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39
40#ifndef QNUMERIC_H
41#define QNUMERIC_H
42
43#include <QtCore/qglobal.h>
44
45QT_BEGIN_NAMESPACE
46
47
48Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsInf(double d);
49Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsNaN(double d);
50Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsFinite(double d);
51Q_CORE_EXPORT Q_DECL_CONST_FUNCTION int qFpClassify(double val);
52Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsInf(float f);
53Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsNaN(float f);
54Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsFinite(float f);
55Q_CORE_EXPORT Q_DECL_CONST_FUNCTION int qFpClassify(float val);
56Q_CORE_EXPORT Q_DECL_CONST_FUNCTION double qSNaN();
57Q_CORE_EXPORT Q_DECL_CONST_FUNCTION double qQNaN();
58Q_CORE_EXPORT Q_DECL_CONST_FUNCTION double qInf();
59
60Q_CORE_EXPORT quint32 qFloatDistance(float a, float b);
61Q_CORE_EXPORT quint64 qFloatDistance(double a, double b);
62
63#define Q_INFINITY (QT_PREPEND_NAMESPACE(qInf)())
64#define Q_SNAN (QT_PREPEND_NAMESPACE(qSNaN)())
65#define Q_QNAN (QT_PREPEND_NAMESPACE(qQNaN)())
66
67QT_END_NAMESPACE
68
69#endif // QNUMERIC_H
70