Normalized.h

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/*
 *  Copyright (C) 2012 Josh Bialkowski (jbialk@mit.edu)
 *
 *  This file is part of mpblocks.
 *
 *  mpblocks is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  mpblocks is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with mpblocks.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef MPBLOCKS_CUDA_POLYNOMIAL_NORMALIZED_H_
#define MPBLOCKS_CUDA_POLYNOMIAL_NORMALIZED_H_

namespace   mpblocks {
namespace       cuda {
namespace polynomial {

template <typename Scalar, class Exp, class Spec>
struct Normalized :
    public RValue< Scalar, Normalized<Scalar,Exp,Spec>, Spec >
{
    Exp const& exp;

    __host__ __device__
    Normalized( Exp const& exp ):
        exp(exp)
    {
    }

    __host__ __device__
    Scalar eval( Scalar x )
    {
        return exp.eval(x);
    }
};


template <typename Scalar, class Exp, class Spec>
struct get_spec< Normalized<Scalar,Exp,Spec > >
{
    typedef Spec result;
};

template <int idx, typename Scalar, class Exp, class Spec>
__host__ __device__
Scalar get( const Normalized<Scalar,Exp,Spec>& exp )
{
    enum{ max_idx = intlist::max<Spec>::value };
    return get<idx>( exp.exp ) / get<max_idx>( exp.exp );
}


template <typename Scalar, class Exp, class Spec>
__host__ __device__
Normalized<Scalar,Exp,Spec> normalized( const RValue<Scalar,Exp,Spec>& exp )
{
    return Normalized<Scalar,Exp,Spec>( static_cast<Exp const&>(exp) );
}




} // polynomial
} // cuda
} // mpblocks





#endif // NORMALIZED_H_