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 DGEHRD( N, ILO, IHI, A, LDA, TAU, WORK, LWORK, INFO )
36 *
37 * -- LAPACK routine (version 3.3.1) --
38 * -- LAPACK is a software package provided by Univ. of Tennessee, --
39 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
40 * -- April 2009 --
41 */
42
43 #ifndef FLENS_LAPACK_EIG_HRD_H
44 #define FLENS_LAPACK_EIG_HRD_H 1
45
46 #include <flens/matrixtypes/matrixtypes.h>
47 #include <flens/vectortypes/vectortypes.h>
48
49 namespace flens { namespace lapack {
50
51 //== hrd =======================================================================
52 template <typename IndexType, typename MA>
53 IndexType
54 hrd_wsq(IndexType iLo,
55 IndexType iHi,
56 const GeMatrix<MA> &A);
57
58 template <typename IndexType, typename MA, typename VTAU, typename VWORK>
59 void
60 hrd(IndexType iLo,
61 IndexType iHi,
62 GeMatrix<MA> &A,
63 DenseVector<VTAU> &tau,
64 DenseVector<VWORK> &work);
65
66
67 //-- forwarding ----------------------------------------------------------------
68 template <typename IndexType, typename MA>
69 IndexType
70 hrd_wsq(IndexType iLo,
71 IndexType iHi,
72 const MA &&A);
73
74 template <typename IndexType, typename MA, typename VTAU, typename VWORK>
75 void
76 hrd(IndexType iLo,
77 IndexType iHi,
78 MA &&A,
79 VTAU &&tau,
80 VWORK &&work);
81
82 } } // namespace lapack, flens
83
84 #endif // FLENS_LAPACK_EIG_HRD_H
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 DGEHRD( N, ILO, IHI, A, LDA, TAU, WORK, LWORK, INFO )
36 *
37 * -- LAPACK routine (version 3.3.1) --
38 * -- LAPACK is a software package provided by Univ. of Tennessee, --
39 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
40 * -- April 2009 --
41 */
42
43 #ifndef FLENS_LAPACK_EIG_HRD_H
44 #define FLENS_LAPACK_EIG_HRD_H 1
45
46 #include <flens/matrixtypes/matrixtypes.h>
47 #include <flens/vectortypes/vectortypes.h>
48
49 namespace flens { namespace lapack {
50
51 //== hrd =======================================================================
52 template <typename IndexType, typename MA>
53 IndexType
54 hrd_wsq(IndexType iLo,
55 IndexType iHi,
56 const GeMatrix<MA> &A);
57
58 template <typename IndexType, typename MA, typename VTAU, typename VWORK>
59 void
60 hrd(IndexType iLo,
61 IndexType iHi,
62 GeMatrix<MA> &A,
63 DenseVector<VTAU> &tau,
64 DenseVector<VWORK> &work);
65
66
67 //-- forwarding ----------------------------------------------------------------
68 template <typename IndexType, typename MA>
69 IndexType
70 hrd_wsq(IndexType iLo,
71 IndexType iHi,
72 const MA &&A);
73
74 template <typename IndexType, typename MA, typename VTAU, typename VWORK>
75 void
76 hrd(IndexType iLo,
77 IndexType iHi,
78 MA &&A,
79 VTAU &&tau,
80 VWORK &&work);
81
82 } } // namespace lapack, flens
83
84 #endif // FLENS_LAPACK_EIG_HRD_H