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29 
30 //  W A R N I N G
31 //  -------------
32 //
33 // This file is not part of the Qt Chart API.  It exists purely as an
34 // implementation detail.  This header file may change from version to
35 // version without notice, or even be removed.
36 //
37 // We mean it.
38 
39 #ifndef CHARTHELPERS_P_H
40 #define CHARTHELPERS_P_H
41 
42 #include <QtCore/QtNumeric>
43 #include <QtCore/QPointF>
44 
isValidValue(qreal value)45 static inline bool isValidValue(qreal value)
46 {
47     if (qIsNaN(value) || qIsInf(value)) {
48         qWarning("Ignored NaN, Inf, or -Inf value.");
49         return false;
50     }
51     return true;
52 }
53 
isValidValue(qreal x,qreal y)54 static inline bool isValidValue(qreal x, qreal y)
55 {
56     return (isValidValue(x) && isValidValue(y));
57 }
58 
isValidValue(const QPointF point)59 static inline bool isValidValue(const QPointF point)
60 {
61     return (isValidValue(point.x()) && isValidValue(point.y()));
62 }
63 
64 #endif // CHARTHELPERS_P_H
65