module Period: sig .. end
A period is the number of days between two dates.
Arithmetic operations
include Period.S
Constructors
val make : int -> int -> int -> Date_sig.S.t
make year month day makes a period of the specified length.
val lmake : ?year:int -> ?month:int -> ?day:int -> unit -> Date_sig.S.t
Labelled version of make.
The default value of each argument is 0.
val year : int -> Date_sig.S.t
year n makes a period of n years.
val month : int -> Date_sig.S.t
month n makes a period of n months.
val week : int -> Date_sig.S.t
week n makes a period of n weeks.
val day : int -> Date_sig.S.t
day n makes a period of n days.
Getters
exception Not_computable
Since 1.04
val nb_days : Date_sig.S.t -> int
Number of days in a period.
Since 1.04
Raises Not_computable if the number of days is not computable.
Examples:nb_days (year 1) raises Not_computable because a year is
not a constant number of days.
nb_days (day 6) returns 6
val ymd : Date_sig.S.t -> int * int * int
Number of years, months and days in a period.
Since 1.09.0
Example: ymd (make 1 2 3) returns 1, 2, 3.