laqr3.h (flens/lapack/la/laqr3.h)

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/*
*   Copyright (c) 2011, Michael Lehn
*
*   All rights reserved.
*
*   Redistribution and use in source and binary forms, with or without
*   modification, are permitted provided that the following conditions
*   are met:
*
*   1) Redistributions of source code must retain the above copyright
*      notice, this list of conditions and the following disclaimer.
*   2) Redistributions in binary form must reproduce the above copyright
*      notice, this list of conditions and the following disclaimer in
*      the documentation and/or other materials provided with the
*      distribution.
*   3) Neither the name of the FLENS development group nor the names of
*      its contributors may be used to endorse or promote products derived
*      from this software without specific prior written permission.
*
*   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
*   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
*   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
*   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
*   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
*   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
*   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
*   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
*   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
*   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
*   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/* Based on
*
      SUBROUTINE DLAQR3( WANTT, WANTZ, N, KTOP, KBOT, NW, H, LDH, ILOZ,
     $                   IHIZ, Z, LDZ, NS, ND, SR, SI, V, LDV, NH, T,
     $                   LDT, NV, WV, LDWV, WORK, LWORK )
*
*  -- LAPACK auxiliary routine (version 3.2.2)                        --
*     Univ. of Tennessee, Univ. of California Berkeley,
*     Univ. of Colorado Denver and NAG Ltd..
*  -- June 2010                                                       --
*
*/

#ifndef FLENS_LAPACK_LA_LAQR3_H
#define FLENS_LAPACK_LA_LAQR3_H 1

#include <flens/matrixtypes/matrixtypes.h>
#include <flens/vectortypes/vectortypes.h>

namespace flens { namespace lapack {

//== laqr3 =====================================================================
template <typename IndexType, typename MT>
    IndexType
    laqr3_wsq(IndexType                 kTop,
              IndexType                 kBot,
              IndexType                 nw,
              const GeMatrix<MT>        &T);

template <typename IndexType, typename MH, typename MZ, typename VSR,
          typename VSI, typename MV, typename MT, typename MWV, typename VWORK>
    void
    laqr3(bool                      wantT,
          bool                      wantZ,
          IndexType                 kTop,
          IndexType                 kBot,
          IndexType                 nw,
          GeMatrix<MH>              &H,
          IndexType                 iLoZ,
          IndexType                 iHiZ,
          GeMatrix<MZ>              &Z,
          IndexType                 &ns,
          IndexType                 &nd,
          DenseVector<VSR>          &sr,
          DenseVector<VSI>          &si,
          GeMatrix<MV>              &V,
          GeMatrix<MT>              &T,
          GeMatrix<MWV>             &WV,
          DenseVector<VWORK>        &work);

//-- forwarding ----------------------------------------------------------------
template <typename IndexType, typename MT>
    IndexType
    laqr3_wsq(IndexType                 kTop,
              IndexType                 kBot,
              IndexType                 nw,
              const MT                  &&T);

template <typename IndexType, typename MH, typename MZ, typename VSR,
          typename VSI, typename MV, typename MT, typename MWV, typename VWORK>
    void
    laqr3(bool                      wantT,
          bool                      wantZ,
          IndexType                 kTop,
          IndexType                 kBot,
          IndexType                 nw,
          MH                        &&H,
          IndexType                 iLoZ,
          IndexType                 iHiZ,
          MZ                        &&Z,
          IndexType                 &ns,
          IndexType                 &nd,
          VSR                       &&sr,
          VSI                       &&si,
          MV                        &&V,
          MT                        &&T,
          MWV                       &&WV,
          VWORK                     &&work);

} } // namespace lapack, flens

#endif // FLENS_LAPACK_LA_LAQR3_H