negation_vectorexpression.h

// Description: Negation vector-expression
// Documentation: vectorexpression.txt

#ifndef PASTELSYS_NEGATION_VECTOREXPRESSION_H
#define PASTELSYS_NEGATION_VECTOREXPRESSION_H

#include "pastel/sys/vector/negation_vectorexpression.h"

namespace Pastel
{

    template <
        typename Real,
        integer N,
        typename Expression>
    class VectorNegation
        : public VectorExpression<Real, N, VectorNegation<Real, N, Expression> >
    {
    public:
        using StorageType = const VectorNegation&;

        explicit VectorNegation(
            const Expression& data)
            : data_(data)
        {
        }

        Real operator[](integer index) const
        {
            return -data_[index];
        }

        integer size() const
        {
            return data_.size();
        }

        bool involves(
            const void* memoryBegin, const void* memoryEnd) const
        {
            return data_.involves(memoryBegin, memoryEnd);
        }

        bool evaluateBeforeAssignment(
            const void* memoryBegin, const void* memoryEnd) const
        {
            return data_.evaluateBeforeAssignment(memoryBegin, memoryEnd);
        }

    private:
        typename Expression::StorageType data_;
    };

}

#endif