blob: c31bf6726ad5e680601476d0aa5dd2f3f10787e2 [file] [log] [blame]
------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- S Y S T E M . R A N D O M _ S E E D --
-- --
-- S p e c --
-- --
-- Copyright (C) 2011-2022, 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 3, 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. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This package provide a seed for pseudo-random number generation using
-- the clock.
-- There are two separate implementations of this package:
-- o one based on Ada.Calendar
-- o one based on Ada.Real_Time
-- This is required because Ada.Calendar cannot be used on Ravenscar, but
-- Ada.Real_Time drags in the whole tasking runtime on regular platforms.
with Interfaces;
package System.Random_Seed is
function Get_Seed return Interfaces.Unsigned_64;
-- Get a seed based on the clock
end System.Random_Seed;