#define QT_END_NAMESPACE
This macro expands to.
static bool qt_is_nan(double d)
#define QT_BEGIN_NAMESPACE
This macro expands to.
Q_CORE_EXPORT bool qIsNaN(double d)
Returns true if the double {d} is not a number (NaN).
Q_CORE_EXPORT double qSNaN()
Returns the bit pattern of a signalling NaN as a double.
Q_CORE_EXPORT double qInf()
Returns the bit pattern for an infinite number as a double.
Q_CORE_EXPORT double qQNaN()
Returns the bit pattern of a quiet NaN as a double.
static bool qt_is_inf(double d)
Q_CORE_EXPORT bool qIsFinite(double d)
Returns true if the double {d} is a finite number.
static bool qt_is_finite(double d)
Q_CORE_EXPORT bool qIsInf(double d)
Returns true if the double {d} is equivalent to infinity.