1 /*
 2  *   Copyright (c) 2011, Michael Lehn
 3  *
 4  *   All rights reserved.
 5  *
 6  *   Redistribution and use in source and binary forms, with or without
 7  *   modification, are permitted provided that the following conditions
 8  *   are met:
 9  *
10  *   1) Redistributions of source code must retain the above copyright
11  *      notice, this list of conditions and the following disclaimer.
12  *   2) Redistributions in binary form must reproduce the above copyright
13  *      notice, this list of conditions and the following disclaimer in
14  *      the documentation and/or other materials provided with the
15  *      distribution.
16  *   3) Neither the name of the FLENS development group nor the names of
17  *      its contributors may be used to endorse or promote products derived
18  *      from this software without specific prior written permission.
19  *
20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 /* Based on
34  *
35        SUBROUTINE DGERFS( TRANS, N, NRHS, A, LDA, AF, LDAF, IPIV, B, LDB,
36       $                   X, LDX, FERR, BERR, WORK, IWORK, INFO )
37  *
38  *  -- LAPACK routine (version 3.2) --
39  *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
40  *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
41  *     November 2006
42  */
43 
44 #ifndef FLENS_LAPACK_GESV_RFS_H
45 #define FLENS_LAPACK_GESV_RFS_H 1
46 
47 #include <flens/lapack/typedefs.h>
48 #include <flens/matrixtypes/matrixtypes.h>
49 #include <flens/vectortypes/vectortypes.h>
50 
51 namespace flens { namespace lapack {
52 
53 //== (ge)rfs ===================================================================
54 template <typename MA, typename MAF, typename VPIV, typename MB, typename MX,
55           typename VFERR, typename VBERR, typename VWORK, typename VIWORK>
56     void
57     rfs(Transpose               trans,
58         const GeMatrix<MA>      &A,
59         const GeMatrix<MAF>     &AF,
60         const DenseVector<VPIV> &piv,
61         const GeMatrix<MB>      &B,
62         GeMatrix<MX>            &X,
63         DenseVector<VFERR>      &fErr,
64         DenseVector<VBERR>      &bErr,
65         DenseVector<VWORK>      &work,
66         DenseVector<VIWORK>     &iwork);
67 
68 //-- forwarding ----------------------------------------------------------------
69 template <typename MA, typename MAF, typename VPIV, typename MB, typename MX,
70           typename VFERR, typename VBERR, typename VWORK, typename VIWORK>
71     void
72     rfs(Transpose    trans,
73         const MA     &A,
74         const MAF    &AF,
75         const VPIV   &piv,
76         const MB     &B,
77         MX           &&X,
78         VFERR        &&fErr,
79         VBERR        &&bErr,
80         VWORK        &&work,
81         VIWORK       &&iwork);
82 
83 } } // namespace lapack, flens
84 
85 #endif // FLENS_LAPACK_GESV_RFS_H