);
62  lapack_int ldb_t = MAX(1,n);
63  lapack_int ldx_t = MAX(1,n);
64  double* ab_t = NULL;
65  double* afb_t = NULL;
66  double* b_t = NULL;
67  double* x_t = NULL;
68  double* err_bnds_norm_t = NULL;
69  double* err_bnds_comp_t = NULL;
70  /* Check leading dimension(s) */
71  if( ldab < n ) {
72  info = -9;
73  LAPACKE_xerbla( "LAPACKE_dgbrfsx_work", info );
74  return info;
75  }
76  if( ldafb < n ) {
77  info = -11;
78  LAPACKE_xerbla( "LAPACKE_dgbrfsx_work", info );
79  return info;
80  }
81  if( ldb < nrhs ) {
82  info = -16;
83  LAPACKE_xerbla( "LAPACKE_dgbrfsx_work", info );
84  return info;
85  }
86  if( ldx < nrhs ) {
87  info = -18;
88  LAPACKE_xerbla( "LAPACKE_dgbrfsx_work", info );
89  return info;
90  }
91  /* Allocate memory for temporary array(s) */
92  ab_t = (double*)LAPACKE_malloc( sizeof(double) * ldab_t * MAX(1,n) );
93  if( ab_t == NULL ) {
95  goto exit_level_0;
96  }
97  afb_t = (double*)LAPACKE_malloc( sizeof(double) * ldafb_t * MAX(1,n) );
98  if( afb_t == NULL ) {
100  goto exit_level_1;
101  }
102  b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
103  if( b_t == NULL ) {
105  goto exit_level_2;
106  }
107  x_t = (double*)LAPACKE_malloc( sizeof(double) * ldx_t * MAX(1,nrhs) );
108  if( x_t == NULL ) {
110  goto exit_level_3;
111  }
112  err_bnds_norm_t = (double*)
113  LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
114  if( err_bnds_norm_t == NULL ) {
116  goto exit_level_4;
117  }
118  err_bnds_comp_t = (double*)
119  LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
120  if( err_bnds_comp_t == NULL ) {
122  goto exit_level_5;
123  }
124  /* Transpose input matrices */
125  LAPACKE_dgb_trans( matrix_layout, n, n, kl, ku, ab, ldab, ab_t, ldab_t );
126  LAPACKE_dgb_trans( matrix_layout, n, n, kl, kl+ku, afb, ldafb, afb_t,
127  ldafb_t );
128  LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
129  LAPACKE_dge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
130  /* Call LAPACK function and adjust info */
131  LAPACK_dgbrfsx( &trans, &equed, &n, &kl, &ku, &nrhs, ab_t, &ldab_t,
132  afb_t, &ldafb_t, ipiv, r, c, b_t, &ldb_t, x_t, &ldx_t,
133  rcond, berr, &n_err_bnds, err_bnds_norm_t,
134  err_bnds_comp_t, &nparams, params, work, iwork, &info );
135  if( info < 0 ) {
136  info = info - 1;
137  }
138  /* Transpose output matrices */
139  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
140  LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_norm_t,
141  nrhs, err_bnds_norm, nrhs );
142  LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_comp_t,
143  nrhs, err_bnds_comp, nrhs );
144  /* Release memory and exit */
145  LAPACKE_free( err_bnds_comp_t );
146 exit_level_5:
147  LAPACKE_free( err_bnds_norm_t );
148 exit_level_4:
149  LAPACKE_free( x_t );
150 exit_level_3:
151  LAPACKE_free( b_t );
152 exit_level_2:
153  LAPACKE_free( afb_t );
154 exit_level_1:
155  LAPACKE_free( ab_t );
156 exit_level_0:
157  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
158  LAPACKE_xerbla( "LAPACKE_dgbrfsx_work", info );
159  }
160  } else {
161  info = -1;
162  LAPACKE_xerbla( "LAPACKE_dgbrfsx_work", info );
163  }
164  return info;
165 }
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
void LAPACKE_dgb_trans(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_dgbrfsx(char *trans, char *equed, lapack_int *n, lapack_int *kl, lapack_int *ku, lapack_int *nrhs, const double *ab, lapack_int *ldab, const double *afb, lapack_int *ldafb, const lapack_int *ipiv, const double *r, const double *c, const double *b, lapack_int *ldb, double *x, lapack_int *ldx, double *rcond, double *berr, lapack_int *n_err_bnds, double *err_bnds_norm, double *err_bnds_comp, lapack_int *nparams, double *params, double *work, lapack_int *iwork, lapack_int *info)
#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
Here is the call graph for this function:
Here is the caller graph for this function: