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Diffstat (limited to 'src/gui/math3d/qfixedpt.cpp')
| -rw-r--r-- | src/gui/math3d/qfixedpt.cpp | 711 |
1 files changed, 0 insertions, 711 deletions
diff --git a/src/gui/math3d/qfixedpt.cpp b/src/gui/math3d/qfixedpt.cpp deleted file mode 100644 index 93f2150..0000000 --- a/src/gui/math3d/qfixedpt.cpp +++ /dev/null @@ -1,711 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). -** Contact: Qt Software Information (qt-info@nokia.com) -** -** This file is part of the $MODULE$ of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** 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 either Technology Preview License Agreement or the -** Beta Release License Agreement. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain -** additional rights. These rights are described in the Nokia Qt LGPL -** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this -** package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 3.0 as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU General Public License version 3.0 requirements will be -** met: http://www.gnu.org/copyleft/gpl.html. -** -** If you are unsure which license is appropriate for your use, please -** contact the sales department at qt-sales@nokia.com. -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qfixedpt.h" - -QT_BEGIN_NAMESPACE - -/*! - \internal - Returns the fixed-point square root of \a value. -*/ -qint64 qt_math3d_fixed_sqrt(qint64 value) -{ - qint64 result = 0; - qint64 bit = ((qint64)1) << 62; - while (bit > value) - bit >>= 2; - while (bit != 0) { - if (value >= (result + bit)) { - value -= result + bit; - result += (bit << 1); - } - result >>= 1; - bit >>= 2; - } - return result; -} - -/*! - \class QFixedPt - \brief The QFixedPt class represents fixed-point numbers within a 32-bit integer with a configurable precision. - - The template parameter is the number of bits of precision after - the decimal point. For example, QFixedPt<5> indicates that there - are 27 bits before the decimal point, and 5 bits of precision after - the decimal point. -*/ - -/*! - \fn QFixedPt::QFixedPt() - - Constructs a default fixed-point number. The initial value - is undefined. -*/ - -/*! - \fn QFixedPt::QFixedPt(int value) - - Constructs a fixed-point number from the integer \a value. -*/ - -/*! - \fn QFixedPt::QFixedPt(qreal value) - - Constructs a fixed-point number from the floating-point \a value. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator=(int value) - - Assigns the integer \a value to this fixed-point variable. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator=(qreal value) - - Assigns the floating-point \a value to this fixed-point variable. -*/ - -/*! - \fn int QFixedPt::bits() const - - Returns the raw bits that represent the fixed-point value of this object. - - \sa setBits() -*/ - -/*! - \fn void QFixedPt::setBits(int value) - - Sets the raw bits that represent the fixed-point value of - this object to \a value. - - \sa bits() -*/ - -#if !defined(QT_NO_MEMBER_TEMPLATES) || defined(Q_QDOC) - -/*! - \fn QFixedPt<Prec> QFixedPt::toPrecision() const - - Returns this fixed-point number, converted to the new fixed-point - precision Prec. - - \sa qFixedPtToPrecision() -*/ - -#endif - -/*! - \fn QFixedPt<Prec> qFixedPtToPrecision(const QFixedPt<PrecBits>& value) - - Returns the fixed-point number \a value, converted to the new fixed-point - precision Prec. - - \sa QFixedPt::toPrecision() -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator+=(const QFixedPt<PrecBits>& value) - - Adds \a value to this fixed-point number. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator+=(int value) - - Adds an integer \a value to this fixed-point number. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator+=(qreal value) - - Adds a floating-point \a value to this fixed-point number. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator-=(const QFixedPt<PrecBits>& value) - - Subtracts \a value from this fixed-point number. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator-=(int value) - - Subtracts an integer \a value from this fixed-point number. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator-=(qreal value) - - Subtracts a floating-point \a value from this fixed-point number. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator*=(const QFixedPt<PrecBits>& value) - - Multiplies this fixed-point number by \a value. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator*=(int value) - - Multiplies this fixed-point number by an integer \a value. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator*=(qreal value) - - Multiplies this fixed-point number by a floating-point \a value. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator/=(const QFixedPt<PrecBits>& value) - - Divides this fixed-point number by \a value. Division by zero - will result in zero. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator/=(int value) - - Divides this fixed-point number by an integer \a value. Division - by zero will result in zero. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator/=(qreal value) - - Divides this fixed-point number by a floating-point \a value. Division - by zero will result in zero. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator<<=(int value) - - Shifts this fixed-point number left by \a value bits. -*/ - -/*! - \fn QFixedPt<PrecBits>& QFixedPt::operator>>=(int value) - - Shifts this fixed-point number right by \a value bits. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator<<(int value) const - - Returns the result of shifting this fixed-point number - left by \a value bits. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator>>(int value) const - - Returns the result of shifting this fixed-point number - right by \a value bits. -*/ - -/*! - \fn bool QFixedPt::operator==(const QFixedPt<PrecBits>& value) const - - Returns true if this fixed-point number is equal to \a value; - false otherwise. -*/ - -/*! - \fn bool operator==(const QFixedPt<PrecBits>& v1, int v2) - \relates QFixedPt - - Returns true if \a v1 is equal to \a v2; false otherwise. -*/ - -/*! - \fn bool operator==(int v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns true if \a v1 is equal to \a v2; false otherwise. -*/ - -/*! - \fn bool operator==(const QFixedPt<PrecBits>& v1, qreal v2) - \relates QFixedPt - - Returns true if \a v1 is equal to \a v2; false otherwise. -*/ - -/*! - \fn bool operator==(qreal v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns true if \a v1 is equal to \a v2; false otherwise. -*/ - -/*! - \fn bool QFixedPt::operator!=(const QFixedPt<PrecBits>& value) const - - Returns true if this fixed-point number is not equal to \a value; - false otherwise. -*/ - -/*! - \fn bool operator!=(const QFixedPt<PrecBits>& v1, int v2) - \relates QFixedPt - - Returns true if \a v1 is not equal to \a v2; false otherwise. -*/ - -/*! - \fn bool operator!=(int v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns true if \a v1 is not equal to \a v2; false otherwise. -*/ - -/*! - \fn bool operator!=(const QFixedPt<PrecBits>& v1, qreal v2) - \relates QFixedPt - - Returns true if \a v1 is not equal to \a v2; false otherwise. -*/ - -/*! - \fn bool operator!=(qreal v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns true if \a v1 is not equal to \a v2; false otherwise. -*/ - -/*! - \fn bool QFixedPt::operator<=(const QFixedPt<PrecBits>& value) const - - Returns true if this fixed-point number is less than or equal to - \a value; false otherwise. -*/ - -/*! - \fn bool operator<=(const QFixedPt<PrecBits>& v1, int v2) - \relates QFixedPt - - Returns true if \a v1 is less than or equal to \a v2; false otherwise. -*/ - -/*! - \fn bool operator<=(int v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns true if \a v1 is less than or equal to \a v2; false otherwise. -*/ - -/*! - \fn bool operator<=(const QFixedPt<PrecBits>& v1, qreal v2) - \relates QFixedPt - - Returns true if \a v1 is less than or equal to \a v2; false otherwise. -*/ - -/*! - \fn bool operator<=(qreal v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns true if \a v1 is less than or equal to \a v2; false otherwise. -*/ - -/*! - \fn bool QFixedPt::operator<(const QFixedPt<PrecBits>& value) const - - Returns true if this fixed-point number is less than \a value; - false otherwise. -*/ - -/*! - \fn bool operator<(const QFixedPt<PrecBits>& v1, int v2) - \relates QFixedPt - - Returns true if \a v1 is less than \a v2; false otherwise. -*/ - -/*! - \fn bool operator<(int v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns true if \a v1 is less than \a v2; false otherwise. -*/ - -/*! - \fn bool operator<(const QFixedPt<PrecBits>& v1, qreal v2) - \relates QFixedPt - - Returns true if \a v1 is less than \a v2; false otherwise. -*/ - -/*! - \fn bool operator<(qreal v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns true if \a v1 is less than \a v2; false otherwise. -*/ - -/*! - \fn bool QFixedPt::operator>=(const QFixedPt<PrecBits>& value) const - - Returns true if this fixed-point number is greater than or equal to - \a value; false otherwise. -*/ - -/*! - \fn bool operator>=(const QFixedPt<PrecBits>& v1, int v2) - \relates QFixedPt - - Returns true if \a v1 is greater than or equal to \a v2; false otherwise. -*/ - -/*! - \fn bool operator>=(int v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns true if \a v1 is greater than or equal to \a v2; false otherwise. -*/ - -/*! - \fn bool operator>=(const QFixedPt<PrecBits>& v1, qreal v2) - \relates QFixedPt - - Returns true if \a v1 is greater than or equal to \a v2; false otherwise. -*/ - -/*! - \fn bool operator>=(qreal v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns true if \a v1 is greater than or equal to \a v2; false otherwise. -*/ - -/*! - \fn bool QFixedPt::operator>(const QFixedPt<PrecBits>& value) const - - Returns true if this fixed-point number is greater than \a value; - false otherwise. -*/ - -/*! - \fn bool operator>(const QFixedPt<PrecBits>& v1, int v2) - \relates QFixedPt - - Returns true if \a v1 is greater than \a v2; false otherwise. -*/ - -/*! - \fn bool operator>(int v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns true if \a v1 is greater than \a v2; false otherwise. -*/ - -/*! - \fn bool operator>(const QFixedPt<PrecBits>& v1, qreal v2) - \relates QFixedPt - - Returns true if \a v1 is greater than \a v2; false otherwise. -*/ - -/*! - \fn bool operator>(qreal v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns true if \a v1 is greater than \a v2; false otherwise. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator+(const QFixedPt<PrecBits>& value) const - - Returns the result of adding this fixed-point number and \a value. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator+(int value) const - - Returns the result of adding this fixed-point number and \a value. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator+(qreal value) const - - Returns the result of adding this fixed-point number and \a value. -*/ - -/*! - \fn QFixedPt<PrecBits> operator+(int v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns the result of adding \a v1 and \a v2. -*/ - -/*! - \fn QFixedPt<PrecBits> operator+(qreal v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns the result of adding \a v1 and \a v2. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator-(const QFixedPt<PrecBits>& value) const - - Returns the result of subtracting \a value from this fixed-point number. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator-(int value) const - - Returns the result of subtracting \a value from this fixed-point number. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator-(qreal value) const - - Returns the result of subtracting \a value from this fixed-point number. -*/ - -/*! - \fn QFixedPt<PrecBits> operator-(int v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns the result of subtracting \a v2 from \a v1. -*/ - -/*! - \fn QFixedPt<PrecBits> operator-(qreal v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns the result of subtracting \a v2 from \a v1. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator*(const QFixedPt<PrecBits>& value) const - - Returns the result of multiplying this fixed-point number by \a value. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator*(int value) const - - Returns the result of multiplying this fixed-point number by \a value. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator*(qreal value) const - - Returns the result of multiplying this fixed-point number by \a value. -*/ - -/*! - \fn QFixedPt<PrecBits> operator*(int v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns the result of multiplying \a v1 by \a v2. -*/ - -/*! - \fn QFixedPt<PrecBits> operator*(qreal v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns the result of multiplying \a v1 by \a v2. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator/(const QFixedPt<PrecBits>& value) const - - Returns the result of dividing this fixed-point number by \a value. - Division by zero will result in zero. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator/(int value) const - - Returns the result of dividing this fixed-point number by \a value. - Division by zero will result in zero. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator/(qreal value) const - - Returns the result of dividing this fixed-point number by \a value. - Division by zero will result in zero. -*/ - -/*! - \fn QFixedPt<PrecBits> operator/(int v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns the result of dividing \a v1 by \a v2. Division by zero will - result in zero. -*/ - -/*! - \fn QFixedPt<PrecBits> operator/(qreal v1, const QFixedPt<PrecBits>& v2) - \relates QFixedPt - - Returns the result of dividing \a v1 by \a v2. Division by zero will - result in zero. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::operator-() const - - Returns the negation of this fixed-point number. -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::sqrt() const - - Returns the square root of this fixed-point number. - - \sa sqrtF() -*/ - -/*! - \fn qreal QFixedPt::sqrtF() const - - Return the square root of this fixed-point number as a - floating-point value. - - \sa sqrt() -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::round() const - - Returns this fixed-point number, rounded to the nearest integer. - - \sa floor(), ceil(), truncate() -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::floor() const; - - Returns the largest integer that is less than or equal to - this fixed-point number. - - \sa round(), ceil(), truncate() -*/ - -/*! - \fn QFixedPt<PrecBits> QFixedPt::ceil() const - - Returns the smallest integer that is greater than or equal to - this fixed-point number. - - \sa round(), floor(), truncate() -*/ - -/*! - \fn int QFixedPt::truncate() const - - Returns this fixed-point number with the bits after the - decimal point truncated. - - \sa round(), floor(), ceil() -*/ - -/*! - \fn int QFixedPt::toInt() const - - Returns this fixed-point number, rounded to the nearest integer. - - \sa toReal() -*/ - -/*! - \fn qreal QFixedPt::toReal() const - - Returns this fixed-point number as a floating-point value. - - \sa toInt() -*/ - -/*! - \fn int qCeil(const QFixedPt<PrecBits>& value) - \relates QFixedPt - - Returns the smallest integer that is greater than or equal to - \a value. - - \sa qFloor(), qRound(), QFixedPt::ceil() -*/ - -/*! - \fn int qFloor(const QFixedPt<PrecBits>& value) - \relates QFixedPt - - Returns the largest integer that is less than or equal to - \a value. - - \sa qCeil(), qRound(), QFixedPt::floor() -*/ - -/*! - \fn int qRound(const QFixedPt<PrecBits>& value) - \relates QFixedPt - - Returns \a value, rounded to the nearest integer. - - \sa qCeil(), qFloor(), QFixedPt::round() -*/ - -/*! - \fn bool qFuzzyCompare(const QFixedPt<PrecBits>& v1, const QFixedPt<PrecBits>& v2, int compareBits) - \relates QFixedPt - - Returns true if \a v1 is almost equal to \a v2; false otherwise. - The \a compareBits parameter specifies the number of bits of precision - that should be considered relevant when performing the comparison. - By default, \a compareBits is PrecBits / 4. -*/ - -/*! - \fn bool qIsNull(const QFixedPt<PrecBits>& v) - \relates QFixedPt - - Returns true if \a v is zero; false otherwise. -*/ - -QT_END_NAMESPACE |