gcc/ada/a-calari.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --              A D A . C A L E N D A R . A R I T H M E T I C               --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --        Copyright (C) 2005 - 2006, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- This specification is derived from the Ada Reference Manual for use with --
  12 -- GNAT. The copyright notice above, and the license provisions that follow --
  13 -- apply solely to the  contents of the part following the private keyword. --
  14 --                                                                          --
  15 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
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  20 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  21 -- for  more details.  You should have  received  a copy of the GNU General --
  22 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
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  24 -- MA 02111-1307, USA.                                                      --
  25 --                                                                          --
  26 -- As a special exception,  if other files  instantiate  generics from this --
  27 -- unit, or you link  this unit with other files  to produce an executable, --
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  31 -- covered by the  GNU Public License.                                      --
  32 --                                                                          --
  33 -- GNAT was originally developed  by the GNAT team at  New York University. --
  34 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  35 --                                                                          --
  36 ------------------------------------------------------------------------------
  37
  38 package Ada.Calendar.Arithmetic is
  39
  40    --  Arithmetic on days:
  41
  42    type Day_Count is range
  43      -(366 * (1 + Year_Number'Last - Year_Number'First))
  44         ..
  45      +(366 * (1 + Year_Number'Last - Year_Number'First));
  46
  47    subtype Leap_Seconds_Count is Integer range -2047 .. 2047;
  48
  49    procedure Difference
  50      (Left, Right  : Time;
  51       Days         : out Day_Count;
  52       Seconds      : out Duration;
  53       Leap_Seconds : out Leap_Seconds_Count);
  54
  55    function "+" (Left : Time; Right : Day_Count) return Time;
  56    function "+" (Left : Day_Count; Right : Time) return Time;
  57    function "-" (Left : Time; Right : Day_Count) return Time;
  58    function "-" (Left, Right : Time) return Day_Count;
  59
  60 end Ada.Calendar.Arithmetic;