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 DORMHR( SIDE, TRANS, M, N, ILO, IHI, A, LDA, TAU, C,
36       $                   LDC, WORK, LWORK, 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_EIG_ORMHR_H
45 #define FLENS_LAPACK_EIG_ORMHR_H 1
46 
47 #include <flens/matrixtypes/matrixtypes.h>
48 #include <flens/vectortypes/vectortypes.h>
49 
50 namespace flens { namespace lapack {
51 
52 //== ormhr =====================================================================
53 template <typename IndexType, typename  MC>
54     IndexType
55     ormhr_wsq(Side                      side,
56               Transpose                 trans,
57               IndexType                 iLo,
58               IndexType                 iHi,
59               const GeMatrix<MC>        &C);
60 
61 template <typename IndexType, typename  MA, typename  VTAU,
62           typename  MC, typename  VWORK>
63     void
64     ormhr(Side                          side,
65           Transpose                     trans,
66           IndexType                     iLo,
67           IndexType                     iHi,
68           GeMatrix<MA>                  &A,
69           const DenseVector<VTAU>       &tau,
70           GeMatrix<MC>                  &C,
71           DenseVector<VWORK>            &work);
72 
73 //-- forwarding ----------------------------------------------------------------
74 template <typename IndexType, typename  MC>
75     IndexType
76     ormhr_wsq(Side                      side,
77               Transpose                 trans,
78               IndexType                 iLo,
79               IndexType                 iHi,
80               const MC                  &&C);
81 
82 template <typename IndexType, typename  MA, typename  VTAU,
83           typename  MC, typename  VWORK>
84     void
85     ormhr(Side                          side,
86           Transpose                     trans,
87           IndexType                     iLo,
88           IndexType                     iHi,
89           MA                            &&A,
90           const VTAU                    &tau,
91           MC                            &&C,
92           VWORK                         &&work);
93 
94 } } // namespace lapack, flens
95 
96 #endif // FLENS_LAPACK_ORMHR_HD2_H