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/*
* Copyright (c) 2010, 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.
*/
#ifndef FLENS_BLAS_CLOSURES_PRUNEMATRIXCLOSURE_TCC
#define FLENS_BLAS_CLOSURES_PRUNEMATRIXCLOSURE_TCC 1
#include <flens/auxiliary/auxiliary.h>
#include <flens/blas/closures/auxiliary/prunematrixclosure.h>
#include <flens/typedefs.h>
namespace flens {
//-- General definition --------------------------------------------------------
template <typename Matrix>
template <typename ALPHA>
const ALPHA &
PruneMatrixClosure<Matrix>::updateScalingFactor(const ALPHA &alpha,
const Matrix &)
{
return alpha;
}
template <typename Matrix>
Transpose
PruneMatrixClosure<Matrix>::updateTranspose(Transpose trans)
{
return trans;
}
template <typename Matrix>
typename ConstRef<typename PruneMatrixClosure<Matrix>::Remainder>::Type
PruneMatrixClosure<Matrix>::remainder(const Matrix &matrix)
{
return matrix;
}
//-- Specialization for particular closures ------------------------------------
//-- Closure from alpha*A
template <typename L, typename R>
struct PruneMatrixClosure<MatrixClosure<OpMult, ScalarValue<L>, R> >
{
typedef MatrixClosure<OpMult, ScalarValue<L>, R> MC;
typedef typename PruneMatrixClosure<R>::ScalingFactor _ScalingFactor;
typedef typename Promotion<L, _ScalingFactor>::Type ScalingFactor;
typedef typename PruneMatrixClosure<R>::Remainder Remainder;
template <typename ALPHA>
static const typename Promotion<ALPHA, ScalingFactor>::Type
updateScalingFactor(const ALPHA &alpha, const MC &mc)
{
typedef PruneMatrixClosure<R> PMC;
return PMC::updateScalingFactor(alpha*mc.left().value(), mc.right());
}
static Transpose
updateTranspose(Transpose trans)
{
return PruneMatrixClosure<R>::updateTranspose(trans);
}
static typename ConstRef<Remainder>::Type
remainder(const MC &mc)
{
return PruneMatrixClosure<R>::remainder(mc.right());
}
};
//-- Closure from transpose(A)
template <typename R>
struct PruneMatrixClosure<MatrixClosure<OpTrans, R, R> >
{
typedef MatrixClosure<OpTrans, R, R> MC;
typedef typename PruneMatrixClosure<R>::ScalingFactor ScalingFactor;
typedef typename PruneMatrixClosure<R>::Remainder Remainder;
template <typename ALPHA>
static const typename Promotion<ALPHA, ScalingFactor>::Type
updateScalingFactor(const ALPHA &alpha, const MC &mc)
{
return PruneMatrixClosure<R>::updateScalingFactor(alpha, mc.right());
}
static Transpose
updateTranspose(Transpose trans)
{
trans = PruneMatrixClosure<R>::updateTranspose(trans);
return Transpose(trans^Trans);
}
static typename ConstRef<Remainder>::Type
remainder(const MC &mc)
{
return PruneMatrixClosure<R>::remainder(mc.right());
}
};
//-- Closure from conjugate(A)
template <typename R>
struct PruneMatrixClosure<MatrixClosure<OpConj, R, R> >
{
typedef MatrixClosure<OpConj, R, R> MC;
typedef typename PruneMatrixClosure<R>::ScalingFactor ScalingFactor;
typedef typename PruneMatrixClosure<R>::Remainder Remainder;
template <typename ALPHA>
static const typename Promotion<ALPHA, ScalingFactor>::Type
updateScalingFactor(const ALPHA &alpha, const MC &mc)
{
return PruneMatrixClosure<R>::updateScalingFactor(alpha, mc.right());
}
static Transpose
updateTranspose(Transpose trans)
{
trans = PruneMatrixClosure<R>::updateTranspose(trans);
return Transpose(trans^Conj);
}
static typename ConstRef<Remainder>::Type
remainder(const MC &mc)
{
return PruneMatrixClosure<R>::remainder(mc.right());
}
};
} // namespace flens
#endif // FLENS_BLAS_CLOSURES_PRUNEMATRIXCLOSURE_TCC
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