IRational.h

/*******************************************************************************
 * Copyright (c) 2024, 2026, Olivier Ayache.  All rights reserved.
 *
 * This file is part of AVPKit.
 *
 * AVPKit is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * AVPKit is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with AVPKit.  If not, see <http://www.gnu.org/licenses/>.
 *******************************************************************************/
 
#ifndef IRATIONAL_H_
#define IRATIONAL_H_
 
#include <com/avpkit/ferry/RefCounted.h>
#include <com/avpkit/core/AVPKit.h>
 
namespace com { namespace avpkit { namespace core
{
 
  class VS_API_AVPKIT IRational : public com::avpkit::ferry::RefCounted
  {
  public:
    
    virtual int32_t getNumerator()=0;
    
    virtual int32_t getDenominator()=0;
 
    virtual IRational * copy()=0;
 
    virtual int32_t compareTo(IRational*other)=0;
    
    static int32_t sCompareTo(IRational *a, IRational *b);
 
    virtual double getDouble()=0;
 
    virtual int32_t reduce(int64_t num, int64_t den, int64_t max)=0;
    
    static int32_t sReduce(IRational *dst, int64_t num,
        int64_t den, int64_t max);
 
    virtual IRational* multiply(IRational *arg)=0;
    
    static IRational* sMultiply(IRational* a, IRational*b);
 
    virtual IRational* divide(IRational *arg)=0;
 
    static IRational* sDivide(IRational *a, IRational* b);
 
    virtual IRational* subtract(IRational *arg)=0;
    static IRational* sSubtract(IRational *a, IRational* b);
 
    virtual IRational* add(IRational *arg)=0;
    static IRational* sAdd(IRational *a, IRational* b);
 
    virtual int64_t rescale(int64_t origValue, IRational* origBase)=0;
 
    static int64_t sRescale(int64_t origValue, IRational* origBase, IRational* newBase);
    
    static IRational *make();
    
    static IRational *make(double d);
    static IRational* make(IRational *src);
 
    static IRational *make(int32_t num, int32_t den);
 
    /*
     * Added for 3.1
     */
    
    typedef enum Rounding {
        ROUND_ZERO     = 0,
        ROUND_INF      = 1,
        ROUND_DOWN     = 2,
        ROUND_UP       = 3,
        ROUND_NEAR_INF = 5,
    } Rounding;
    virtual int64_t rescale(int64_t origValue,
        IRational* origBase,
        Rounding rounding)=0;
 
    static int64_t sRescale(int64_t origValue,
        IRational* origBase, IRational* newBase,
        Rounding rounding);
 
    /*
     * Added for 3.2
     */
    
    static int64_t rescale(int64_t srcValue,
        int32_t dstNumerator,
        int32_t dstDenominator,
        int32_t srcNumerator,
        int32_t srcDenominator,
        Rounding rounding);
 
  protected:
    IRational();
    virtual ~IRational();
    
  public:
    /*
     * Added for 3.2
     */
   
   virtual void setNumerator(int32_t value)=0;
 
   
   virtual void setDenominator(int32_t value)=0;
   
   virtual void setValue(double value)=0;
 
   virtual double getValue()=0;
 
   virtual bool isFinalized()=0;
   
   virtual void init()=0;
  };
 
}}}
 
#endif /*IRATIONAL_H_*/