ormhr.h (flens/lapack/impl/ormhr.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 DORMHR( SIDE, TRANS, M, N, ILO, IHI, A, LDA, TAU, C,
      $                   LDC, WORK, LWORK, INFO )
*
*  -- LAPACK routine (version 3.2) --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*     November 2006
*/

#ifndef FLENS_LAPACK_IMPL_ORMHR_H
#define FLENS_LAPACK_IMPL_ORMHR_H 1

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

namespace flens { namespace lapack {

//== ormhr =====================================================================
template <typename IndexType, typename  MC>
    IndexType
    ormhr_wsq(Side                      side,
              Transpose                 trans,
              IndexType                 iLo,
              IndexType                 iHi,
              const GeMatrix<MC>        &C);

template <typename IndexType, typename  MA, typename  VTAU,
          typename  MC, typename  VWORK>
    void
    ormhr(Side                          side,
          Transpose                     trans,
          IndexType                     iLo,
          IndexType                     iHi,
          GeMatrix<MA>                  &A,
          const DenseVector<VTAU>       &tau,
          GeMatrix<MC>                  &C,
          DenseVector<VWORK>            &work);

//-- forwarding ----------------------------------------------------------------
template <typename IndexType, typename  MC>
    IndexType
    ormhr_wsq(Side                      side,
              Transpose                 trans,
              IndexType                 iLo,
              IndexType                 iHi,
              const MC                  &&C);

template <typename IndexType, typename  MA, typename  VTAU,
          typename  MC, typename  VWORK>
    void
    ormhr(Side                          side,
          Transpose                     trans,
          IndexType                     iLo,
          IndexType                     iHi,
          MA                            &&A,
          const VTAU                    &tau,
          MC                            &&C,
          VWORK                         &&work);

} } // namespace lapack, flens

#endif // FLENS_LAPACK_IMPL_ORMHR_H