| public static Create ( Function num, Function denom ) : Function | ||
| num | Function | |
| denom | Function | |
| return | Function | |
public override Function Multiply(Function f)
{
if (f is Fraction)
{
Fraction frac = f as Fraction;
return(Fraction.Create(this.num * frac.num, this.denom * frac.denom));
}
return(Fraction.Create(this.num * f, this.denom));
}
public override Function Divide(Function f)
{
if (f is Fraction)
{
Fraction frac = f as Fraction;
return(Fraction.Create(this.num * frac.denom, this.denom * frac.num));
}
return(Fraction.Create(this.num, this.denom * f));
}
/// <summary>
/// 除算。
/// </summary>
/// <param name="f">オペランド</param>
/// <returns>除算結果</returns>
public virtual Function Divide(Function f)
{
Constant c = f as Constant;
if (c != null)
{
return(new Multiple(1 / c.Value, this));
}
return(Fraction.Create(this, f));
}
public override Function Optimize()
{
Function num = this.num.Optimize();
Function denom = this.denom.Optimize();
if (num.Equals(denom))
{
return((Constant)1);
}
return(Fraction.Create(num, denom));
}
public override Function Bind(params Parameter[] x)
{
Function num = this.num.Bind(x);
Function denom = this.denom.Bind(x);
if (denom is Constant)
{
Constant c = denom as Constant;
ValueType val = 1 / c.Value;
if (num is Constant)
{
c = num as Constant;
val *= c.Value;
return((Constant)val);
}
c = (Constant)val;
return(c * num);
}
return(Fraction.Create(num, denom));
}