private double DoCalcAtomic(string atomocEq)
{
double left = Convert.ToDouble(atomocEq.Split(';')[0].Replace(EnumData.GetEnumDescription(EOperators.op_negative), "-"));
double right = Convert.ToDouble(atomocEq.Split(';')[2].Replace(EnumData.GetEnumDescription(EOperators.op_negative), "-"));
string op = atomocEq.Split(';')[1];
if (op.Equals(EnumData.GetEnumDescription(EOperators.op_add)))
{
return(left + right);
}
else if (op.Equals(EnumData.GetEnumDescription(EOperators.op_sub)))
{
return(left - right);
}
else if (op.Equals(EnumData.GetEnumDescription(EOperators.op_mul)))
{
return(left * right);
}
else if (op.Equals(EnumData.GetEnumDescription(EOperators.op_div)))
{
return(left / right);
}
else if (op.Equals(EnumData.GetEnumDescription(EOperators.op_pow_x)))
{
return(Math.Pow(left, right));
}
else if (op.Equals(EnumData.GetEnumDescription(EOperators.op_root_x)))
{
return(Math.Pow(right, 1.0 / left));
}
else
{
return(0);
}
}
private bool CheckInput()
{
_userinput = _userinput.Replace(EnumData.GetEnumDescription(EOperators.op_mul), ";" + EnumData.GetEnumDescription(EOperators.op_mul) + ";");
_userinput = _userinput.Replace(EnumData.GetEnumDescription(EOperators.op_div), ";" + EnumData.GetEnumDescription(EOperators.op_div) + ";");
_userinput = _userinput.Replace(EnumData.GetEnumDescription(EOperators.op_add), ";" + EnumData.GetEnumDescription(EOperators.op_add) + ";");
_userinput = _userinput.Replace(EnumData.GetEnumDescription(EOperators.op_sub), ";" + EnumData.GetEnumDescription(EOperators.op_sub) + ";");
_userinput = _userinput.Replace(EnumData.GetEnumDescription(EOperators.op_pow_2), ";" + EnumData.GetEnumDescription(EOperators.op_pow_x) + ";2;");
_userinput = _userinput.Replace(EnumData.GetEnumDescription(EOperators.op_pow_x), ";" + EnumData.GetEnumDescription(EOperators.op_pow_x) + ";");
_userinput = _userinput.Replace(EnumData.GetEnumDescription(EOperators.op_root_2), ";2;" + EnumData.GetEnumDescription(EOperators.op_root_x) + ";");
_userinput = _userinput.Replace(EnumData.GetEnumDescription(EOperators.op_root_x), ";" + EnumData.GetEnumDescription(EOperators.op_root_x) + ";");
_userinput = _userinput.Replace(";;", ";");
if (_userinput.StartsWith(";"))
{
_userinput = _userinput.Remove(0, 1);
}
if (_userinput.EndsWith(";"))
{
_userinput = _userinput.Remove(_userinput.Length - 1);
}
string[] inputSplit = _userinput.Split(';');
if (inputSplit.Length == 1 && !IsNumber(inputSplit[0]))
{
return(false);
}
else if (inputSplit.Length % 2 == 0)
{
return(false);
}
else
{
for (int i = 0; i < inputSplit.Length - 2; i += 2)
{
if (!IsNumber(inputSplit[i]))
{
return(false);
}
if (IsNumber(inputSplit[i + 1]))
{
return(false);
}
if (!IsNumber(inputSplit[i + 2]))
{
return(false);
}
}
}
return(true);
}
private string DoCalc()
{
string op = "";
string atomicOp = "";
while (!IsNumber(_userinput))
{
#region nth root exponentiation and
// if contains both then check which is first from left
if (_userinput.Contains(EnumData.GetEnumDescription(EOperators.op_root_x)) && _userinput.Contains(EnumData.GetEnumDescription(EOperators.op_pow_x)))
{
if (_userinput.IndexOf(EnumData.GetEnumDescription(EOperators.op_root_x)) < _userinput.IndexOf(EnumData.GetEnumDescription(EOperators.op_pow_x)))
{
op = EnumData.GetEnumDescription(EOperators.op_root_x);
}
else
{
op = EnumData.GetEnumDescription(EOperators.op_pow_x);
}
}
// if contains only nth root
else if (_userinput.Contains(EnumData.GetEnumDescription(EOperators.op_root_x)))
{
op = EnumData.GetEnumDescription(EOperators.op_root_x);
}
// if contains only exponentiation
else if (_userinput.Contains(EnumData.GetEnumDescription(EOperators.op_pow_x)))
{
op = EnumData.GetEnumDescription(EOperators.op_pow_x);
}
#endregion
#region multiplication and division
// if contains both then check which is first from left
else if (_userinput.Contains(EnumData.GetEnumDescription(EOperators.op_mul)) && _userinput.Contains(EnumData.GetEnumDescription(EOperators.op_div)))
{
if (_userinput.IndexOf(EnumData.GetEnumDescription(EOperators.op_mul)) < _userinput.IndexOf(EnumData.GetEnumDescription(EOperators.op_div)))
{
op = EnumData.GetEnumDescription(EOperators.op_mul);
}
else
{
op = EnumData.GetEnumDescription(EOperators.op_div);
}
}
// if contains only multiplication
else if (_userinput.Contains(EnumData.GetEnumDescription(EOperators.op_mul)))
{
op = EnumData.GetEnumDescription(EOperators.op_mul);
}
// if contains only division
else if (_userinput.Contains(EnumData.GetEnumDescription(EOperators.op_div)))
{
op = EnumData.GetEnumDescription(EOperators.op_div);
}
#endregion
#region addition and subtraction
// if contains both then check which is first from left
else if (_userinput.Contains(EnumData.GetEnumDescription(EOperators.op_add)) && _userinput.Contains(EnumData.GetEnumDescription(EOperators.op_sub)))
{
if (_userinput.IndexOf(EnumData.GetEnumDescription(EOperators.op_add)) < _userinput.IndexOf(EnumData.GetEnumDescription(EOperators.op_sub)))
{
op = EnumData.GetEnumDescription(EOperators.op_add);
}
else
{
op = EnumData.GetEnumDescription(EOperators.op_sub);
}
}
// if contains only addition
else if (_userinput.Contains(EnumData.GetEnumDescription(EOperators.op_add)))
{
op = EnumData.GetEnumDescription(EOperators.op_add);
}
// if contains only subtraction
else if (_userinput.Contains(EnumData.GetEnumDescription(EOperators.op_sub)))
{
op = EnumData.GetEnumDescription(EOperators.op_sub);
}
#endregion
atomicOp = TakeAtomocEq(_userinput, op);
_userinput = _userinput.Replace(atomicOp, DoCalcAtomic(atomicOp).ToString());
}
return(_userinput);
}
private bool IsNumber(string input)
{
double n;
return(double.TryParse(input.Replace(EnumData.GetEnumDescription(EOperators.op_negative), "-"), out n));
}