Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : #ifndef _FRACT_HXX
      20             : #define _FRACT_HXX
      21             : 
      22             : #include "tools/toolsdllapi.h"
      23             : #include <tools/solar.h>
      24             : 
      25             : class SvStream;
      26             : 
      27             : class TOOLS_DLLPUBLIC SAL_WARN_UNUSED Fraction
      28             : {
      29             : private:
      30             :     long            nNumerator;
      31             :     long            nDenominator;
      32             : 
      33             : public:
      34       13393 :                     Fraction() { nNumerator = 0; nDenominator = 1; }
      35             :                     Fraction( const Fraction & rFrac );
      36             :                     Fraction( long nNum, long nDen=1 );
      37             :                     Fraction( double dVal );
      38             : 
      39             :     bool            IsValid() const;
      40             : 
      41      426172 :     long            GetNumerator() const { return nNumerator; }
      42      601958 :     long            GetDenominator() const { return nDenominator; }
      43             : 
      44             :     operator        long() const;
      45             :     operator        double() const;
      46             : 
      47             :     Fraction&       operator=( const Fraction& rfrFrac );
      48             : 
      49             :     Fraction&       operator+=( const Fraction& rfrFrac );
      50             :     Fraction&       operator-=( const Fraction& rfrFrac );
      51             :     Fraction&       operator*=( const Fraction& rfrFrac );
      52             :     Fraction&       operator/=( const Fraction& rfrFrac );
      53             : 
      54             :     void            ReduceInaccurate( unsigned nSignificantBits );
      55             : 
      56             :     friend inline   Fraction operator+( const Fraction& rVal1, const Fraction& rVal2 );
      57             :     friend inline   Fraction operator-( const Fraction& rVal1, const Fraction& rVal2 );
      58             :     friend inline   Fraction operator*( const Fraction& rVal1, const Fraction& rVal2 );
      59             :     friend inline   Fraction operator/( const Fraction& rVal1, const Fraction& rVal2 );
      60             : 
      61             :     TOOLS_DLLPUBLIC friend          bool operator==( const Fraction& rVal1, const Fraction& rVal2 );
      62             :     friend inline   bool operator!=( const Fraction& rVal1, const Fraction& rVal2 );
      63             :     TOOLS_DLLPUBLIC friend          bool operator< ( const Fraction& rVal1, const Fraction& rVal2 );
      64             :     TOOLS_DLLPUBLIC friend          bool operator> ( const Fraction& rVal1, const Fraction& rVal2 );
      65             :     friend inline   bool operator<=( const Fraction& rVal1, const Fraction& rVal2 );
      66             :     friend inline   bool operator>=( const Fraction& rVal1, const Fraction& rVal2 );
      67             : 
      68             :     TOOLS_DLLPUBLIC friend SvStream& operator>>( SvStream& rIStream, Fraction& rFract );
      69             :     TOOLS_DLLPUBLIC friend SvStream& operator<<( SvStream& rOStream, const Fraction& rFract );
      70             : };
      71             : 
      72      355749 : inline Fraction::Fraction( const Fraction& rFrac )
      73             : {
      74      355749 :     nNumerator   = rFrac.nNumerator;
      75      355749 :     nDenominator = rFrac.nDenominator;
      76      355749 : }
      77             : 
      78       25690 : inline Fraction& Fraction::operator=( const Fraction& rFrac )
      79             : {
      80       25690 :     nNumerator   = rFrac.nNumerator;
      81       25690 :     nDenominator = rFrac.nDenominator;
      82       25690 :     return *this;
      83             : }
      84             : 
      85         292 : inline bool Fraction::IsValid() const
      86             : {
      87         292 :     return (nDenominator > 0);
      88             : }
      89             : 
      90       11210 : inline Fraction::operator long() const
      91             : {
      92       11210 :     if ( nDenominator > 0 )
      93       11210 :         return (nNumerator / nDenominator);
      94             :     else
      95           0 :         return 0;
      96             : }
      97             : 
      98           0 : inline Fraction operator+( const Fraction& rVal1, const Fraction& rVal2 )
      99             : {
     100           0 :     Fraction aErg( rVal1 );
     101           0 :     aErg += rVal2;
     102           0 :     return aErg;
     103             : }
     104             : 
     105             : inline Fraction operator-( const Fraction& rVal1, const Fraction& rVal2 )
     106             : {
     107             :     Fraction aErg( rVal1 );
     108             :     aErg -= rVal2;
     109             :     return aErg;
     110             : }
     111             : 
     112           0 : inline Fraction operator*( const Fraction& rVal1, const Fraction& rVal2 )
     113             : {
     114           0 :     Fraction aErg( rVal1 );
     115           0 :     aErg *= rVal2;
     116           0 :     return aErg;
     117             : }
     118             : 
     119         972 : inline Fraction operator/( const Fraction& rVal1, const Fraction& rVal2 )
     120             : {
     121         972 :     Fraction aErg( rVal1 );
     122         972 :     aErg /= rVal2;
     123         972 :     return aErg;
     124             : }
     125             : 
     126         938 : inline bool operator !=( const Fraction& rVal1, const Fraction& rVal2 )
     127             : {
     128         938 :     return !(rVal1 == rVal2);
     129             : }
     130             : 
     131           0 : inline bool operator <=( const Fraction& rVal1, const Fraction& rVal2 )
     132             : {
     133           0 :     return !(rVal1 > rVal2);
     134             : }
     135             : 
     136             : inline bool operator >=( const Fraction& rVal1, const Fraction& rVal2 )
     137             : {
     138             :     return !(rVal1 < rVal2);
     139             : }
     140             : 
     141             : #endif
     142             : 
     143             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */