LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dgbrfsx_work()

lapack_int LAPACKE_dgbrfsx_work ( int  matrix_layout,
char  trans,
char  equed,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
lapack_int  nrhs,
const double *  ab,
lapack_int  ldab,
const double *  afb,
lapack_int  ldafb,
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 35 of file lapacke_dgbrfsx_work.c.

47{
48 lapack_int info = 0;
49 if( matrix_layout == LAPACK_COL_MAJOR ) {
50 /* Call LAPACK function and adjust info */
51 LAPACK_dgbrfsx( &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 double* ab_t = NULL;
64 double* afb_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( ldab < n ) {
71 info = -9;
72 LAPACKE_xerbla( "LAPACKE_dgbrfsx_work", info );
73 return info;
74 }
75 if( ldafb < n ) {
76 info = -11;
77 LAPACKE_xerbla( "LAPACKE_dgbrfsx_work", info );
78 return info;
79 }
80 if( ldb < nrhs ) {
81 info = -16;
82 LAPACKE_xerbla( "LAPACKE_dgbrfsx_work", info );
83 return info;
84 }
85 if( ldx < nrhs ) {
86 info = -18;
87 LAPACKE_xerbla( "LAPACKE_dgbrfsx_work", info );
88 return info;
89 }
90 /* Allocate memory for temporary array(s) */
91 ab_t = (double*)LAPACKE_malloc( sizeof(double) * ldab_t * MAX(1,n) );
92 if( ab_t == NULL ) {
93 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
94 goto exit_level_0;
95 }
96 afb_t = (double*)LAPACKE_malloc( sizeof(double) * ldafb_t * MAX(1,n) );
97 if( afb_t == NULL ) {
98 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
99 goto exit_level_1;
100 }
101 b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
102 if( b_t == NULL ) {
103 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
104 goto exit_level_2;
105 }
106 x_t = (double*)LAPACKE_malloc( sizeof(double) * ldx_t * MAX(1,nrhs) );
107 if( x_t == NULL ) {
108 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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 ) {
114 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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 ) {
120 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
121 goto exit_level_5;
122 }
123 /* Transpose input matrices */
124 LAPACKE_dgb_trans( matrix_layout, n, n, kl, ku, ab, ldab, ab_t, ldab_t );
125 LAPACKE_dgb_trans( matrix_layout, n, n, kl, kl+ku, afb, ldafb, afb_t,
126 ldafb_t );
127 LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
128 LAPACKE_dge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
129 /* Call LAPACK function and adjust info */
130 LAPACK_dgbrfsx( &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_dge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
139 LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_norm_t,
140 nrhs, err_bnds_norm, nrhs );
141 LAPACKE_dge_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 );
145exit_level_5:
146 LAPACKE_free( err_bnds_norm_t );
147exit_level_4:
148 LAPACKE_free( x_t );
149exit_level_3:
150 LAPACKE_free( b_t );
151exit_level_2:
152 LAPACKE_free( afb_t );
153exit_level_1:
154 LAPACKE_free( ab_t );
155exit_level_0:
156 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
157 LAPACKE_xerbla( "LAPACKE_dgbrfsx_work", info );
158 }
159 } else {
160 info = -1;
161 LAPACKE_xerbla( "LAPACKE_dgbrfsx_work", info );
162 }
163 return info;
164}
lapack_int
#define lapack_int
Definition: lapack.h:87
LAPACK_dgbrfsx
#define LAPACK_dgbrfsx(...)
Definition: lapack.h:879
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_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:36
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
LAPACKE_dgb_trans
void LAPACKE_dgb_trans(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const double *in, lapack_int ldin, double *out, lapack_int ldout)
Definition: lapacke_dgb_trans.c:39
LAPACKE_dge_trans
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
Definition: lapacke_dge_trans.c:39
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