1 files changed, 55 insertions, 0 deletions
diff --git a/src/charts/charthelpers_p.h b/src/charts/charthelpers_p.h
new file mode 100644
index 00000000..8e96e842
--- /dev/null
+++ b/src/charts/charthelpers_p.h
@@ -0,0 +1,55 @@
+/****************************************************************************
+**
+** 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 Qt Enterprise Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** 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
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt Enterprise Chart 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 CHARTHELPERS_P_H
+#define CHARTHELPERS_P_H
+
+#include <qnumeric.h>
+#include <QPointF>
+
+static inline bool isValidValue(qreal value)
+{
+    if (qIsNaN(value) || qIsInf(value)) {
+        qWarning("Ignored NaN, Inf, or -Inf value.");
+        return false;
+    }
+    return true;
+}
+
+static inline bool isValidValue(qreal x, qreal y)
+{
+    return (isValidValue(x) && isValidValue(y));
+}
+
+static inline bool isValidValue(const QPointF point)
+{
+    return (isValidValue(point.x()) && isValidValue(point.y()));
+}
+
+#endif // CHARTHELPERS_P_H