Package: Ada.Calendar

Description

GNAT RUN-TIME COMPONENTS

A D A . C A L E N D A R

S p e c

$Revision: 1.11 $

Copyright (C) 1992-1997 Free Software Foundation, Inc.

This specification is derived from the Ada Reference Manual for use with GNAT. The copyright notice above, and the license provisions that follow apply solely to the contents of the part following the private keyword.

GNAT is free software; you can redistribute it and/or modify it under terms of the GNU General Public License as published by the Free Soft- ware Foundation; either version 2, or (at your option) any later ver- sion. GNAT is distributed in the hope that it will be useful, but WITH- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License distributed with GNAT; see file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

As a special exception, if other files instantiate generics from this unit, or you link this unit with other files to produce an executable, this unit does not by itself cause the resulting executable to be covered by the GNU General Public License. This exception does not however invalidate any other reasons why the executable file might be covered by the GNU Public License.

GNAT was originally developed by the GNAT team at New York University. It is now maintained by Ada Core Technologies Inc (http://www.gnat.com).


Header

package Ada.Calendar is
 

Known child units

Ada.Calendar.Delays(package)

Exceptions

Time_Error

Type Summary

Time
Primitive Operations:  "+", "+", "-", "-", "<", "<=", ">", ">=", Clock, Day, Month, Seconds, Split, Time_Of, Year

Other Items:

type Time is private;
Declarations representing limits of allowed local time values. Note that these do NOT constrain the possible stored values of time which may well permit a larger range of times (this is explicitly allowed in Ada 95).

subtype Year_Number  is Integer range 1901 .. 2099;

subtype Month_Number is Integer range 1 .. 12;

subtype Day_Number   is Integer range 1 .. 31;

subtype Day_Duration is Duration range 0.0 .. 86_400.0;

function Clock return Time;

function Year    (Date : Time) return Year_Number;

function Month   (Date : Time) return Month_Number;

function Day     (Date : Time) return Day_Number;

function Seconds (Date : Time) return Day_Duration;

procedure Split
  (Date    : Time;
   Year    : out Year_Number;
   Month   : out Month_Number;
   Day     : out Day_Number;
   Seconds : out Day_Duration);

function Time_Of
  (Year    : Year_Number;
   Month   : Month_Number;
   Day     : Day_Number;
   Seconds : Day_Duration := 0.0)
   return    Time;

function "+" (Left : Time;     Right : Duration) return Time;

function "+" (Left : Duration; Right : Time)     return Time;

function "-" (Left : Time;     Right : Duration) return Time;

function "-" (Left : Time;     Right : Time)     return Duration;

function "<"  (Left, Right : Time) return Boolean;

function "<=" (Left, Right : Time) return Boolean;

function ">"  (Left, Right : Time) return Boolean;

function ">=" (Left, Right : Time) return Boolean;

private

   --  Implementation-defined ...
end Ada.Calendar;