/* -*- 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 INCLUDED_TOOLS_FRACT_HXX #define INCLUDED_TOOLS_FRACT_HXX #include #include #include #include #include class SvStream; class SAL_WARN_UNUSED TOOLS_DLLPUBLIC Fraction final { /// these two fields form a boost::rational, but I didn't want to put more boost headers into the global space sal_Int32 mnNumerator = 0; sal_Int32 mnDenominator = 1; bool mbValid = true; public: Fraction() = default; Fraction( const Fraction & rFrac ) = default; Fraction( Fraction && rFrac ) = default; explicit Fraction( double dVal ); Fraction( double nNum, double nDen ); Fraction( sal_Int64 nNum, sal_Int64 nDen ); // just to prevent ambiguity between the sal_Int64 and double constructors template Fraction( T1 nNum, T2 nDen, typename std::enable_if::value && std::is_integral::value, int>::type = 0) : Fraction( sal_Int64(nNum), sal_Int64(nDen) ) {} bool IsValid() const { return mbValid; } sal_Int32 GetNumerator() const; sal_Int32 GetDenominator() const; explicit operator sal_Int32() const; #if SAL_TYPES_SIZEOFPOINTER == 8 explicit operator ::tools::Long() const { return operator sal_Int32(); } #endif explicit operator double() const; Fraction& operator=( const Fraction& rfrFrac ) = default; Fraction& operator=( Fraction&& rfrFrac ) = default; Fraction& operator=( double v ) { return operator=(Fraction(v)); } Fraction& operator+=( const Fraction& rfrFrac ); Fraction& operator-=( const Fraction& rfrFrac ); Fraction& operator*=( const Fraction& rfrFrac ); Fraction& operator/=( const Fraction& rfrFrac ); Fraction& operator+=( double v ) { return operator+=(Fraction(v)); } Fraction& operator-=( double v ) { return operator-=(Fraction(v)); } Fraction& operator*=( double v ) { return operator*=(Fraction(v)); } Fraction& operator/=( double v ) { return operator/=(Fraction(v)); } void ReduceInaccurate( unsigned nSignificantBits ); /// Multiply the two fractions represented here and reduce inaccuracy to 32-bits, used by vcl static Fraction MakeFraction(tools::Long nN1, tools::Long nN2, tools::Long nD1, tools::Long nD2); // Compute value usable as hash. size_t GetHashValue() const; TOOLS_DLLPUBLIC friend Fraction operator+( const Fraction& rVal1, const Fraction& rVal2 ); TOOLS_DLLPUBLIC friend Fraction operator-( const Fraction& rVal1, const Fraction& rVal2 ); TOOLS_DLLPUBLIC friend Fraction operator*( const Fraction& rVal1, const Fraction& rVal2 ); TOOLS_DLLPUBLIC friend Fraction 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 ); TOOLS_DLLPUBLIC friend 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 ); TOOLS_DLLPUBLIC friend bool operator>=( const Fraction& rVal1, const Fraction& rVal2 ); }; TOOLS_DLLPUBLIC Fraction operator+( const Fraction& rVal1, const Fraction& rVal2 ); TOOLS_DLLPUBLIC Fraction operator-( const Fraction& rVal1, const Fraction& rVal2 ); TOOLS_DLLPUBLIC Fraction operator*( const Fraction& rVal1, const Fraction& rVal2 ); TOOLS_DLLPUBLIC Fraction operator/( const Fraction& rVal1, const Fraction& rVal2 ); TOOLS_DLLPUBLIC bool operator !=( const Fraction& rVal1, const Fraction& rVal2 ); TOOLS_DLLPUBLIC bool operator <=( const Fraction& rVal1, const Fraction& rVal2 ); TOOLS_DLLPUBLIC bool operator >=( const Fraction& rVal1, const Fraction& rVal2 ); inline Fraction operator+( double v1, const Fraction& rVal2 ) { return Fraction(v1) + rVal2; } inline Fraction operator-( double v1, const Fraction& rVal2 ) { return Fraction(v1) - rVal2; } inline Fraction operator*( double v1, const Fraction& rVal2 ) { return Fraction(v1) * rVal2; } inline Fraction operator/( double v1, const Fraction& rVal2 ) { return Fraction(v1) / rVal2; } inline Fraction operator+( const Fraction& rVal1, double v2 ) { return rVal1 + Fraction(v2); } inline Fraction operator-( const Fraction& rVal1, double v2 ) { return rVal1 - Fraction(v2); } inline Fraction operator*( const Fraction& rVal1, double v2 ) { return rVal1 * Fraction(v2); } inline Fraction operator/( const Fraction& rVal1, double v2 ) { return rVal1 / Fraction(v2); } template inline std::basic_ostream & operator <<( std::basic_ostream & rStream, const Fraction& rFraction) { rStream << "(" << rFraction.GetNumerator() << "/" << rFraction.GetDenominator() << ")"; return rStream; } #endif /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ lue='distro/lhm/libreoffice-6-1+backports'>distro/lhm/libreoffice-6-1+backports LibreOffice 核心代码仓库文档基金会
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2024-05-20loplugin:ostr in variousNoel Grandin
2024-03-30tdf#146619 Drop unused 'using namespace' in: eventattacher/Gabor Kelemen
2023-05-28Use getXWeak in eventattacherMike Kaganski