; SPDX-License-Identifier: MIT ; Portable ISO-8601 calendar library (date-only, no timezone). ; Convention: IsoDate = string "YYYY-MM-DD" ; ; Modules: ; IsoDate/DateMath.rgr — addDays, compareIso, isBetween ; IsoDate/IsoDateParse.rgr — toIsoDateOnly, datePartsToISO ; IsoDate/IsoCalendar.rgr — ISO week, day-of-week ; ; Compiler intrinsics (Lang.rgr): iso_add_days, iso_compare, iso_between ; Prefer DateMath.addDays in library code; intrinsics optimize hot paths per target. Import "IsoDate/DateMath.rgr" Import "IsoDate/IsoDateParse.rgr" Import "IsoDate/IsoCalendar.rgr"