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Diffstat (limited to 'gcc-4.2.1/gcc/ada/g-calend.ads')
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diff --git a/gcc-4.2.1/gcc/ada/g-calend.ads b/gcc-4.2.1/gcc/ada/g-calend.ads new file mode 100644 index 000000000..8288635da --- /dev/null +++ b/gcc-4.2.1/gcc/ada/g-calend.ads @@ -0,0 +1,128 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- G N A T . C A L E N D A R -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1999-2005, Free Software Foundation, Inc. -- +-- -- +-- 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, 51 Franklin Street, Fifth Floor, -- +-- Boston, MA 02110-1301, 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. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This package extends Ada.Calendar to handle Hour, Minute, Second, +-- Second_Duration and Day_Of_Week and Day_In_Year from Calendar.Time. +-- Second_Duration precision depends on the target clock precision. +-- +-- GNAT.Calendar provides the same kind of abstraction found in +-- Ada.Calendar. It provides Split and Time_Of to build and split a Time +-- data. And it provides accessor functions to get only one of Hour, Minute, +-- Second, Second_Duration. Other functions are to access more advanced +-- valueas like Day_Of_Week, Day_In_Year and Week_In_Year. + +with Ada.Calendar; +with Interfaces.C; + +package GNAT.Calendar is + + type Day_Name is + (Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday); + + subtype Hour_Number is Natural range 0 .. 23; + subtype Minute_Number is Natural range 0 .. 59; + subtype Second_Number is Natural range 0 .. 59; + subtype Second_Duration is Ada.Calendar.Day_Duration range 0.0 .. 1.0; + subtype Day_In_Year_Number is Positive range 1 .. 366; + subtype Week_In_Year_Number is Positive range 1 .. 53; + + function Hour (Date : Ada.Calendar.Time) return Hour_Number; + function Minute (Date : Ada.Calendar.Time) return Minute_Number; + function Second (Date : Ada.Calendar.Time) return Second_Number; + function Sub_Second (Date : Ada.Calendar.Time) return Second_Duration; + -- Hour, Minute, Sedond and Sub_Second returns the complete time data for + -- the Date (H:M:S.SS). See Ada.Calendar for Year, Month, Day accessors. + -- Second_Duration precision depends on the target clock precision. + + function Day_Of_Week (Date : Ada.Calendar.Time) return Day_Name; + -- Return the day name + + function Day_In_Year (Date : Ada.Calendar.Time) return Day_In_Year_Number; + -- Returns the day number in the year. (1st January is day 1 and 31st + -- December is day 365 or 366 for leap year). + + function Week_In_Year (Date : Ada.Calendar.Time) return Week_In_Year_Number; + -- Returns the week number in the year with Monday as first day of week + + procedure Split + (Date : Ada.Calendar.Time; + Year : out Ada.Calendar.Year_Number; + Month : out Ada.Calendar.Month_Number; + Day : out Ada.Calendar.Day_Number; + Hour : out Hour_Number; + Minute : out Minute_Number; + Second : out Second_Number; + Sub_Second : out Second_Duration); + -- Split the standard Ada.Calendar.Time data in date data (Year, Month, + -- Day) and Time data (Hour, Minute, Second, Sub_Second) + + function Time_Of + (Year : Ada.Calendar.Year_Number; + Month : Ada.Calendar.Month_Number; + Day : Ada.Calendar.Day_Number; + Hour : Hour_Number; + Minute : Minute_Number; + Second : Second_Number; + Sub_Second : Second_Duration := 0.0) return Ada.Calendar.Time; + -- Returns an Ada.Calendar.Time data built from the date and time values + + -- C timeval conversion + + -- C timeval represent a duration (used in Select for example). This + -- structure is composed of a number of seconds and a number of micro + -- seconds. The timeval structure is not exposed here because its + -- definition is target dependent. Interface to C programs is done via a + -- pointer to timeval structure. + + type timeval is private; + + function To_Duration (T : access timeval) return Duration; + function To_Timeval (D : Duration) return timeval; + +private + -- This is a dummy declaration that should be the largest possible timeval + -- structure of all supported targets. + + type timeval is array (1 .. 2) of Interfaces.C.long; + + function Julian_Day + (Year : Ada.Calendar.Year_Number; + Month : Ada.Calendar.Month_Number; + Day : Ada.Calendar.Day_Number) return Integer; + -- Compute Julian day number + -- + -- The code of this function is a modified version of algorithm 199 from + -- the Collected Algorithms of the ACM. The author of algorithm 199 is + -- Robert G. Tantzen. + +end GNAT.Calendar; |