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