DLLNEWTON/intervalarithmetic.h at master · plotkabytes/DLLNEWTON · GitHub

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/*
 * IntervalArithmetic.h
 *
 *  Created on: 20-11-2012
 *      Author: Tomasz Hoffmann and Andrzej Marciniak
 *
 *  Before you start use module, please install libraries:
 *  	- .boost ( http://www.boost.org/ )
 *  	- GNU MPFR ( http://www.mpfr.org/ )
 */

#ifndef INTERVALARITHMETIC_H_
#define INTERVALARITHMETIC_H_
#include <iostream>
#include <string>
#include <sstream>
#include <exception>
#include <fenv.h>
#include <stdlib.h>
#include <stdint.h>
#include <mpfr.h>
#include <boost/lexical_cast.hpp>
#include <gmp.h>

using namespace std;

/*
 * */

namespace intervalarth
{

struct interval
{
    long double a, b;
};

//set precision
const int curr_precision = 80;

// store the original rounding mode
const int originalRounding = fegetround();
const char DecimalSeparator = '.';

class IntervalArithmetic
{
public:
    IntervalArithmetic();
    virtual ~IntervalArithmetic();
    long double IntWidth(const interval& x);
    interval IAdd(const interval& x, const interval& y);
    interval ISub(const interval& x, const interval& y);
    interval IMul(const interval& x, const interval& y);
    interval IDiv(const interval& x, const interval& y);
    long double DIntWidth(const interval& x);
    interval Projection(const interval& x);
    interval Opposite(const interval& x);
    interval Inverse(const interval& x);
    interval DIAdd(const interval& x, const interval& y);
    interval DISub(const interval& x, const interval& y);
    interval DIMul(const interval& x, const interval& y);
    interval DIDiv(const interval& x, const interval& y);
    interval IntRead(const string& sa);
    long double LeftRead(const string& sa);
    long double RightRead(const string& sa);
    interval ISin(const interval& x, int& st);
    interval ICos(const interval& x, int& st);
    interval IExp(const interval& x, int& st);
    interval ISqr(const interval& x, int& st);
    interval ISqr2();
    interval ISqr3();
    interval IPi();
    void IEndsToStrings(const interval& i, string& left, string& right);
};

} /* namespace interval */
#endif /* INTERVALARITHMETIC_H_ */