qabstractfloat_p.h

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//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.

#ifndef Patternist_AbstractFloat_H
#define Patternist_AbstractFloat_H

#include <math.h>

#include <qnumeric.h>

#include "qcommonvalues_p.h"
#include "qdecimal_p.h"
#include "qschemanumeric_p.h"
#include "qvalidationerror_p.h"
#include "qbuiltintypes_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist
{
    template <const bool isDouble>
    class AbstractFloat : public Numeric
    {
    public:
        static Numeric::Ptr fromValue(const xsDouble num);
        static AtomicValue::Ptr fromLexical(const QString &strNumeric);

        static bool isEqual(const xsDouble a, const xsDouble b);

        bool evaluateEBV(const QExplicitlySharedDataPointer<DynamicContext> &) const;

        virtual QString stringValue() const;

        virtual xsDouble toDouble() const;
        virtual xsInteger toInteger() const;
        virtual xsFloat toFloat() const;
        virtual xsDecimal toDecimal() const;

        virtual Numeric::Ptr round() const;
        virtual Numeric::Ptr roundHalfToEven(const xsInteger scale) const;
        virtual Numeric::Ptr floor() const;
        virtual Numeric::Ptr ceiling() const;
        virtual Numeric::Ptr abs() const;

        virtual bool isNaN() const;
        virtual bool isInf() const;

        virtual ItemType::Ptr type() const;
        virtual Item toNegated() const;
        virtual qulonglong toUnsignedInteger() const;

        virtual bool isSigned() const;
    protected:
        AbstractFloat(const xsDouble num);

    private:
        static inline int internalSignbit(const xsDouble v);
        inline bool isZero() const;

        const xsDouble m_value;
    };

    template <const bool isDouble>
    Numeric::Ptr createFloat(const xsDouble num);

#include "qabstractfloat.cpp"

    typedef AbstractFloat<true> Double;

    typedef AbstractFloat<false> Float;
}

QT_END_NAMESPACE

QT_END_HEADER

#endif