1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- S Y S T E M . C O M M U N I C A T I O N -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 2001-2012, AdaCore -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. -- 17-- -- 18-- As a special exception under Section 7 of GPL version 3, you are granted -- 19-- additional permissions described in the GCC Runtime Library Exception, -- 20-- version 3.1, as published by the Free Software Foundation. -- 21-- -- 22-- You should have received a copy of the GNU General Public License and -- 23-- a copy of the GCC Runtime Library Exception along with this program; -- 24-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25-- <http://www.gnu.org/licenses/>. -- 26-- -- 27-- GNAT was originally developed by the GNAT team at New York University. -- 28-- Extensive contributions were provided by Ada Core Technologies Inc. -- 29-- -- 30------------------------------------------------------------------------------ 31 32-- Common support unit for GNAT.Sockets and GNAT.Serial_Communication 33 34with Ada.Streams; 35with System.CRTL; 36 37package System.Communication is 38 pragma Preelaborate; 39 40 function Last_Index 41 (First : Ada.Streams.Stream_Element_Offset; 42 Count : CRTL.size_t) return Ada.Streams.Stream_Element_Offset; 43 -- Compute the Last OUT parameter for the various Read / Receive 44 -- subprograms: returns First + Count - 1. 45 -- 46 -- When First = Stream_Element_Offset'First and Res = 0, Constraint_Error 47 -- is raised. This is consistent with the semantics of stream operations 48 -- as clarified in AI95-227. 49 50end System.Communication; 51