--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/data/qabstractfloat_p.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,174 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtXmlPatterns module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  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
+{
+    /**
+     * @short Base template class for Float and Double classes.
+     *
+     * @author Vincent Ricard <magic@magicninja.org>
+     * @ingroup Patternist_xdm
+     */
+    template <const bool isDouble>
+    class AbstractFloat : public Numeric
+    {
+    public:
+        static Numeric::Ptr fromValue(const xsDouble num);
+        static AtomicValue::Ptr fromLexical(const QString &strNumeric);
+
+        /**
+         * @todo more extensive docs.
+         *
+         * Performs floating point comparison.
+         *
+         * @returns @c true if @p a and @p are equal, otherwise @c false.
+         */
+        static bool isEqual(const xsDouble a, const xsDouble b);
+
+        /**
+         * Determines the Effective %Boolean Value of this number.
+         *
+         * @returns @c false if the number is 0 or @c NaN, otherwise @c true.
+         */
+        bool evaluateEBV(const QExplicitlySharedDataPointer<DynamicContext> &) const;
+
+        /**
+         * Returns this AbstractFloat represented as an @c xs:string.
+         *
+         * @note In the XPath/XQuery languages, converting @c xs:double and @c xs:float
+         * to @c xs:string is not specified in XML Schema 1.0 Part 2: Datatypes Second Edition,
+         * but in XQuery 1.0 and XPath 2.0 Functions and Operators. This will change with W3C XML
+         * Schema 1.1
+         *
+         * @see <a href="http://www.w3.org/TR/xpath-functions/#casting-to-string">XQuery 1.0
+         * and XPath 2.0 Functions and Operators, 17.1.2 Casting to xs:string and xdt:untypedAtomic</a>
+         */
+        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:
+        /**
+         * From the Open Group's man page: "The signbit() macro shall return a
+         * non-zero value if and only if the sign of its argument value is
+         * negative."
+         *
+         * MS Windows doesn't have std::signbit() so here's
+         * a reinvention of that function.
+         */
+        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"
+
+    /**
+     * @short An instantiation of AbsbstractFloat suitable for @c xs:double.
+     *
+     * @ingroup Patternist_xdm
+     */
+    typedef AbstractFloat<true> Double;
+
+    /**
+     * @short An instantiation of AbstractFloat suitable for @c xs:float.
+     *
+     * @ingroup Patternist_xdm
+     */
+    typedef AbstractFloat<false> Float;
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif