LAPACK  3.10.0
LAPACK: Linear Algebra PACKage
lapacke_sgbrfsx_work.c
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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function sgbrfsx
30 * Author: Intel Corporation
31 *****************************************************************************/
32 
33 #include "lapacke_utils.h"
34 
35 lapack_int LAPACKE_sgbrfsx_work( int matrix_layout, char trans, char equed,
36  lapack_int n, lapack_int kl, lapack_int ku,
37  lapack_int nrhs, const float* ab,
38  lapack_int ldab, const float* afb,
39  lapack_int ldafb, const lapack_int* ipiv,
40  const float* r, const float* c, const float* b,
41  lapack_int ldb, float* x, lapack_int ldx,
42  float* rcond, float* berr,
43  lapack_int n_err_bnds, float* err_bnds_norm,
44  float* err_bnds_comp, lapack_int nparams,
45  float* params, float* work, lapack_int* iwork )
46 {
47  lapack_int info = 0;
48  if( matrix_layout == LAPACK_COL_MAJOR ) {
49  /* Call LAPACK function and adjust info */
50  LAPACK_sgbrfsx( &trans, &equed, &n, &kl, &ku, &nrhs, ab, &ldab, afb,
51  &ldafb, ipiv, r, c, b, &ldb, x, &ldx, rcond, berr,
52  &n_err_bnds, err_bnds_norm, err_bnds_comp, &nparams,
53  params, work, iwork, &info );
54  if( info < 0 ) {
55  info = info - 1;
56  }
57  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
58  lapack_int ldab_t = MAX(1,kl+ku+1);
59  lapack_int ldafb_t = MAX(1,2*kl+ku+1);
60  lapack_int ldb_t = MAX(1,n);
61  lapack_int ldx_t = MAX(1,n);
62  float* ab_t = NULL;
63  float* afb_t = NULL;
64  float* b_t = NULL;
65  float* x_t = NULL;
66  float* err_bnds_norm_t = NULL;
67  float* err_bnds_comp_t = NULL;
68  /* Check leading dimension(s) */
69  if( ldab < n ) {
70  info = -9;
71  LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
72  return info;
73  }
74  if( ldafb < n ) {
75  info = -11;
76  LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
77  return info;
78  }
79  if( ldb < nrhs ) {
80  info = -16;
81  LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
82  return info;
83  }
84  if( ldx < nrhs ) {
85  info = -18;
86  LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
87  return info;
88  }
89  /* Allocate memory for temporary array(s) */
90  ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
91  if( ab_t == NULL ) {
92  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
93  goto exit_level_0;
94  }
95  afb_t = (float*)LAPACKE_malloc( sizeof(float) * ldafb_t * MAX(1,n) );
96  if( afb_t == NULL ) {
97  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
98  goto exit_level_1;
99  }
100  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
101  if( b_t == NULL ) {
102  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
103  goto exit_level_2;
104  }
105  x_t = (float*)LAPACKE_malloc( sizeof(float) * ldx_t * MAX(1,nrhs) );
106  if( x_t == NULL ) {
107  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
108  goto exit_level_3;
109  }
110  err_bnds_norm_t = (float*)
111  LAPACKE_malloc( sizeof(float) * nrhs * MAX(1,n_err_bnds) );
112  if( err_bnds_norm_t == NULL ) {
113  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
114  goto exit_level_4;
115  }
116  err_bnds_comp_t = (float*)
117  LAPACKE_malloc( sizeof(float) * nrhs * MAX(1,n_err_bnds) );
118  if( err_bnds_comp_t == NULL ) {
119  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
120  goto exit_level_5;
121  }
122  /* Transpose input matrices */
123  LAPACKE_sgb_trans( matrix_layout, n, n, kl, ku, ab, ldab, ab_t, ldab_t );
124  LAPACKE_sgb_trans( matrix_layout, n, n, kl, kl+ku, afb, ldafb, afb_t,
125  ldafb_t );
126  LAPACKE_sge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
127  LAPACKE_sge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
128  /* Call LAPACK function and adjust info */
129  LAPACK_sgbrfsx( &trans, &equed, &n, &kl, &ku, &nrhs, ab_t, &ldab_t,
130  afb_t, &ldafb_t, ipiv, r, c, b_t, &ldb_t, x_t, &ldx_t,
131  rcond, berr, &n_err_bnds, err_bnds_norm_t,
132  err_bnds_comp_t, &nparams, params, work, iwork, &info );
133  if( info < 0 ) {
134  info = info - 1;
135  }
136  /* Transpose output matrices */
137  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
138  LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_norm_t,
139  nrhs, err_bnds_norm, nrhs );
140  LAPACKE_sge_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( afb_t );
152 exit_level_1:
153  LAPACKE_free( ab_t );
154 exit_level_0:
155  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
156  LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
157  }
158  } else {
159  info = -1;
160  LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
161  }
162  return info;
163 }
lapack_int
#define lapack_int
Definition: lapack.h:83
LAPACK_sgbrfsx
#define LAPACK_sgbrfsx(...)
Definition: lapack.h:891
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:46
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
LAPACKE_sgbrfsx_work
lapack_int LAPACKE_sgbrfsx_work(int matrix_layout, char trans, char equed, lapack_int n, lapack_int kl, lapack_int ku, lapack_int nrhs, const float *ab, lapack_int ldab, const float *afb, lapack_int ldafb, const lapack_int *ipiv, const float *r, const float *c, const float *b, lapack_int ldb, 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, float *work, lapack_int *iwork)
Definition: lapacke_sgbrfsx_work.c:35
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:36
LAPACKE_sge_trans
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
Definition: lapacke_sge_trans.c:39
LAPACKE_sgb_trans
void LAPACKE_sgb_trans(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const float *in, lapack_int ldin, float *out, lapack_int ldout)
Definition: lapacke_sgb_trans.c:39
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapacke_utils.h