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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_NumericFNs_H
#define Patternist_NumericFNs_H

#include "qaggregator_p.h"

/**
 * @file
 * @short Contains classes implementing the functions found in
 * <a href="http://www.w3.org/TR/xpath-functions/#numeric-value-functions">XQuery 1.0 and
 * XPath 2.0 Functions and Operators, 6.4 Functions on Numeric Values</a>.
 *
 * @ingroup Patternist_functions
 */

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist
{

    /**
     * @short Implements the function <tt>fn:floor()</tt>.
     *
     * @ingroup Patternist_functions
     * @author Frans Englich <frans.englich@nokia.com>
     */
    class FloorFN : public Aggregator
    {
    public:
        virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
    };

    /**
     * @short Implements the function <tt>fn:abs()</tt>.
     *
     * @ingroup Patternist_functions
     * @author Frans Englich <frans.englich@nokia.com>
     */
    class AbsFN : public Aggregator
    {
    public:
        virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
    };

    /**
     * @short Implements the function <tt>fn:round()</tt>.
     *
     * @ingroup Patternist_functions
     * @author Frans Englich <frans.englich@nokia.com>
     */
    class RoundFN : public Aggregator
    {
    public:
        virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
    };

    /**
     * @short Implements the function <tt>fn:ceiling()</tt>.
     *
     * @ingroup Patternist_functions
     * @author Frans Englich <frans.englich@nokia.com>
     */
    class CeilingFN : public Aggregator
    {
    public:
        virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
    };

    /**
     * @short Implements the function <tt>fn:round-half-to-even()</tt>.
     *
     * @see <a href="http://www.w3.org/TR/xpath-functions/#func-round-half-to-even">XQuery 1.0
     * and XPath 2.0 Functions and Operators, 6.4.5 fn:round-half-to-even</a>
     * @ingroup Patternist_functions
     * @author Frans Englich <frans.englich@nokia.com>
     */
    class RoundHalfToEvenFN : public Aggregator
    {
    public:
        virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
    };
}

QT_END_NAMESPACE

QT_END_HEADER

#endif
