LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgerfsx_work()

lapack_int LAPACKE_dgerfsx_work ( int  matrix_layout,
char  trans,
char  equed,
lapack_int  n,
lapack_int  nrhs,
const double *  a,
lapack_int  lda,
const double *  af,
lapack_int  ldaf,
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_dgerfsx_work.c.

47 {
48  lapack_int info = 0;
49  if( matrix_layout == LAPACK_COL_MAJOR ) {
50  /* Call LAPACK function and adjust info */
51  LAPACK_dgerfsx( &trans, &equed, &n, &nrhs, a, &lda, af, &ldaf, ipiv, r,
52  c, b, &ldb, x, &ldx, rcond, berr, &n_err_bnds,
53  err_bnds_norm, err_bnds_comp, &nparams, params, work,
54  iwork, &info );
55  if( info < 0 ) {
56  info = info - 1;
57  }
58  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
59  lapack_int lda_t = MAX(1,n);
60  lapack_int ldaf_t = MAX(1,n);
61  lapack_int ldb_t = MAX(1,n);
62  lapack_int ldx_t = MAX(1,n);
63  double* a_t = NULL;
64  double* af_t = NULL;
65  double* b_t = NULL;
66  double* x_t = NULL;
67  double* err_bnds_norm_t = NULL;
68  double* err_bnds_comp_t = NULL;
69  /* Check leading dimension(s) */
70  if( lda < n ) {
71  info = -7;
72  LAPACKE_xerbla( "LAPACKE_dgerfsx_work", info );
73  return info;
74  }
75  if( ldaf < n ) {
76  info = -9;
77  LAPACKE_xerbla( "LAPACKE_dgerfsx_work", info );
78  return info;
79  }
80  if( ldb < nrhs ) {
81  info = -14;
82  LAPACKE_xerbla( "LAPACKE_dgerfsx_work", info );
83  return info;
84  }
85  if( ldx < nrhs ) {
86  info = -16;
87  LAPACKE_xerbla( "LAPACKE_dgerfsx_work", info );
88  return info;
89  }
90  /* Allocate memory for temporary array(s) */
91  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
92  if( a_t == NULL ) {
94  goto exit_level_0;
95  }
96  af_t = (double*)LAPACKE_malloc( sizeof(double) * ldaf_t * MAX(1,n) );
97  if( af_t == NULL ) {
99  goto exit_level_1;
100  }
101  b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
102  if( b_t == NULL ) {
104  goto exit_level_2;
105  }
106  x_t = (double*)LAPACKE_malloc( sizeof(double) * ldx_t * MAX(1,nrhs) );
107  if( x_t == NULL ) {
109  goto exit_level_3;
110  }
111  err_bnds_norm_t = (double*)
112  LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
113  if( err_bnds_norm_t == NULL ) {
115  goto exit_level_4;
116  }
117  err_bnds_comp_t = (double*)
118  LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
119  if( err_bnds_comp_t == NULL ) {
121  goto exit_level_5;
122  }
123  /* Transpose input matrices */
124  LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
125  LAPACKE_dge_trans( matrix_layout, n, n, af, ldaf, af_t, ldaf_t );
126  LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
127  LAPACKE_dge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
128  /* Call LAPACK function and adjust info */
129  LAPACK_dgerfsx( &trans, &equed, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t,
130  ipiv, r, c, b_t, &ldb_t, x_t, &ldx_t, rcond, berr,
131  &n_err_bnds, err_bnds_norm_t, err_bnds_comp_t, &nparams,
132  params, work, iwork, &info );
133  if( info < 0 ) {
134  info = info - 1;
135  }
136  /* Transpose output matrices */
137  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
138  LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_norm_t,
139  nrhs, err_bnds_norm, nrhs );
140  LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_comp_t,
141  nrhs, err_bnds_comp, nrhs );
142  /* Release memory and exit */
143  LAPACKE_free( err_bnds_comp_t );
144 exit_level_5:
145  LAPACKE_free( err_bnds_norm_t );
146 exit_level_4:
147  LAPACKE_free( x_t );
148 exit_level_3:
149  LAPACKE_free( b_t );
150 exit_level_2:
151  LAPACKE_free( af_t );
152 exit_level_1:
153  LAPACKE_free( a_t );
154 exit_level_0:
155  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
156  LAPACKE_xerbla( "LAPACKE_dgerfsx_work", info );
157  }
158  } else {
159  info = -1;
160  LAPACKE_xerbla( "LAPACKE_dgerfsx_work", info );
161  }
162  return info;
163 }
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 MAX(x, y)
Definition: lapacke_utils.h:47
void LAPACK_dgerfsx(char *trans, char *equed, lapack_int *n, lapack_int *nrhs, const double *a, lapack_int *lda, const double *af, lapack_int *ldaf, 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 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
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