/* -*- 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_BIGINT_HXX #define INCLUDED_TOOLS_BIGINT_HXX #include #include #include #define MAX_DIGITS 8 class SAL_WARN_UNUSED TOOLS_DLLPUBLIC BigInt { private: // we only use one of these two fields at a time union { sal_Int32 nVal; sal_uInt16 nNum[MAX_DIGITS]; }; sal_uInt8 nLen : 5; // current length, if 0, data is in nVal, otherwise data is in nNum bool bIsNeg : 1; // Is Sign negative? TOOLS_DLLPRIVATE void MakeBigInt(BigInt const &); TOOLS_DLLPRIVATE void Normalize(); TOOLS_DLLPRIVATE void Mult(BigInt const &, sal_uInt16); TOOLS_DLLPRIVATE void Div(sal_uInt16, sal_uInt16 &); TOOLS_DLLPRIVATE bool IsLess(BigInt const &) const; TOOLS_DLLPRIVATE void AddLong(BigInt &, BigInt &); TOOLS_DLLPRIVATE void SubLong(BigInt &, BigInt &); TOOLS_DLLPRIVATE void MultLong(BigInt const &, BigInt &) const; TOOLS_DLLPRIVATE void DivLong(BigInt const &, BigInt &) const; TOOLS_DLLPRIVATE void ModLong(BigInt const &, BigInt &) const; TOOLS_DLLPRIVATE bool ABS_IsLess(BigInt const &) const; public: BigInt() : nVal(0) , nLen(0) , bIsNeg(false) { } BigInt(sal_Int32 nValue) : nVal(nValue) , nLen(0) , bIsNeg(false) { } #if SAL_TYPES_SIZEOFLONG == 4 BigInt(int nValue) : nVal(nValue) , nLen(0) , bIsNeg(false) { } #endif BigInt( double nVal ); BigInt( sal_uInt32 nVal ); BigInt( sal_Int64 nVal ); BigInt( const BigInt& rBigInt ); BigInt( std::u16string_view rString ); operator sal_Int16() const; operator sal_uInt16() const; operator sal_Int32() const; operator sal_uInt32() const; operator double() const; #if SAL_TYPES_SIZEOFPOINTER == 8 operator tools::Long() const; #endif bool IsNeg() const; bool IsZero() const; bool IsLong() const { return nLen == 0; } void Abs(); BigInt& operator =( const BigInt& rVal ); BigInt& operator +=( const BigInt& rVal ); BigInt& operator -=( const BigInt& rVal ); BigInt& operator *=( const BigInt& rVal ); BigInt& operator /=( const BigInt& rVal ); BigInt& operator %=( const BigInt& rVal ); BigInt& operator =( sal_Int32 nValue ); /* Scale and round value */ static tools::Long Scale(tools::Long nVal, tools::Long nMult, tools::Long nDiv); friend inline BigInt operator +( const BigInt& rVal1, const BigInt& rVal2 ); friend inline BigInt operator -( const BigInt& rVal1, const BigInt& rVal2 ); friend inline BigInt operator *( const BigInt& rVal1, const BigInt& rVal2 ); friend inline BigInt operator /( const BigInt& rVal1, const BigInt& rVal2 ); friend inline BigInt operator %( const BigInt& rVal1, const BigInt& rVal2 ); TOOLS_DLLPUBLIC friend bool operator==( const BigInt& rVal1, const BigInt& rVal2 ); friend inline bool operator!=( const BigInt& rVal1, const BigInt& rVal2 ); TOOLS_DLLPUBLIC friend bool operator< ( const BigInt& rVal1, const BigInt& rVal2 ); friend inline bool operator> ( const BigInt& rVal1, const BigInt& rVal2 ); friend inline bool operator<=( const BigInt& rVal1, const BigInt& rVal2 ); friend inline bool operator>=( const BigInt& rVal1, const BigInt& rVal2 ); friend class Fraction; }; inline BigInt::operator sal_Int16() const { if ( nLen == 0 && nVal >= SAL_MIN_INT16 && nVal <= SAL_MAX_INT16 ) return static_cast(nVal); assert(false && "out of range"); return 0; } inline BigInt::operator sal_uInt16() const { if ( nLen == 0 && nVal >= 0 && nVal <= SAL_MAX_UINT16 ) return static_cast(nVal); assert(false && "out of range"); return 0; } inline BigInt::operator sal_Int32() const { if (nLen == 0) return nVal; assert(false && "out of range"); return 0; } inline BigInt::operator sal_uInt32() const { if ( nLen == 0 && nVal >= 0 ) return static_cast(nVal); assert(false && "out of range"); return 0; } #if SAL_TYPES_SIZEOFPOINTER == 8 inline BigInt::operator tools::Long() const { // Clamp to int32 since long is int32 on Windows. if (nLen == 0) return nVal; assert(false && "out of range"); return 0; } #endif inline BigInt& BigInt::operator =( sal_Int32 nValue ) { nLen = 0; nVal = nValue; return *this; } inline bool BigInt::IsNeg() const { if ( nLen == 0 ) return (nVal < 0); else return bIsNeg; } inline bool BigInt::IsZero() const { if ( nLen != 0 ) return false; else return (nVal == 0); } inline void BigInt::Abs() { if ( nLen != 0 ) bIsNeg = false; else if ( nVal < 0 ) nVal = -nVal; } inline BigInt operator+( const BigInt &rVal1, const BigInt &rVal2 ) { BigInt aErg( rVal1 ); aErg += rVal2; return aErg; } inline BigInt operator-( const BigInt &rVal1, const BigInt &rVal2 ) { BigInt aErg( rVal1 ); aErg -= rVal2; return aErg; } inline BigInt operator*( const BigInt &rVal1, const BigInt &rVal2 ) { BigInt aErg( rVal1 ); aErg *= rVal2; return aErg; } inline BigInt operator/( const BigInt &rVal1, const BigInt &rVal2 ) { BigInt aErg( rVal1 ); aErg /= rVal2; return aErg; } inline BigInt operator%( const BigInt &rVal1, const BigInt &rVal2 ) { BigInt aErg( rVal1 ); aErg %= rVal2; return aErg; } inline bool operator!=( const BigInt& rVal1, const BigInt& rVal2 ) { return !(rVal1 == rVal2); } inline bool operator>(const BigInt& rVal1, const BigInt& rVal2) { return rVal2 < rVal1; } inline bool operator<=( const BigInt& rVal1, const BigInt& rVal2 ) { return !( rVal1 > rVal2); } inline bool operator>=( const BigInt& rVal1, const BigInt& rVal2 ) { return !(rVal1 < rVal2); } #endif /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ ce-7-6+backports'>distro/lhm/libreoffice-7-6+backports LibreOffice 核心代码仓库文档基金会
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