private void OnUndoPressed(object sender, EventArgs e)
{
sbInBound.Clear();
InBound.Clear();
this.FindByName <Label>("Input").Text = string.Empty;
Fraction_class workFraction = new Fraction_class();
workFraction.SetValueTo(Accumulator);
Accumulator.SetValueTo(UndoAccum);
sbAccumulator.Clear();
if (displayToggle == DisplayToggle.floating)
{
sbAccumulator.Append(Accumulator.ToDisplayFloat(" "));
}
else
{
sbAccumulator.Append(Accumulator.ToDisplayFraction(" "));
}
this.FindByName <Label>("Result").Text = sbAccumulator.ToString();
lastOperator = ' ';
UndoAccum.SetValueTo(workFraction); // next undo will circle back
}
internal void SetValueTo(Fraction_class inBound)
{
fractionSign = inBound.fractionSign;
wholeNumber = inBound.wholeNumber;
numerator = inBound.numerator;
denominator = inBound.denominator;
}
public void Modulus(Fraction_class inbound)
{
try
{
double dbl = this.ToFloat() % inbound.ToFloat();
this.Parse(dbl.ToString());
}
catch (Exception e0)
{
//
}
}
//internal void DivideBy(Fraction_class inBound)
public void DivideBy(Fraction_class inBound)
{
inBound.ToSimpleFraction();
this.ToSimpleFraction();
this.denominator = inBound.numerator * this.denominator;
this.numerator = inBound.denominator * this.numerator;
fractionSign = wholeNumber < 0 || numerator < 0 ? Sign.negative : Sign.positive;
this.Reduce();
}
internal void Add(Fraction_class inBound)
{
inBound.ToSimpleFraction();
this.ToSimpleFraction();
this.numerator =
(inBound.numerator * this.denominator) + (this.numerator * inBound.denominator);
this.denominator =
(inBound.denominator * this.denominator);
this.Reduce();
}
// internal void Subtract(Fraction_class inBound)
public void Subtract(Fraction_class inBound)
{
inBound.ToSimpleFraction();
this.ToSimpleFraction();
this.numerator =
(this.numerator * inBound.denominator) - (inBound.numerator * this.denominator);
this.denominator =
(inBound.denominator * this.denominator);
fractionSign = wholeNumber < 0 || numerator < 0 ? Sign.negative : Sign.positive;
this.Reduce();
}
