LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgbrfsx_work()

lapack_int LAPACKE_zgbrfsx_work ( int  matrix_layout,
char  trans,
char  equed,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
lapack_int  nrhs,
const lapack_complex_double ab,
lapack_int  ldab,
const lapack_complex_double afb,
lapack_int  ldafb,
const lapack_int ipiv,
const double *  r,
const double *  c,
const lapack_complex_double b,
lapack_int  ldb,
lapack_complex_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,
lapack_complex_double work,
double *  rwork 
)

Definition at line 36 of file lapacke_zgbrfsx_work.c.

51 {
52  lapack_int info = 0;
53  if( matrix_layout == LAPACK_COL_MAJOR ) {
54  /* Call LAPACK function and adjust info */
55  LAPACK_zgbrfsx( &trans, &equed, &n, &kl, &ku, &nrhs, ab, &ldab, afb,
56  &ldafb, ipiv, r, c, b, &ldb, x, &ldx, rcond, berr,
57  &n_err_bnds, err_bnds_norm, err_bnds_comp, &nparams,
58  params, work, rwork, &info );
59  if( info < 0 ) {
60  info = info - 1;
61  }
62  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
63  lapack_int ldab_t = MAX(1,kl+ku+1);
64  lapack_int ldafb_t = MAX(1,2*kl+ku+1);
65  lapack_int ldb_t = MAX(1,n);
66  lapack_int ldx_t = MAX(1,n);
67  lapack_complex_double* ab_t = NULL;
68  lapack_complex_double* afb_t = NULL;
69  lapack_complex_double* b_t = NULL;
70  lapack_complex_double* x_t = NULL;
71  double* err_bnds_norm_t = NULL;
72  double* err_bnds_comp_t = NULL;
73  /* Check leading dimension(s) */
74  if( ldab < n ) {
75  info = -9;
76  LAPACKE_xerbla( "LAPACKE_zgbrfsx_work", info );
77  return info;
78  }
79  if( ldafb < n ) {
80  info = -11;
81  LAPACKE_xerbla( "LAPACKE_zgbrfsx_work", info );
82  return info;
83  }
84  if( ldb < nrhs ) {
85  info = -16;
86  LAPACKE_xerbla( "LAPACKE_zgbrfsx_work", info );
87  return info;
88  }
89  if( ldx < nrhs ) {
90  info = -18;
91  LAPACKE_xerbla( "LAPACKE_zgbrfsx_work", info );
92  return info;
93  }
94  /* Allocate memory for temporary array(s) */
95  ab_t = (lapack_complex_double*)
96  LAPACKE_malloc( sizeof(lapack_complex_double) * ldab_t * MAX(1,n) );
97  if( ab_t == NULL ) {
99  goto exit_level_0;
100  }
101  afb_t = (lapack_complex_double*)
103  ldafb_t * MAX(1,n) );
104  if( afb_t == NULL ) {
106  goto exit_level_1;
107  }
108  b_t = (lapack_complex_double*)
110  ldb_t * MAX(1,nrhs) );
111  if( b_t == NULL ) {
113  goto exit_level_2;
114  }
115  x_t = (lapack_complex_double*)
117  ldx_t * MAX(1,nrhs) );
118  if( x_t == NULL ) {
120  goto exit_level_3;
121  }
122  err_bnds_norm_t = (double*)
123  LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
124  if( err_bnds_norm_t == NULL ) {
126  goto exit_level_4;
127  }
128  err_bnds_comp_t = (double*)
129  LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
130  if( err_bnds_comp_t == NULL ) {
132  goto exit_level_5;
133  }
134  /* Transpose input matrices */
135  LAPACKE_zgb_trans( matrix_layout, n, n, kl, ku, ab, ldab, ab_t, ldab_t );
136  LAPACKE_zgb_trans( matrix_layout, n, n, kl, kl+ku, afb, ldafb, afb_t,
137  ldafb_t );
138  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
139  LAPACKE_zge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
140  /* Call LAPACK function and adjust info */
141  LAPACK_zgbrfsx( &trans, &equed, &n, &kl, &ku, &nrhs, ab_t, &ldab_t,
142  afb_t, &ldafb_t, ipiv, r, c, b_t, &ldb_t, x_t, &ldx_t,
143  rcond, berr, &n_err_bnds, err_bnds_norm_t,
144  err_bnds_comp_t, &nparams, params, work, rwork, &info );
145  if( info < 0 ) {
146  info = info - 1;
147  }
148  /* Transpose output matrices */
149  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
150  LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_norm_t,
151  nrhs, err_bnds_norm, nrhs );
152  LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_comp_t,
153  nrhs, err_bnds_comp, nrhs );
154  /* Release memory and exit */
155  LAPACKE_free( err_bnds_comp_t );
156 exit_level_5:
157  LAPACKE_free( err_bnds_norm_t );
158 exit_level_4:
159  LAPACKE_free( x_t );
160 exit_level_3:
161  LAPACKE_free( b_t );
162 exit_level_2:
163  LAPACKE_free( afb_t );
164 exit_level_1:
165  LAPACKE_free( ab_t );
166 exit_level_0:
167  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
168  LAPACKE_xerbla( "LAPACKE_zgbrfsx_work", info );
169  }
170  } else {
171  info = -1;
172  LAPACKE_xerbla( "LAPACKE_zgbrfsx_work", info );
173  }
174  return info;
175 }
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
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
void LAPACKE_zgb_trans(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, 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)
void LAPACK_zgbrfsx(char *trans, char *equed, lapack_int *n, lapack_int *kl, lapack_int *ku, lapack_int *nrhs, const lapack_complex_double *ab, lapack_int *ldab, const lapack_complex_double *afb, lapack_int *ldafb, const lapack_int *ipiv, const double *r, const double *c, const lapack_complex_double *b, lapack_int *ldb, lapack_complex_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, lapack_complex_double *work, double *rwork, lapack_int *info)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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)
Here is the call graph for this function:
Here is the caller graph for this function: