integer_constants: Integer constants

In datey: Exact Date and Duration Arithmetic on an Annual Grid

Integer constants

Description

The following integer constants may make code clearer.

Constant	Value	Meaning
valid_years_start	1000L	The first calendar year for a datey
valid_years_end	3000L	The final valid calendar year for a datey (noting that only the start of this year is valid)
valid_duration_years_max	2000L	The maximum valid duration in years for a durationy

Usage

valid_years_start

valid_years_end

valid_duration_years_max

Value

Each of these constants is a scalar integer giving one of the boundaries of the valid datey or durationy range described above.

See Also

is_NA, NAs, datey, all_of_time

Examples

  datey(valid_years_start - 0.001, strict = FALSE)
  datey(valid_years_start)
  datey(valid_years_end)
  datey(valid_years_end + 0.001, strict = FALSE)
  durationy(-(valid_duration_years_max + 0.001), strict = FALSE)

datey documentation built on July 14, 2026, 5:06 p.m.