LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgesvxx_work()

lapack_int LAPACKE_dgesvxx_work ( int  matrix_layout,
char  fact,
char  trans,
lapack_int  n,
lapack_int  nrhs,
double *  a,
lapack_int  lda,
double *  af,
lapack_int  ldaf,
lapack_int ipiv,
char *  equed,
double *  r,
double *  c,
double *  b,
lapack_int  ldb,
double *  x,
lapack_int  ldx,
double *  rcond,
double *  rpvgrw,
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_dgesvxx_work.c.

47 {
48  lapack_int info = 0;
49  if( matrix_layout == LAPACK_COL_MAJOR ) {
50  /* Call LAPACK function and adjust info */
51  LAPACK_dgesvxx( &fact, &trans, &n, &nrhs, a, &lda, af, &ldaf, ipiv,
52  equed, r, c, b, &ldb, x, &ldx, rcond, rpvgrw, berr,
53  &n_err_bnds, err_bnds_norm, err_bnds_comp, &nparams,
54  params, work, 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_dgesvxx_work", info );
73  return info;
74  }
75  if( ldaf < n ) {
76  info = -9;
77  LAPACKE_xerbla( "LAPACKE_dgesvxx_work", info );
78  return info;
79  }
80  if( ldb < nrhs ) {
81  info = -15;
82  LAPACKE_xerbla( "LAPACKE_dgesvxx_work", info );
83  return info;
84  }
85  if( ldx < nrhs ) {
86  info = -17;
87  LAPACKE_xerbla( "LAPACKE_dgesvxx_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  if( LAPACKE_lsame( fact, 'f' ) ) {
126  LAPACKE_dge_trans( matrix_layout, n, n, af, ldaf, af_t, ldaf_t );
127  }
128  LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
129  /* Call LAPACK function and adjust info */
130  LAPACK_dgesvxx( &fact, &trans, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t,
131  ipiv, equed, r, c, b_t, &ldb_t, x_t, &ldx_t, rcond,
132  rpvgrw, berr, &n_err_bnds, err_bnds_norm_t,
133  err_bnds_comp_t, &nparams, params, work, iwork, &info );
134  if( info < 0 ) {
135  info = info - 1;
136  }
137  /* Transpose output matrices */
138  if( LAPACKE_lsame( fact, 'e' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
139  LAPACKE_lsame( *equed, 'c' ) || LAPACKE_lsame( *equed, 'r' ) ) ) {
140  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
141  }
142  if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
143  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, af_t, ldaf_t, af, ldaf );
144  }
145  if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
146  LAPACKE_lsame( *equed, 'c' ) || LAPACKE_lsame( *equed, 'r' ) ) ) {
147  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
148  }
149  LAPACKE_dge_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, n_err_bnds );
152  LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_comp_t,
153  nrhs, err_bnds_comp, n_err_bnds );
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( af_t );
164 exit_level_1:
165  LAPACKE_free( a_t );
166 exit_level_0:
167  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
168  LAPACKE_xerbla( "LAPACKE_dgesvxx_work", info );
169  }
170  } else {
171  info = -1;
172  LAPACKE_xerbla( "LAPACKE_dgesvxx_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 MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
void LAPACK_dgesvxx(char *fact, char *trans, lapack_int *n, lapack_int *nrhs, double *a, lapack_int *lda, double *af, lapack_int *ldaf, lapack_int *ipiv, char *equed, double *r, double *c, double *b, lapack_int *ldb, double *x, lapack_int *ldx, double *rcond, double *rpvgrw, 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)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#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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