public void ProcessUnOp(CalculatorUnOperations op)
{
input = input ?? 0;
switch (op)
{
case CalculatorUnOperations.Invert:
input = -input;
break;
case CalculatorUnOperations.Reciprocal:
if (input.Value == 0)
{
ComputationError?.Invoke(this, "Division by Zero");
}
else
{
input = 1 / input;
}
break;
case CalculatorUnOperations.Sqr:
input = Math.Pow(input.Value, 2);
break;
case CalculatorUnOperations.Sqrt:
input = Math.Sqrt(input.Value);
break;
case CalculatorUnOperations.Backspace:
if (input < 10)
{
input = 0;
}
else
{
string line = input.Value.ToString().Remove(input.Value.ToString().Length - 1);
input = Convert.ToDouble(line);
}
break;
}
didUpdateValue?.Invoke(this, input.Value, fractionDigits ?? 0);
}
public void TransformInput(CalculatorTransformation t)
{
input = input ?? 0;
switch (t)
{
case CalculatorTransformation.Negate:
input = -input;
break;
case CalculatorTransformation.Percent:
input /= 100;
break;
case CalculatorTransformation.Sqr:
input *= input;
break;
case CalculatorTransformation.Sqrt:
if (input.HasValue && input.Value >= 0)
{
input = Math.Sqrt(input ?? 0);
}
else
{
ComputationError.Invoke(this, "Negative Square");
}
break;
case CalculatorTransformation.Inverse:
if (input.HasValue && input.Value != 0)
{
input = 1 / input;
}
else
{
ComputationError.Invoke(this, "Division by Zero");
}
break;
}
DidUpdateValue?.Invoke(this, input.Value, fractionDigits);
}
public void Compute()
{
switch (this.op)
{
case CalculatorOperation.Add:
result = result + input;
DidUpdateValue?.Invoke(this, result.Value, 0);
ResetInput();
break;
case CalculatorOperation.Div:
if (input.HasValue && input.Value != 0)
{
result = result / input;
DidUpdateValue?.Invoke(this, result.Value, 0);
ResetInput();
}
else
{
ComputationError?.Invoke(this, "Division by Zero");
}
break;
}
}
public void Compute()
{
switch (op)
{
case CalculatorOperations.Add:
result = result + input;
break;
case CalculatorOperations.Sub:
result = result - input;
break;
case CalculatorOperations.Mul:
result = result * input;
break;
case CalculatorOperations.Div:
if (input.HasValue && input.Value == 0)
{
ComputationError?.Invoke(this, "Division by Zero");
return;
}
else
{
result = result / input;
}
break;
case CalculatorOperations.Percent:
result = result * input / 100;
break;
}
didUpdateValue?.Invoke(this, result.Value, 0);
input = null;
}
