private static FractionalNumber Create(int numerator, int denumerator)
{
FractionalNumber n = new FractionalNumber();
int gcd = Utils.GreatestCommonDivisor(Math.Abs(numerator), Math.Abs(denumerator));
int sign = Math.Sign(denumerator);
n.Numerator = numerator / gcd * sign;
n.Denominator = denumerator / gcd * sign;
return(n);
}
public static FractionalNumber operator -(int f2, FractionalNumber f1)
{
FractionalNumber n = new FractionalNumber();
int numerator = f2 * f1.Denominator - f1.Numerator;
n.Numerator = numerator;
n.Denominator = f1.Denominator;
return(n);
}
public FractionalNumber(int numerator, int denumerator)
{
if (denumerator == 0)
{
throw new DivideByZeroException();
}
if (numerator == 0)
{
Numerator = 0;
Denominator = 1;
return;
}
FractionalNumber n = Create(numerator, denumerator);
Numerator = n.Numerator;
Denominator = n.Denominator;
}
public FractionalNumber(FractionalNumber n)
{
Numerator = n.Numerator;
Denominator = n.Denominator;
}
public static FractionalNumber LineInterpolation(FractionalNumber first, FractionalNumber last, FractionalNumber coef)
{
return((first > last) ? coef * first + (1 - coef) * last : coef *last + (1 - coef) * first);
}
