EPPlus/FormulaParsing/Excel/Functions/Math/Ln.cs

using System.Collections.Generic;
using OfficeOpenXml.FormulaParsing.ExpressionGraph;

namespace OfficeOpenXml.FormulaParsing.Excel.Functions.Math;

public class Ln : ExcelFunction {
  public override CompileResult Execute(
      IEnumerable<FunctionArgument> arguments,
      ParsingContext context) {
    ValidateArguments(arguments, 1);
    var arg = ArgToDecimal(arguments, 0);
    return CreateResult(System.Math.Log(arg, System.Math.E), DataType.Decimal);
  }
}