+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
--- --
--- A D A . R E A L _ T I M E --
--- --
--- B o d y --
--- --
--- $Revision: 1.3 $
--- --
--- Copyright (C) 1991-2001, Florida State University --
--- --
--- GNARL 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. GNARL 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 GNARL; 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. --
--- --
--- GNARL was developed by the GNARL team at Florida State University. It is --
--- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
--- State University (http://www.gnat.com). --
--- --
-------------------------------------------------------------------------------
-
-with System.Task_Primitives.Operations;
--- used for Monotonic_Clock
-
-package body Ada.Real_Time is
-
- ---------
- -- "*" --
- ---------
-
- -- Note that Constraint_Error may be propagated
-
- function "*" (Left : Time_Span; Right : Integer) return Time_Span is
- begin
- return Time_Span (Duration (Left) * Right);
- end "*";
-
- function "*" (Left : Integer; Right : Time_Span) return Time_Span is
- begin
- return Time_Span (Left * Duration (Right));
- end "*";
-
- ---------
- -- "+" --
- ---------
-
- -- Note that Constraint_Error may be propagated
-
- function "+" (Left : Time; Right : Time_Span) return Time is
- begin
- return Time (Duration (Left) + Duration (Right));
- end "+";
-
- function "+" (Left : Time_Span; Right : Time) return Time is
- begin
- return Time (Duration (Left) + Duration (Right));
- end "+";
-
- function "+" (Left, Right : Time_Span) return Time_Span is
- begin
- return Time_Span (Duration (Left) + Duration (Right));
- end "+";
-
- ---------
- -- "-" --
- ---------
-
- -- Note that Constraint_Error may be propagated
-
- function "-" (Left : Time; Right : Time_Span) return Time is
- begin
- return Time (Duration (Left) - Duration (Right));
- end "-";
-
- function "-" (Left, Right : Time) return Time_Span is
- begin
- return Time_Span (Duration (Left) - Duration (Right));
- end "-";
-
- function "-" (Left, Right : Time_Span) return Time_Span is
- begin
- return Time_Span (Duration (Left) - Duration (Right));
- end "-";
-
- function "-" (Right : Time_Span) return Time_Span is
- begin
- return Time_Span_Zero - Right;
- end "-";
-
- ---------
- -- "/" --
- ---------
-
- -- Note that Constraint_Error may be propagated
-
- function "/" (Left, Right : Time_Span) return Integer is
- begin
- return Integer (Duration (Left) / Duration (Right));
- end "/";
-
- function "/" (Left : Time_Span; Right : Integer) return Time_Span is
- begin
- return Time_Span (Duration (Left) / Right);
- end "/";
-
- -----------
- -- Clock --
- -----------
-
- function Clock return Time is
- begin
- return Time (System.Task_Primitives.Operations.Monotonic_Clock);
- end Clock;
-
- ------------------
- -- Microseconds --
- ------------------
-
- function Microseconds (US : Integer) return Time_Span is
- begin
- return Time_Span_Unit * US * 1_000;
- end Microseconds;
-
- ------------------
- -- Milliseconds --
- ------------------
-
- function Milliseconds (MS : Integer) return Time_Span is
- begin
- return Time_Span_Unit * MS * 1_000_000;
- end Milliseconds;
-
- -----------------
- -- Nanoseconds --
- -----------------
-
- function Nanoseconds (NS : Integer) return Time_Span is
- begin
- return Time_Span_Unit * NS;
- end Nanoseconds;
-
- -----------
- -- Split --
- -----------
-
- procedure Split (T : Time; SC : out Seconds_Count; TS : out Time_Span) is
- T_Val : Time;
-
- begin
- -- Special-case for Time_First, whose absolute value is anomalous,
- -- courtesy of two's complement.
-
- if T = Time_First then
- T_Val := abs (Time_Last);
- else
- T_Val := abs (T);
- end if;
-
- -- Extract the integer part of T, truncating towards zero.
-
- if T_Val < 0.5 then
- SC := 0;
- else
- SC := Seconds_Count (Time_Span' (T_Val - 0.5));
- end if;
-
- if T < 0.0 then
- SC := -SC;
- end if;
-
- -- If original time is negative, need to truncate towards negative
- -- infinity, to make TS non-negative, as per ARM.
-
- if Time (SC) > T then
- SC := SC - 1;
- end if;
-
- TS := T - Time (SC);
- end Split;
-
- -------------
- -- Time_Of --
- -------------
-
- function Time_Of (SC : Seconds_Count; TS : Time_Span) return Time is
- begin
- return Time (SC) + TS;
- end Time_Of;
-
- -----------------
- -- To_Duration --
- -----------------
-
- function To_Duration (TS : Time_Span) return Duration is
- begin
- return Duration (TS);
- end To_Duration;
-
- ------------------
- -- To_Time_Span --
- ------------------
-
- function To_Time_Span (D : Duration) return Time_Span is
- begin
- return Time_Span (D);
- end To_Time_Span;
-
-end Ada.Real_Time;
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