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lapacke_sgbrfsx_work.c
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1/*****************************************************************************
2 Copyright (c) 2014, Intel Corp.
3 All rights reserved.
4
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions are met:
7
8 * Redistributions of source code must retain the above copyright notice,
9 this list of conditions and the following disclaimer.
10 * Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
12 documentation and/or other materials provided with the distribution.
13 * Neither the name of Intel Corporation nor the names of its contributors
14 may be used to endorse or promote products derived from this software
15 without specific prior written permission.
16
17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27 THE POSSIBILITY OF SUCH DAMAGE.
28*****************************************************************************
29* Contents: Native middle-level C interface to LAPACK function sgbrfsx
30* Author: Intel Corporation
31*****************************************************************************/
32
33#include "lapacke_utils.h"
34
35lapack_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 );
144exit_level_5:
145 LAPACKE_free( err_bnds_norm_t );
146exit_level_4:
147 LAPACKE_free( x_t );
148exit_level_3:
149 LAPACKE_free( b_t );
150exit_level_2:
151 LAPACKE_free( afb_t );
152exit_level_1:
153 LAPACKE_free( ab_t );
154exit_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_utils.h
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
r
r
Definition schur_example.m:55
x
x
Definition schur_example.m:53
n
n
Definition schur_example.m:9