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Diffstat (limited to 'include/tools/fract.hxx')
-rw-r--r-- | include/tools/fract.hxx | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/include/tools/fract.hxx b/include/tools/fract.hxx new file mode 100644 index 000000000000..24c6721f0fa3 --- /dev/null +++ b/include/tools/fract.hxx @@ -0,0 +1,143 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ +#ifndef _FRACT_HXX +#define _FRACT_HXX + +#include "tools/toolsdllapi.h" +#include <tools/solar.h> + +class SvStream; + +class TOOLS_DLLPUBLIC SAL_WARN_UNUSED Fraction +{ +private: + long nNumerator; + long nDenominator; + +public: + Fraction() { nNumerator = 0; nDenominator = 1; } + Fraction( const Fraction & rFrac ); + Fraction( long nNum, long nDen=1 ); + Fraction( double dVal ); + + bool IsValid() const; + + long GetNumerator() const { return nNumerator; } + long GetDenominator() const { return nDenominator; } + + operator long() const; + operator double() const; + + Fraction& operator=( const Fraction& rfrFrac ); + + Fraction& operator+=( const Fraction& rfrFrac ); + Fraction& operator-=( const Fraction& rfrFrac ); + Fraction& operator*=( const Fraction& rfrFrac ); + Fraction& operator/=( const Fraction& rfrFrac ); + + void ReduceInaccurate( unsigned nSignificantBits ); + + friend inline Fraction operator+( const Fraction& rVal1, const Fraction& rVal2 ); + friend inline Fraction operator-( const Fraction& rVal1, const Fraction& rVal2 ); + friend inline Fraction operator*( const Fraction& rVal1, const Fraction& rVal2 ); + friend inline Fraction operator/( const Fraction& rVal1, const Fraction& rVal2 ); + + TOOLS_DLLPUBLIC friend bool operator==( const Fraction& rVal1, const Fraction& rVal2 ); + friend inline bool operator!=( const Fraction& rVal1, const Fraction& rVal2 ); + TOOLS_DLLPUBLIC friend bool operator< ( const Fraction& rVal1, const Fraction& rVal2 ); + TOOLS_DLLPUBLIC friend bool operator> ( const Fraction& rVal1, const Fraction& rVal2 ); + friend inline bool operator<=( const Fraction& rVal1, const Fraction& rVal2 ); + friend inline bool operator>=( const Fraction& rVal1, const Fraction& rVal2 ); + + TOOLS_DLLPUBLIC friend SvStream& operator>>( SvStream& rIStream, Fraction& rFract ); + TOOLS_DLLPUBLIC friend SvStream& operator<<( SvStream& rOStream, const Fraction& rFract ); +}; + +inline Fraction::Fraction( const Fraction& rFrac ) +{ + nNumerator = rFrac.nNumerator; + nDenominator = rFrac.nDenominator; +} + +inline Fraction& Fraction::operator=( const Fraction& rFrac ) +{ + nNumerator = rFrac.nNumerator; + nDenominator = rFrac.nDenominator; + return *this; +} + +inline bool Fraction::IsValid() const +{ + return (nDenominator > 0); +} + +inline Fraction::operator long() const +{ + if ( nDenominator > 0 ) + return (nNumerator / nDenominator); + else + return 0; +} + +inline Fraction operator+( const Fraction& rVal1, const Fraction& rVal2 ) +{ + Fraction aErg( rVal1 ); + aErg += rVal2; + return aErg; +} + +inline Fraction operator-( const Fraction& rVal1, const Fraction& rVal2 ) +{ + Fraction aErg( rVal1 ); + aErg -= rVal2; + return aErg; +} + +inline Fraction operator*( const Fraction& rVal1, const Fraction& rVal2 ) +{ + Fraction aErg( rVal1 ); + aErg *= rVal2; + return aErg; +} + +inline Fraction operator/( const Fraction& rVal1, const Fraction& rVal2 ) +{ + Fraction aErg( rVal1 ); + aErg /= rVal2; + return aErg; +} + +inline bool operator !=( const Fraction& rVal1, const Fraction& rVal2 ) +{ + return !(rVal1 == rVal2); +} + +inline bool operator <=( const Fraction& rVal1, const Fraction& rVal2 ) +{ + return !(rVal1 > rVal2); +} + +inline bool operator >=( const Fraction& rVal1, const Fraction& rVal2 ) +{ + return !(rVal1 < rVal2); +} + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |