fixed.h

Go to the documentation of this file.

/***************************************************************************
 *   Author: Philip Erdelsky's <pje@efgh.com>                              *
 *   http://efgh.com/software/fixed.htm                                    *
 *   Licence: Public Domain                                                *
 *   December 2, 1998                                                      *
 *   Modified by: Tomeu Borras Riera.                                      *
 ***************************************************************************/

#ifndef H__FIXED
#define H__FIXED

#include <QString>
#include <QChar>


const int MAX_FIXED_PRECISION = 12;
const int MAX_FIXED_LENGTH = 25;

typedef long long int Fixed_numerator;

inline long long int integer(Fixed_numerator x) {
    return (int) x;
}


class Fixed {

private:
    void fromFixed(const char *);

public:
    Fixed_numerator value;
    int precision;
    void equalize_precision(Fixed &);
    void setprecision(int);

public:
    Fixed(int x, int p);
    Fixed(QString a);
    Fixed(const char *a);
    Fixed();
    Fixed operator [] (int) const;
    Fixed operator = (Fixed);
    Fixed operator = (int);
    QString toQString(QChar separadorDecimal = ',');
    friend Fixed operator + (Fixed, Fixed);
    friend Fixed operator - (Fixed, Fixed);
    friend Fixed operator * (Fixed, Fixed);
    friend Fixed operator / (Fixed, Fixed);
    friend Fixed operator - (Fixed);
    friend bool operator == (Fixed, Fixed);
    friend bool operator < (Fixed, Fixed);
    friend Fixed operator - (int, Fixed);
    friend Fixed operator / (int, Fixed);
    friend bool operator == (int, Fixed);
    friend bool operator < (int, Fixed);
    friend Fixed operator + (Fixed, int);
    friend Fixed operator - (Fixed, int);
    friend Fixed operator * (Fixed, int);
    friend Fixed operator / (Fixed, int);
    friend bool operator == (Fixed, int);
    friend bool operator < (Fixed, int);
    enum {ALIGN = 1, COMMAS = 2, DECIMAL = 4};
};


inline bool operator != (Fixed x, Fixed y) {
    return !(x == y);
}


inline bool operator != (Fixed x, int y) {
    return !(x == y);
}


inline bool operator != (int x, Fixed y) {
    return !(x == y);
}


inline bool operator >= (Fixed x, Fixed y) {
    return !(x < y);
}


inline bool operator >= (Fixed x, int y) {
    return !(x < y);
}


inline bool operator >= (int x, Fixed y) {
    return !(x < y);
}


inline bool operator > (Fixed x, Fixed y) {
    return y < x;
}


inline bool operator > (Fixed x, int y) {
    return y < x;
}


inline bool operator > (int x, Fixed y) {
    return y < x;
}


inline bool operator <= (Fixed x, Fixed y) {
    return !(y < x);
}


inline bool operator <= (Fixed x, int y) {
    return !(y < x);
}


inline bool operator <= (int x, Fixed y) {
    return !(y < x);
}

#endif

---