qnumeric.h File Reference

#include <QtCore/qglobal.h>

Go to the source code of this file.

Macros
#define	Q_INFINITY   (QT_PREPEND_NAMESPACE(qInf)())
#define	Q_QNAN   (QT_PREPEND_NAMESPACE(qQNaN)())
#define	Q_SNAN   (QT_PREPEND_NAMESPACE(qSNaN)())

Functions
Q_CORE_EXPORT double	qInf ()
	Returns the bit pattern for an infinite number as a double. More...
Q_CORE_EXPORT bool	qIsFinite (double d)
	Returns true if the double {d} is a finite number. More...
Q_CORE_EXPORT bool	qIsFinite (float f)
	Returns true if the float {f} is a finite number. More...
Q_CORE_EXPORT bool	qIsInf (double d)
	Returns true if the double {d} is equivalent to infinity. More...
Q_CORE_EXPORT bool	qIsInf (float f)
	Returns true if the float {f} is equivalent to infinity. More...
Q_CORE_EXPORT bool	qIsNaN (double d)
	Returns true if the double {d} is not a number (NaN). More...
Q_CORE_EXPORT bool	qIsNaN (float f)
	Returns true if the float {f} is not a number (NaN). More...
Q_CORE_EXPORT double	qQNaN ()
	Returns the bit pattern of a quiet NaN as a double. More...
Q_CORE_EXPORT double	qSNaN ()
	Returns the bit pattern of a signalling NaN as a double. More...

Macro Definition Documentation

Q_INFINITY

#define Q_INFINITY   (QT_PREPEND_NAMESPACE(qInf)())

Definition at line 63 of file qnumeric.h.

Q_QNAN

#define Q_QNAN   (QT_PREPEND_NAMESPACE(qQNaN)())

Definition at line 65 of file qnumeric.h.

Q_SNAN

#define Q_SNAN   (QT_PREPEND_NAMESPACE(qSNaN)())

Definition at line 64 of file qnumeric.h.

Function Documentation

qInf()

Q_CORE_EXPORT double qInf

(

)

Returns the bit pattern for an infinite number as a double.

Definition at line 90 of file qnumeric.cpp.

Referenced by QTextStreamPrivate::getReal(), QDeclarativeJS::integerFromString(), and QScript::integerFromString().

{ return qt_inf(); }

qIsFinite() [1/2]

Q_CORE_EXPORT bool qIsFinite

(

double

d

)

Returns true if the double {d} is a finite number.

Definition at line 60 of file qnumeric.cpp.

{ return qt_is_finite(d); }

qIsFinite() [2/2]

Q_CORE_EXPORT bool qIsFinite

(

float

f

)

Returns true if the float {f} is a finite number.

Definition at line 75 of file qnumeric.cpp.

{ return qt_is_finite(f); }

qIsInf() [1/2]

Q_CORE_EXPORT bool qIsInf

(

double

d

)

Returns true if the double {d} is equivalent to infinity.

Definition at line 50 of file qnumeric.cpp.

Referenced by QPatternist::DurationNumericMathematician::calculate(), QPatternist::AbstractFloat< isDouble >::isEqual(), QPatternist::AbstractFloat< isDouble >::isInf(), QPatternist::Numeric::roundFloat(), QPatternist::AbstractFloat< isDouble >::stringValue(), QScript::ToInt32(), QScript::ToInteger(), QScript::ToUInt16(), and QScript::ToUInt32().

{ return qt_is_inf(d); }

qIsInf() [2/2]

Q_CORE_EXPORT bool qIsInf

(

float

f

)

Returns true if the float {f} is equivalent to infinity.

Definition at line 65 of file qnumeric.cpp.

{ return qt_is_inf(f); }

qIsNaN() [1/2]

Q_CORE_EXPORT bool qIsNaN

(

double

d

)

Returns true if the double {d} is not a number (NaN).

Definition at line 55 of file qnumeric.cpp.

Referenced by _q_equal(), QGraphicsRotation::applyTo(), QPatternist::DurationNumericMathematician::calculate(), QPatternist::NumericToBooleanCaster::castFrom(), QPatternist::AbstractFloatSortComparator< t_op >::compare(), QDeclarativePath::createPointCache(), QPatternist::AbstractFloat< isDouble >::evaluateEBV(), QPatternist::SubstringFN::evaluateSingleton(), QTransform::fromScale(), QTransform::fromTranslate(), QPatternist::AbstractFloat< isDouble >::isNaN(), QPatternist::loadPattern(), QScript::MsToDateTime(), qt_real_to_string(), QTransform::rotate(), QTransform::rotateRadians(), QPatternist::Numeric::roundFloat(), QTransform::scale(), QGradient::setColorAt(), QGraphicsWidgetPrivate::setHeight(), QDeclarativeItemPrivate::setHeight(), QGraphicsWidgetPrivate::setWidth(), QDeclarativeItemPrivate::setWidth(), QGraphicsItem::setX(), QGraphicsItem::setY(), QTransform::shear(), QPatternist::AbstractFloat< isDouble >::stringValue(), QScript::ToBool(), QScript::ToInt32(), QScript::ToInteger(), QScript::ToUInt16(), QScript::ToUInt32(), and QTransform::translate().

{ return qt_is_nan(d); }

qIsNaN() [2/2]

Q_CORE_EXPORT bool qIsNaN

(

float

f

)

Returns true if the float {f} is not a number (NaN).

Definition at line 70 of file qnumeric.cpp.

{ return qt_is_nan(f); }

qQNaN()

Q_CORE_EXPORT double qQNaN

(

)

Returns the bit pattern of a quiet NaN as a double.

Definition at line 85 of file qnumeric.cpp.

{ return qt_qnan(); }

qSNaN()

Q_CORE_EXPORT double qSNaN

(

)

Returns the bit pattern of a signalling NaN as a double.

Definition at line 80 of file qnumeric.cpp.

Referenced by QScript::DateTimeToMs(), QTextStreamPrivate::getReal(), QDeclarativeJS::integerFromString(), and QScript::integerFromString().

{ return qt_snan(); }