URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc1/] [gcc/] [ada/] [a-calari.ads] - Rev 617
Go to most recent revision | Compare with Previous | Blame | View Log
------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- A D A . C A L E N D A R . A R I T H M E T I C -- -- -- -- S p e c -- -- -- -- Copyright (C) 2005-2008, Free Software Foundation, Inc. -- -- -- -- This specification is derived from the Ada Reference Manual for use with -- -- GNAT. In accordance with the copyright of that document, you can freely -- -- copy and modify this specification, provided that if you redistribute a -- -- modified version, any changes that you have made are clearly indicated. -- -- -- ------------------------------------------------------------------------------ -- This package provides arithmetic operations of time values using days -- and leap seconds. Ada.Calendar.Arithmetic is defined in the Ada 2005 -- RM (9.6.1). package Ada.Calendar.Arithmetic is -- Arithmetic on days: -- Rough estimate on the number of days over the range of Ada time type Day_Count is range -(366 * (1 + Year_Number'Last - Year_Number'First)) .. +(366 * (1 + Year_Number'Last - Year_Number'First)); subtype Leap_Seconds_Count is Integer range -2047 .. 2047; -- Count of leap seconds. Negative leap seconds occur whenever the -- astronomical time is faster than the atomic time or as a result of -- Difference when Left < Right. procedure Difference (Left : Time; Right : Time; Days : out Day_Count; Seconds : out Duration; Leap_Seconds : out Leap_Seconds_Count); -- Returns the difference between Left and Right. Days is the number of -- days of difference, Seconds is the remainder seconds of difference -- excluding leap seconds, and Leap_Seconds is the number of leap seconds. -- If Left < Right, then Seconds <= 0.0, Days <= 0, and Leap_Seconds <= 0, -- otherwise all values are nonnegative. The absolute value of Seconds is -- always less than 86_400.0. For the returned values, if Days = 0, then -- Seconds + Duration (Leap_Seconds) = Calendar."-" (Left, Right) function "+" (Left : Time; Right : Day_Count) return Time; function "+" (Left : Day_Count; Right : Time) return Time; -- Adds a number of days to a time value. Time_Error is raised if the -- result is not representable as a value of type Time. function "-" (Left : Time; Right : Day_Count) return Time; -- Subtracts a number of days from a time value. Time_Error is raised if -- the result is not representable as a value of type Time. function "-" (Left : Time; Right : Time) return Day_Count; -- Subtracts two time values, and returns the number of days between them. -- This is the same value that Difference would return in Days. end Ada.Calendar.Arithmetic;
Go to most recent revision | Compare with Previous | Blame | View Log