LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgbsvxx_work()

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

Definition at line 36 of file lapacke_zgbsvxx_work.c.

49 {
50  lapack_int info = 0;
51  if( matrix_layout == LAPACK_COL_MAJOR ) {
52  /* Call LAPACK function and adjust info */
53  LAPACK_zgbsvxx( &fact, &trans, &n, &kl, &ku, &nrhs, ab, &ldab, afb,
54  &ldafb, ipiv, equed, r, c, b, &ldb, x, &ldx, rcond,
55  rpvgrw, berr, &n_err_bnds, err_bnds_norm, err_bnds_comp,
56  &nparams, params, work, rwork, &info );
57  if( info < 0 ) {
58  info = info - 1;
59  }
60  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
61  lapack_int ldab_t = MAX(1,kl+ku+1);
62  lapack_int ldafb_t = MAX(1,2*kl+ku+1);
63  lapack_int ldb_t = MAX(1,n);
64  lapack_int ldx_t = MAX(1,n);
65  lapack_complex_double* ab_t = NULL;
66  lapack_complex_double* afb_t = NULL;
67  lapack_complex_double* b_t = NULL;
68  lapack_complex_double* x_t = NULL;
69  double* err_bnds_norm_t = NULL;
70  double* err_bnds_comp_t = NULL;
71  /* Check leading dimension(s) */
72  if( ldab < n ) {
73  info = -9;
74  LAPACKE_xerbla( "LAPACKE_zgbsvxx_work", info );
75  return info;
76  }
77  if( ldafb < n ) {
78  info = -11;
79  LAPACKE_xerbla( "LAPACKE_zgbsvxx_work", info );
80  return info;
81  }
82  if( ldb < nrhs ) {
83  info = -17;
84  LAPACKE_xerbla( "LAPACKE_zgbsvxx_work", info );
85  return info;
86  }
87  if( ldx < nrhs ) {
88  info = -19;
89  LAPACKE_xerbla( "LAPACKE_zgbsvxx_work", info );
90  return info;
91  }
92  /* Allocate memory for temporary array(s) */
93  ab_t = (lapack_complex_double*)
94  LAPACKE_malloc( sizeof(lapack_complex_double) * ldab_t * MAX(1,n) );
95  if( ab_t == NULL ) {
97  goto exit_level_0;
98  }
99  afb_t = (lapack_complex_double*)
101  ldafb_t * MAX(1,n) );
102  if( afb_t == NULL ) {
104  goto exit_level_1;
105  }
106  b_t = (lapack_complex_double*)
108  ldb_t * MAX(1,nrhs) );
109  if( b_t == NULL ) {
111  goto exit_level_2;
112  }
113  x_t = (lapack_complex_double*)
115  ldx_t * MAX(1,nrhs) );
116  if( x_t == NULL ) {
118  goto exit_level_3;
119  }
120  err_bnds_norm_t = (double*)
121  LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
122  if( err_bnds_norm_t == NULL ) {
124  goto exit_level_4;
125  }
126  err_bnds_comp_t = (double*)
127  LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
128  if( err_bnds_comp_t == NULL ) {
130  goto exit_level_5;
131  }
132  /* Transpose input matrices */
133  LAPACKE_zgb_trans( matrix_layout, n, n, kl, ku, ab, ldab, ab_t, ldab_t );
134  if( LAPACKE_lsame( fact, 'f' ) ) {
135  LAPACKE_zgb_trans( matrix_layout, n, n, kl, kl+ku, afb, ldafb, afb_t,
136  ldafb_t );
137  }
138  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
139  /* Call LAPACK function and adjust info */
140  LAPACK_zgbsvxx( &fact, &trans, &n, &kl, &ku, &nrhs, ab_t, &ldab_t,
141  afb_t, &ldafb_t, ipiv, equed, r, c, b_t, &ldb_t, x_t,
142  &ldx_t, rcond, rpvgrw, berr, &n_err_bnds,
143  err_bnds_norm_t, err_bnds_comp_t, &nparams, params,
144  work, rwork, &info );
145  if( info < 0 ) {
146  info = info - 1;
147  }
148  /* Transpose output matrices */
149  if( LAPACKE_lsame( fact, 'e' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
150  LAPACKE_lsame( *equed, 'c' ) || LAPACKE_lsame( *equed, 'r' ) ) ) {
151  LAPACKE_zgb_trans( LAPACK_COL_MAJOR, n, n, kl, ku, ab_t, ldab_t, ab,
152  ldab );
153  }
154  if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
155  LAPACKE_zgb_trans( LAPACK_COL_MAJOR, n, n, kl, kl+ku, afb_t,
156  ldafb_t, afb, ldafb );
157  }
158  if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
159  LAPACKE_lsame( *equed, 'c' ) || LAPACKE_lsame( *equed, 'r' ) ) ) {
160  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
161  }
162  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
163  LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_norm_t,
164  nrhs, err_bnds_norm, n_err_bnds );
165  LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_comp_t,
166  nrhs, err_bnds_comp, n_err_bnds );
167  /* Release memory and exit */
168  LAPACKE_free( err_bnds_comp_t );
169 exit_level_5:
170  LAPACKE_free( err_bnds_norm_t );
171 exit_level_4:
172  LAPACKE_free( x_t );
173 exit_level_3:
174  LAPACKE_free( b_t );
175 exit_level_2:
176  LAPACKE_free( afb_t );
177 exit_level_1:
178  LAPACKE_free( ab_t );
179 exit_level_0:
180  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
181  LAPACKE_xerbla( "LAPACKE_zgbsvxx_work", info );
182  }
183  } else {
184  info = -1;
185  LAPACKE_xerbla( "LAPACKE_zgbsvxx_work", info );
186  }
187  return info;
188 }
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
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
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)
void LAPACK_zgbsvxx(char *fact, char *trans, lapack_int *n, lapack_int *kl, lapack_int *ku, lapack_int *nrhs, lapack_complex_double *ab, lapack_int *ldab, lapack_complex_double *afb, lapack_int *ldafb, lapack_int *ipiv, char *equed, double *r, double *c, lapack_complex_double *b, lapack_int *ldb, lapack_complex_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, lapack_complex_double *work, double *rwork, lapack_int *info)
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