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diff --git a/src/datavisualization/axis/qlogvalue3daxisformatter_p.h b/src/datavisualization/axis/qlogvalue3daxisformatter_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the QtDataVisualization module.
+**
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the QtDataVisualization 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 QLOGVALUE3DAXISFORMATTER_P_H
+#define QLOGVALUE3DAXISFORMATTER_P_H
+
+#include "datavisualizationglobal_p.h"
+#include "qlogvalue3daxisformatter.h"
+#include "qvalue3daxisformatter_p.h"
+
+QT_BEGIN_NAMESPACE_DATAVISUALIZATION
+
+class QLogValue3DAxisFormatterPrivate : public QValue3DAxisFormatterPrivate
+{
+    Q_OBJECT
+
+public:
+    QLogValue3DAxisFormatterPrivate(QLogValue3DAxisFormatter *q);
+    virtual ~QLogValue3DAxisFormatterPrivate();
+
+    void recalculate();
+    void populateCopy(QValue3DAxisFormatter &copy) const;
+
+    float positionAt(float value) const;
+    float valueAt(float position) const;
+
+protected:
+    QLogValue3DAxisFormatter *qptr();
+
+    qreal m_base;
+    qreal m_logMin;
+    qreal m_logMax;
+    qreal m_logRangeNormalizer;
+    bool m_autoSubGrid;
+    bool m_showEdgeLabels;
+
+private:
+    bool m_evenMinSegment;
+    bool m_evenMaxSegment;
+
+    friend class QLogValue3DAxisFormatter;
+};
+
+QT_END_NAMESPACE_DATAVISUALIZATION
+
+#endif