| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- S Y S T E M . C O M M U N I C A T I O N -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 2001-2021, AdaCore -- |
| -- -- |
| -- 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. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- Common support unit for GNAT.Sockets and GNAT.Serial_Communication |
| |
| with Ada.Streams; |
| with System.CRTL; |
| |
| package System.Communication is |
| pragma Preelaborate; |
| |
| function Last_Index |
| (First : Ada.Streams.Stream_Element_Offset; |
| Count : CRTL.size_t) return Ada.Streams.Stream_Element_Offset; |
| -- Compute the Last OUT parameter for the various Read / Receive |
| -- subprograms: returns First + Count - 1. |
| -- |
| -- When First = Stream_Element_Offset'First and Res = 0, Constraint_Error |
| -- is raised. This is consistent with the semantics of stream operations |
| -- as clarified in AI95-227. |
| |
| end System.Communication; |
