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lapacke_zgbsvxx_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 zgbsvxx
30* Author: Intel Corporation
31*****************************************************************************/
32
33#include "lapacke_utils.h"
34
35lapack_int LAPACKE_zgbsvxx_work( int matrix_layout, char fact, char trans,
36 lapack_int n, lapack_int kl, lapack_int ku,
37 lapack_int nrhs, lapack_complex_double* ab,
38 lapack_int ldab, lapack_complex_double* afb,
39 lapack_int ldafb, lapack_int* ipiv,
40 char* equed, double* r, double* c,
41 lapack_complex_double* b, lapack_int ldb,
42 lapack_complex_double* x, lapack_int ldx,
43 double* rcond, double* rpvgrw, double* berr,
44 lapack_int n_err_bnds, double* err_bnds_norm,
45 double* err_bnds_comp, lapack_int nparams,
46 double* params, lapack_complex_double* work,
47 double* rwork )
48{
49 lapack_int info = 0;
50 if( matrix_layout == LAPACK_COL_MAJOR ) {
51 /* Call LAPACK function and adjust info */
52 LAPACK_zgbsvxx( &fact, &trans, &n, &kl, &ku, &nrhs, ab, &ldab, afb,
53 &ldafb, ipiv, equed, r, c, b, &ldb, x, &ldx, rcond,
54 rpvgrw, berr, &n_err_bnds, err_bnds_norm, err_bnds_comp,
55 &nparams, params, work, rwork, &info );
56 if( info < 0 ) {
57 info = info - 1;
58 }
59 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
60 lapack_int ldab_t = MAX(1,kl+ku+1);
61 lapack_int ldafb_t = MAX(1,2*kl+ku+1);
62 lapack_int ldb_t = MAX(1,n);
63 lapack_int ldx_t = MAX(1,n);
64 lapack_complex_double* ab_t = NULL;
65 lapack_complex_double* afb_t = NULL;
66 lapack_complex_double* b_t = NULL;
67 lapack_complex_double* x_t = NULL;
68 double* err_bnds_norm_t = NULL;
69 double* err_bnds_comp_t = NULL;
70 /* Check leading dimension(s) */
71 if( ldab < n ) {
72 info = -9;
73 LAPACKE_xerbla( "LAPACKE_zgbsvxx_work", info );
74 return info;
75 }
76 if( ldafb < n ) {
77 info = -11;
78 LAPACKE_xerbla( "LAPACKE_zgbsvxx_work", info );
79 return info;
80 }
81 if( ldb < nrhs ) {
82 info = -17;
83 LAPACKE_xerbla( "LAPACKE_zgbsvxx_work", info );
84 return info;
85 }
86 if( ldx < nrhs ) {
87 info = -19;
88 LAPACKE_xerbla( "LAPACKE_zgbsvxx_work", info );
89 return info;
90 }
91 /* Allocate memory for temporary array(s) */
92 ab_t = (lapack_complex_double*)
93 LAPACKE_malloc( sizeof(lapack_complex_double) * ldab_t * MAX(1,n) );
94 if( ab_t == NULL ) {
95 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
96 goto exit_level_0;
97 }
98 afb_t = (lapack_complex_double*)
99 LAPACKE_malloc( sizeof(lapack_complex_double) *
100 ldafb_t * MAX(1,n) );
101 if( afb_t == NULL ) {
102 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
103 goto exit_level_1;
104 }
105 b_t = (lapack_complex_double*)
106 LAPACKE_malloc( sizeof(lapack_complex_double) *
107 ldb_t * MAX(1,nrhs) );
108 if( b_t == NULL ) {
109 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
110 goto exit_level_2;
111 }
112 x_t = (lapack_complex_double*)
113 LAPACKE_malloc( sizeof(lapack_complex_double) *
114 ldx_t * MAX(1,nrhs) );
115 if( x_t == NULL ) {
116 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
117 goto exit_level_3;
118 }
119 err_bnds_norm_t = (double*)
120 LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
121 if( err_bnds_norm_t == NULL ) {
122 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
123 goto exit_level_4;
124 }
125 err_bnds_comp_t = (double*)
126 LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
127 if( err_bnds_comp_t == NULL ) {
128 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
129 goto exit_level_5;
130 }
131 /* Transpose input matrices */
132 LAPACKE_zgb_trans( matrix_layout, n, n, kl, ku, ab, ldab, ab_t, ldab_t );
133 if( LAPACKE_lsame( fact, 'f' ) ) {
134 LAPACKE_zgb_trans( matrix_layout, n, n, kl, kl+ku, afb, ldafb, afb_t,
135 ldafb_t );
136 }
137 LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
138 /* Call LAPACK function and adjust info */
139 LAPACK_zgbsvxx( &fact, &trans, &n, &kl, &ku, &nrhs, ab_t, &ldab_t,
140 afb_t, &ldafb_t, ipiv, equed, r, c, b_t, &ldb_t, x_t,
141 &ldx_t, rcond, rpvgrw, berr, &n_err_bnds,
142 err_bnds_norm_t, err_bnds_comp_t, &nparams, params,
143 work, rwork, &info );
144 if( info < 0 ) {
145 info = info - 1;
146 }
147 /* Transpose output matrices */
148 if( LAPACKE_lsame( fact, 'e' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
149 LAPACKE_lsame( *equed, 'c' ) || LAPACKE_lsame( *equed, 'r' ) ) ) {
150 LAPACKE_zgb_trans( LAPACK_COL_MAJOR, n, n, kl, ku, ab_t, ldab_t, ab,
151 ldab );
152 }
153 if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
154 LAPACKE_zgb_trans( LAPACK_COL_MAJOR, n, n, kl, kl+ku, afb_t,
155 ldafb_t, afb, ldafb );
156 }
157 if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
158 LAPACKE_lsame( *equed, 'c' ) || LAPACKE_lsame( *equed, 'r' ) ) ) {
159 LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
160 }
161 LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
162 LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_norm_t,
163 nrhs, err_bnds_norm, n_err_bnds );
164 LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_comp_t,
165 nrhs, err_bnds_comp, n_err_bnds );
166 /* Release memory and exit */
167 LAPACKE_free( err_bnds_comp_t );
168exit_level_5:
169 LAPACKE_free( err_bnds_norm_t );
170exit_level_4:
171 LAPACKE_free( x_t );
172exit_level_3:
173 LAPACKE_free( b_t );
174exit_level_2:
175 LAPACKE_free( afb_t );
176exit_level_1:
177 LAPACKE_free( ab_t );
178exit_level_0:
179 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
180 LAPACKE_xerbla( "LAPACKE_zgbsvxx_work", info );
181 }
182 } else {
183 info = -1;
184 LAPACKE_xerbla( "LAPACKE_zgbsvxx_work", info );
185 }
186 return info;
187}
lapack_int
#define lapack_int
Definition lapack.h:83
lapack_complex_double
#define lapack_complex_double
Definition lapack.h:63
LAPACK_zgbsvxx
#define LAPACK_zgbsvxx(...)
Definition lapack.h:1175
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_utils.h
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition lapacke_lsame.c:35
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition lapacke_xerbla.c:36
LAPACKE_zge_trans
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)
Definition lapacke_zge_trans.c:39
LAPACKE_zgb_trans
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)
Definition lapacke_zgb_trans.c:39
MAX
#define MAX(x, y)
Definition lapacke_utils.h:46
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
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 lapacke_zgbsvxx_work.c:35
r
r
Definition schur_example.m:55
x
x
Definition schur_example.m:53
n
n
Definition schur_example.m:9