LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cgbrfsx_work()

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

Definition at line 36 of file lapacke_cgbrfsx_work.c.

51 {
52  lapack_int info = 0;
53  if( matrix_layout == LAPACK_COL_MAJOR ) {
54  /* Call LAPACK function and adjust info */
55  LAPACK_cgbrfsx( &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_float* ab_t = NULL;
68  lapack_complex_float* afb_t = NULL;
69  lapack_complex_float* b_t = NULL;
70  lapack_complex_float* x_t = NULL;
71  float* err_bnds_norm_t = NULL;
72  float* err_bnds_comp_t = NULL;
73  /* Check leading dimension(s) */
74  if( ldab < n ) {
75  info = -9;
76  LAPACKE_xerbla( "LAPACKE_cgbrfsx_work", info );
77  return info;
78  }
79  if( ldafb < n ) {
80  info = -11;
81  LAPACKE_xerbla( "LAPACKE_cgbrfsx_work", info );
82  return info;
83  }
84  if( ldb < nrhs ) {
85  info = -16;
86  LAPACKE_xerbla( "LAPACKE_cgbrfsx_work", info );
87  return info;
88  }
89  if( ldx < nrhs ) {
90  info = -18;
91  LAPACKE_xerbla( "LAPACKE_cgbrfsx_work", info );
92  return info;
93  }
94  /* Allocate memory for temporary array(s) */
95  ab_t = (lapack_complex_float*)
96  LAPACKE_malloc( sizeof(lapack_complex_float) * ldab_t * MAX(1,n) );
97  if( ab_t == NULL ) {
99  goto exit_level_0;
100  }
101  afb_t = (lapack_complex_float*)
102  LAPACKE_malloc( sizeof(lapack_complex_float) * ldafb_t * MAX(1,n) );
103  if( afb_t == NULL ) {
105  goto exit_level_1;
106  }
107  b_t = (lapack_complex_float*)
109  ldb_t * MAX(1,nrhs) );
110  if( b_t == NULL ) {
112  goto exit_level_2;
113  }
114  x_t = (lapack_complex_float*)
116  ldx_t * MAX(1,nrhs) );
117  if( x_t == NULL ) {
119  goto exit_level_3;
120  }
121  err_bnds_norm_t = (float*)
122  LAPACKE_malloc( sizeof(float) * nrhs * MAX(1,n_err_bnds) );
123  if( err_bnds_norm_t == NULL ) {
125  goto exit_level_4;
126  }
127  err_bnds_comp_t = (float*)
128  LAPACKE_malloc( sizeof(float) * nrhs * MAX(1,n_err_bnds) );
129  if( err_bnds_comp_t == NULL ) {
131  goto exit_level_5;
132  }
133  /* Transpose input matrices */
134  LAPACKE_cgb_trans( matrix_layout, n, n, kl, ku, ab, ldab, ab_t, ldab_t );
135  LAPACKE_cgb_trans( matrix_layout, n, n, kl, kl+ku, afb, ldafb, afb_t,
136  ldafb_t );
137  LAPACKE_cge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
138  LAPACKE_cge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
139  /* Call LAPACK function and adjust info */
140  LAPACK_cgbrfsx( &trans, &equed, &n, &kl, &ku, &nrhs, ab_t, &ldab_t,
141  afb_t, &ldafb_t, ipiv, r, c, b_t, &ldb_t, x_t, &ldx_t,
142  rcond, berr, &n_err_bnds, err_bnds_norm_t,
143  err_bnds_comp_t, &nparams, params, work, rwork, &info );
144  if( info < 0 ) {
145  info = info - 1;
146  }
147  /* Transpose output matrices */
148  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
149  LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_norm_t,
150  nrhs, err_bnds_norm, nrhs );
151  LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_comp_t,
152  nrhs, err_bnds_comp, nrhs );
153  /* Release memory and exit */
154  LAPACKE_free( err_bnds_comp_t );
155 exit_level_5:
156  LAPACKE_free( err_bnds_norm_t );
157 exit_level_4:
158  LAPACKE_free( x_t );
159 exit_level_3:
160  LAPACKE_free( b_t );
161 exit_level_2:
162  LAPACKE_free( afb_t );
163 exit_level_1:
164  LAPACKE_free( ab_t );
165 exit_level_0:
166  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
167  LAPACKE_xerbla( "LAPACKE_cgbrfsx_work", info );
168  }
169  } else {
170  info = -1;
171  LAPACKE_xerbla( "LAPACKE_cgbrfsx_work", info );
172  }
173  return info;
174 }
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)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_float
Definition: lapacke.h:74
void LAPACKE_cgb_trans(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
void LAPACK_cgbrfsx(char *trans, char *equed, lapack_int *n, lapack_int *kl, lapack_int *ku, lapack_int *nrhs, const lapack_complex_float *ab, lapack_int *ldab, const lapack_complex_float *afb, lapack_int *ldafb, const lapack_int *ipiv, const float *r, const float *c, const lapack_complex_float *b, lapack_int *ldb, lapack_complex_float *x, lapack_int *ldx, float *rcond, float *berr, lapack_int *n_err_bnds, float *err_bnds_norm, float *err_bnds_comp, lapack_int *nparams, float *params, lapack_complex_float *work, float *rwork, lapack_int *info)
#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
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