mirror of https://gitlab.com/rnger/amath
69 lines
2.5 KiB
C++
69 lines
2.5 KiB
C++
/*-
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* Copyright (c) 2014-2018 Carsten Sonne Larsen <cs@innolan.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Project homepage:
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* https://amath.innolan.net
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*
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*/
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#ifndef AMATH_NUMERAL_POSITIONAL_H
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#define AMATH_NUMERAL_POSITIONAL_H
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#include "ntext.h"
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/**
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* @brief Base class for all numeral systems with a positional notation
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* @details
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* More info on positional notation is available at Wikipedia:
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* https://wikipedia.org/wiki/Positional_notation
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*/
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class PositionalNumeralSystem : public NumeralSystem
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{
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public:
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PositionalNumeralSystem(unsigned int base, unsigned int digits, const char fractionPoint);
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~PositionalNumeralSystem();
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virtual const char* GetName();
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virtual const char* GetPrefix();
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virtual unsigned int GetDigits();
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virtual void SetDigits(unsigned int digits);
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virtual const char GetFractionPoint();
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virtual void SetFractionPoint(const char fractionPoint);
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virtual const char* GetText(Number* number);
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virtual Number* Parse(const char* text, unsigned int* length, char** end);
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protected:
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const char* GetSpecialCase(Number *number);
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void IntegerToBuffer(double value, unsigned int digits, int* outdigits) const;
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double base;
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unsigned int digits;
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char fractionPoint;
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private:
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const char* GetText(double number) const;
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};
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#endif
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