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Branched from the monolithic repo, Qt master branch, at commit
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Free Documentation License
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of this
+** file.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*! 
+    \headerfile <QtCore/qmath.h>
+    \title Math Functions
+    \ingroup funclists
+    \brief The <QtCore/qmath.h> header provides various math functions.
+    \pagekeywords math trigonometry qmath floor ceiling absolute sine cosine tangent inverse tan exponent power natural logarithm
+*/
+
+/*!
+    \fn int qCeil(qreal v)
+    Return the ceiling of the value \a v. 
+
+    The ceiling is the smallest integer that is not less than \a v.
+    For example, if \a v is 41.2, then the ceiling is 42.
+    
+    \relates <QtCore/qmath.h>
+    \sa qFloor()
+*/
+
+/*!
+    \fn int qFloor(qreal v)
+    Return the floor of the value \a v.
+
+    The floor is the largest integer that is not greater than \a v.
+    For example, if \a v is 41.2, then the floor is 41.
+
+    \relates <QtCore/qmath.h>
+    \sa qCeil()
+*/
+
+/*!
+    \fn qreal qFabs(qreal v)
+    Returns the absolute value of \a v as a qreal.
+*/
+
+/*!
+    \fn qreal qSin(qreal v)
+    Returns the sine of the angle \a v in radians.
+
+    \relates <QtCore/qmath.h>
+    \sa qCos(), qTan()
+*/
+
+/*!
+    \fn  qreal qCos(qreal v)
+    Returns the cosine of an angle \a v in radians.
+
+    \relates <QtCore/qmath.h>
+    \sa qSin(), qTan()
+*/
+
+/*!
+    \fn qreal qTan(qreal v)
+    Returns the tangent of an angle \a v in radians.
+
+    \relates <QtCore/qmath.h>
+    \sa qSin(), qCos()
+*/
+
+/*!
+    \fn qreal qAcos(qreal v)
+    Returns the arccosine of \a v as an angle in radians.
+    Arccosine is the inverse operation of cosine.
+
+    \relates <QtCore/qmath.h>
+    \sa qAtan(), qAsin(), qCos()
+*/
+
+/*!
+    \fn qreal qAsin(qreal v)
+    Returns the arcsine of \a v as an angle in radians.
+    Arcsine is the inverse operation of sine.
+
+    \relates <QtCore/qmath.h>
+    \sa qSin(), qAtan(), qAcos()
+*/
+
+/*!
+    \fn qreal qAtan(qreal v)
+    Returns the arctangent of \a v as an angle in radians.
+    Arctangent is the inverse operation of tangent.
+
+    \relates <QtCore/qmath.h>
+    \sa qTan(), qAcos(), qAsin()
+*/
+
+/*!
+    \fn qreal qAtan2(qreal x, qreal y)
+    Returns the arctangent of a point specified by the coordinates \a x and \a y.
+    This function will return the angle and its direction.
+
+    \relates <QtCore/qmath.h>
+    \sa qAtan()
+*/
+
+/*!
+    \fn qreal qSqrt(qreal v)
+    Returns the square root of \a v.
+    This function returns a NaN if \a v is a negative number.
+
+    \relates <QtCore/qmath.h>
+    \sa qPow()
+*/
+
+/*!
+    \fn qreal qLn(qreal v)
+    Returns the natural logarithm of \a v. Natural logarithm uses base e.
+
+    \relates <QtCore/qmath.h>
+    \sa qExp()
+*/
+
+/*!
+    \fn qreal qExp(qreal v)
+    Returns the exponential function of \c e to the power of \a v.
+
+    \relates <QtCore/qmath.h>
+    \sa qLn()
+*/
+
+/*!
+    \fn qreal qPow(qreal x, qreal y)
+    Returns the value of \a x raised to the power of \a y.
+    That is, \a x is the base and \a y is the exponent.
+
+    \relates <QtCore/qmath.h>
+    \sa qSqrt()
+*/