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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_SCALAROPERATIONS_PLUS_H
#define FLENS_SCALAROPERATIONS_PLUS_H 1

#include <flens/auxiliary/auxiliary.h>
#include <flens/scalartypes/scalartypes.h>

namespace flens {

struct ScalarOpPlus {};

template <typename L, typename R>
    const typename ScalarClosure<ScalarOpPlus, L, R>::ElementType
    evalScalarClosure(const ScalarClosure<ScalarOpPlus, L, R> &exp);

//-- operator overloading
template <typename L, typename R>
    const ScalarClosure<ScalarOpPlus,
                        typename L::Impl,
                        typename R::Impl>
    operator+(const Scalar<L> &l, const Scalar<R> &r);

template <typename ALPHA, typename R>
    const typename
    RestrictTo<CompatibleScalar<ALPHA, R>::value,
        ScalarClosure<ScalarOpPlus,
                      ScalarValue<ALPHA>,
                      typename R::Impl>
    >::Type
    operator+(const ALPHA &alpha, const Scalar<R> &r);

template <typename L, typename ALPHA>
    const typename
    RestrictTo<CompatibleScalar<ALPHA, L>::value,
        ScalarClosure<ScalarOpPlus,
                      typename L::Impl,
                      ScalarValue<ALPHA> >
    >::Type
    operator+(const Scalar<L> &l, const ALPHA &alpha);

// namespace flens

#endif // FLENS_SCALAROPERATIONS_PLUS_H