public NumericValue Root(NumericValue rootObj)
{
VerifyNoUnits();
var root = (int)rootObj.GetInteger;
var f = GetFloat;
if (root % 2 == 1) // Odd roots
{
return(new NumericValue(f >= 0 ? Math.Pow(f, 1.0 / root) : -Math.Pow(-f, 1.0 / root), Units));
}
else if (f >= 0) // Even roots, val >= 0
{
return(new NumericValue(Math.Pow(f, 1.0 / root), Units));
}
throw new Exception("Invalid root");
}
public static string Reduce(NumericValue numerator, NumericValue denominator)
{
if ((numerator.Units.HasUnits) || (numerator.Units.HasUnits))
{
throw new Exception("Inputs cannot have units");
}
var num = numerator.Abs().GetInteger;
var den = denominator.Abs().GetInteger;
if ((num == 0) || (den == 0))
{
throw new Exception("Factors cannot be 0");
}
var gcf = Helpers.GCF(num, den);
return($"{num / gcf}/{den / gcf}");
}
public NumericValue Exp(NumericValue exponentVal)
{
exponentVal.VerifyNoUnits("Exponent cannot have units.");
if (!exponentVal.IsInteger)
{
VerifyNoUnits("Base can only have units for positive integer exponents.");
return(new NumericValue(Math.Pow(GetFloat, exponentVal.GetFloat)));
}
var exponent = exponentVal.IntValue;
object result;
if ((exponent >= 0) && (IsInteger))
{
result = BigInteger.Pow(GetInteger, exponent);
}
else
{
result = Math.Pow(GetFloat, exponent);
}
return(new NumericValue(result, Units ^ exponent));
}
public override object VisitMethod(ExpressionParser.MethodContext context)
{
var method = context.method.Text;
var paramList = context.e().Select(c => Visit(c)).ToList();
switch (method.ToLowerInvariant())
{
case "abs": return(GetNumeric(paramList[0]).Abs());
case "acos": return(GetNumeric(paramList[0]).Acos());
case "asin": return(GetNumeric(paramList[0]).Asin());
case "atan": return(paramList.Count == 2 ? NumericValue.Atan2(GetNumeric(paramList[1]), GetNumeric(paramList[0])) : GetNumeric(paramList[0]).Atan());
case "cos": return(GetNumeric(paramList[0]).Cos());
case "date": return(new NumericValue(new DateTimeOffset(DateTime.Now.Date, DateTimeOffset.Now.Offset).UtcTicks, "ticks"));
case "directoryname": return(GetDirectoryName(GetString(paramList[0])));
case "eval": return(new NEExpression(GetString(paramList[0])).InternalEvaluate(variables, row, unit));
case "extension": return(GetExtension(GetString(paramList[0])));
case "factor": return(GetNumeric(paramList[0]).Factor());
case "filename": return(GetFileName(GetString(paramList[0])));
case "filenamewithoutextension": return(GetFileNameWithoutExtension(GetString(paramList[0])));
case "fromdate": return(FromDate(GetString(paramList[0])));
case "fromwords": return(NumericValue.FromWords(GetString(paramList[0])));
case "gcf": return(NumericValue.GCF(paramList.Select(val => GetNumeric(val)).ToList()));
case "lcm": return(NumericValue.LCM(paramList.Select(val => GetNumeric(val)).ToList()));
case "len": return(GetString(paramList[0]).Length);
case "ln": return(GetNumeric(paramList[0]).Ln());
case "log": return(paramList.Count == 1 ? GetNumeric(paramList[0]).Log() : GetNumeric(paramList[0]).Log(GetNumeric(paramList[2])));
case "max": return(paramList.Select(param => GetNumeric(param)).Max());
case "min": return(paramList.Select(param => GetNumeric(param)).Min());
case "multiple": return(NumericValue.Multiple(GetNumeric(paramList[0]), GetNumeric(paramList[1])));
case "now": return(new NumericValue(DateTimeOffset.Now.UtcTicks, "ticks"));
case "random": return(NumericValue.Random(GetNumeric(paramList[0]), GetNumeric(paramList[1])));
case "reciprocal": return(GetNumeric(paramList[0]).Reciprocal());
case "reduce": return(NumericValue.Reduce(GetNumeric(paramList[0]), GetNumeric(paramList[1])));
case "root": return(GetNumeric(paramList[0]).Root(GetNumeric(paramList[1])));
case "sin": return(GetNumeric(paramList[0]).Sin());
case "sqrt": return(GetNumeric(paramList[0]).Root(GetNumeric(2)));
case "strformat": return(string.Format(GetString(paramList[0]), paramList.Skip(1).Select(param => Simplify(param)).ToArray()));
case "tan": return(GetNumeric(paramList[0]).Tan());
case "tmax": return(paramList.Select(param => GetString(param)).Max());
case "tmin": return(paramList.Select(param => GetString(param)).Min());
case "todate": return(ToDate(GetNumeric(paramList[0]), paramList.Count > 1 ? GetNumeric(paramList[1]) : null));
case "toutcdate": return(ToDate(GetNumeric(paramList[0]), new NumericValue(0, "ticks")));
case "towords": return(GetNumeric(paramList[0]).ToWords());
case "type": return(paramList[0].GetType());
case "utcdate": return(new NumericValue(DateTimeOffset.Now.UtcDateTime.Date.Ticks, "ticks"));
case "valideval": try { new NEExpression(GetString(paramList[0])).InternalEvaluate(variables, row, unit); return(true); } catch { return(false); }
case "validre": return(ValidRE(GetString(paramList[0])));
default: throw new ArgumentException($"Invalid method: {method}");
}
}
public static NumericValue Atan2(NumericValue xOfs, NumericValue yOfs)
{
xOfs.VerifyNoUnits();
yOfs.VerifyNoUnits();
return(new NumericValue(Math.Atan2(xOfs.GetFloat, yOfs.GetFloat), "rad"));
}
public NumericValue Log(NumericValue newBase)
{
VerifyNoUnits();
return(new NumericValue(Math.Log(GetFloat, newBase.GetFloat), Units));
}
public static NumericValue FromWords(string words)
{
var ones = new List <string> {
"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", null, "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"
};
var tens = new List <string> {
null, "ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"
};
var magnitudes = new List <string> {
null, "thousand", "million", "billion", "trillion", "quadrillion", "quintillion", "sextillion", "septillion", "octillion", "nonillion", "decillion", "undecillion", "duodecillion", "tredecillion", "quattuordecillion", "quindecillion", "sexdecillion", "septdecillion", "octodecillion", "novemdecillion", "vigintillion", "unvigintillion", "duovigintillion", "trevigintillion", "quattuorvigintillion", "quinvigintillion", "sexvigintillion", "septvigintillion", "octovigintillion", "novemvigintillion", "trigintillion", "untrigintillion", "duotrigintillion", "googol", "tretrigintillion", "quattuortrigintillion", "quintrigintillion", "sextrigintillion", "septtrigintillion", "octotrigintillion", "novemtrigintillion", "quadragintillion", "unquadragintillion", "duoquadragintillion", "trequadragintillion", "quattuorquadragintillion", "quinquadragintillion", "sexquadragintillion", "septquadragintillion", "octoquadragintillion", "novemquadragintillion", "quinquagintillion", "unquinquagintillion", "duoquinquagintillion", "trequinquagintillion", "quattuorquinquagintillion", "quinquinquagintillion", "sexquinquagintillion", "septquinquagintillion", "octoquinquagintillion", "novemquinquagintillion", "sexagintillion", "unsexagintillion", "duosexagintillion", "tresexagintillion", "quattuorsexagintillion", "quinsexagintillion", "sexsexagintillion", "septsexagintillion", "octosexagintillion", "novemsexagintillion", "septuagintillion", "unseptuagintillion", "duoseptuagintillion", "treseptuagintillion", "quattuorseptuagintillion", "quinseptuagintillion", "sexseptuagintillion", "septseptuagintillion", "octoseptuagintillion", "novemseptuagintillion", "octogintillion", "unoctogintillion", "duooctogintillion", "treoctogintillion", "quattuoroctogintillion", "quinoctogintillion", "sexoctogintillion", "septoctogintillion", "octooctogintillion", "novemoctogintillion", "nonagintillion", "unnonagintillion", "duononagintillion", "trenonagintillion", "quattuornonagintillion", "quinnonagintillion", "sexnonagintillion", "septnonagintillion", "octononagintillion", "novemnonagintillion", "centillion"
};
words = Regex.Replace(Regex.Replace(words.ToLowerInvariant(), "[^0-9.a-z]", " "), "\\s+", " ").Trim();
var tokens = words.Split(' ').Where(str => !string.IsNullOrWhiteSpace(str)).ToList();
double current = 0;
var result = new NumericValue(BigInteger.Zero);
bool negative = false;
using (var itr = tokens.GetEnumerator())
{
while (true)
{
var token = itr.MoveNext() ? itr.Current : null;
if (token == "negative")
{
negative = !negative;
continue;
}
double tokenValue;
if ((token != null) && (double.TryParse(token, out tokenValue)))
{
current += tokenValue;
continue;
}
var onesIndex = token == null ? -1 : ones.IndexOf(token);
if (onesIndex != -1)
{
current += onesIndex;
continue;
}
var tensIndex = token == null ? -1 : tens.IndexOf(token);
if (tensIndex != -1)
{
current += tensIndex * 10;
continue;
}
if (token == "hundred")
{
current *= 100;
continue;
}
var magnitudesIndex = token == null ? 0 : magnitudes.IndexOf(token);
if ((token == null) || (magnitudesIndex != -1))
{
var value = new NumericValue(current);
var magFactor = new NumericValue(1000);
for (var ctr = 0; ctr < magnitudesIndex; ++ctr)
{
value *= magFactor;
}
result += value;
current = 0;
if (token == null)
{
break;
}
continue;
}
throw new Exception("Invalid input");
}
}
if (negative)
{
result = -result;
}
return(result);
}
public static NumericValue Random(NumericValue minValue, NumericValue maxValue) => new NumericValue(random.Next((int)minValue.GetInteger, (int)maxValue.GetInteger + 1));
public NumericValue ShiftRight(NumericValue val2)
{
val2.VerifyNoUnits();
return(new NumericValue(GetInteger >> val2.IntValue, Units));
}
static NumericValue GetSameUnits(NumericValue value, NumericValue unitsValue) => value.Units.Equals(unitsValue.Units) ? value : value.ConvertUnits(unitsValue.Units);
public NumericValue IntDiv(NumericValue divisor) => new NumericValue(GetInteger / divisor.GetInteger, Units / divisor.Units);