This library provides Math for string variables and can do arithmetic operations for very long numbers Supports negative numbers, decimal operations and you can set how many decimal points you want in division operations Examples:
"7239472981274798.87239459279872".Multiply("17723857239874.1482375987239") = "128311385612040627990484885784.177537750009676796001553408"
"7239472981274798.87239459279872".Sum("17723857239874.1482375987239") = "7257196838514673.02063219152262"
"17723857239874.87239459279872".Minus("7239472981274798.1482375987239" = "-7221749124034923.27584300592518"
"17723857239874.87239459279872".Divide("7239472981274798.1482375987239", 100) = "0.0024482247928431221193959077254621363728526057698349342478908952045545664010797198416962326310985737"
Factorial can be calculated for any number:
public static string Factorial(this string num) { if (num.Sign() == 0 || num.FixNumber() == "1") return "1";
return num.Multiply(num.Minus("1", true).Factorial());
}
100! = "257182031095525112107857249934597388918419224714455526533820998388496472644482792132224051962512451185663850090463028434334174412800000000000000000000000"