LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ 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 at line 36 of file lapacke_sgbrfsx_work.c.

47 {
48  lapack_int info = 0;
49  if( matrix_layout == LAPACK_COL_MAJOR ) {
50  /* Call LAPACK function and adjust info */
51  LAPACK_sgbrfsx( &trans, &equed, &n, &kl, &ku, &nrhs, ab, &ldab, afb,
52  &ldafb, ipiv, r, c, b, &ldb, x, &ldx, rcond, 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 ldab_t = MAX(1,kl+ku+1);
60  lapack_int ldafb_t = MAX(1,2*kl+ku+1);
61  lapack_int ldb_t = MAX(1,n);
62  lapack_int ldx_t = MAX(1,n);
63  float* ab_t = NULL;
64  float* afb_t = NULL;
65  float* b_t = NULL;
66  float* x_t = NULL;
67  float* err_bnds_norm_t = NULL;
68  float* err_bnds_comp_t = NULL;
69  /* Check leading dimension(s) */
70  if( ldab < n ) {
71  info = -9;
72  LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
73  return info;
74  }
75  if( ldafb < n ) {
76  info = -11;
77  LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
78  return info;
79  }
80  if( ldb < nrhs ) {
81  info = -16;
82  LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
83  return info;
84  }
85  if( ldx < nrhs ) {
86  info = -18;
87  LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
88  return info;
89  }
90  /* Allocate memory for temporary array(s) */
91  ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
92  if( ab_t == NULL ) {
94  goto exit_level_0;
95  }
96  afb_t = (float*)LAPACKE_malloc( sizeof(float) * ldafb_t * MAX(1,n) );
97  if( afb_t == NULL ) {
99  goto exit_level_1;
100  }
101  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
102  if( b_t == NULL ) {
104  goto exit_level_2;
105  }
106  x_t = (float*)LAPACKE_malloc( sizeof(float) * ldx_t * MAX(1,nrhs) );
107  if( x_t == NULL ) {
109  goto exit_level_3;
110  }
111  err_bnds_norm_t = (float*)
112  LAPACKE_malloc( sizeof(float) * nrhs * MAX(1,n_err_bnds) );
113  if( err_bnds_norm_t == NULL ) {
115  goto exit_level_4;
116  }
117  err_bnds_comp_t = (float*)
118  LAPACKE_malloc( sizeof(float) * 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_sgb_trans( matrix_layout, n, n, kl, ku, ab, ldab, ab_t, ldab_t );
125  LAPACKE_sgb_trans( matrix_layout, n, n, kl, kl+ku, afb, ldafb, afb_t,
126  ldafb_t );
127  LAPACKE_sge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
128  LAPACKE_sge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
129  /* Call LAPACK function and adjust info */
130  LAPACK_sgbrfsx( &trans, &equed, &n, &kl, &ku, &nrhs, ab_t, &ldab_t,
131  afb_t, &ldafb_t, ipiv, r, c, b_t, &ldb_t, x_t, &ldx_t,
132  rcond, 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  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
139  LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_norm_t,
140  nrhs, err_bnds_norm, nrhs );
141  LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_comp_t,
142  nrhs, err_bnds_comp, nrhs );
143  /* Release memory and exit */
144  LAPACKE_free( err_bnds_comp_t );
145 exit_level_5:
146  LAPACKE_free( err_bnds_norm_t );
147 exit_level_4:
148  LAPACKE_free( x_t );
149 exit_level_3:
150  LAPACKE_free( b_t );
151 exit_level_2:
152  LAPACKE_free( afb_t );
153 exit_level_1:
154  LAPACKE_free( ab_t );
155 exit_level_0:
156  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
157  LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
158  }
159  } else {
160  info = -1;
161  LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
162  }
163  return info;
164 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_sgbrfsx(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, lapack_int *info)
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
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
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)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
Here is the call graph for this function:
Here is the caller graph for this function: