FinanceDate
Functions
fnadd_daysadd_days(date : Date, days : {Int | _ >= -3652058 && _ <= 3652058}) : Result(Date, FinanceError.Error)#
Bounded civil-day arithmetic; rejects results outside the supported year range.
Strict Gregorian YYYY-MM-DD, years 0001 through 9999. No market calendar assumptions.