------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME LIBRARY COMPONENTS -- -- -- -- S Y S T E M . C O M P A R E _ A R R A Y _ U N S I G N E D _ 8 -- -- -- -- S p e c -- -- -- -- Copyright (C) 2002-2005 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 2, 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. See the GNU General Public License -- -- for more details. You should have received a copy of the GNU General -- -- Public License distributed with GNAT; 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. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This package contains functions for runtime comparisons on arrays whose -- elements are 8-bit discrete type values to be treated as unsigned. package System.Compare_Array_Unsigned_8 is -- Note: although the functions in this package are in a sense Pure, the -- package cannot be declared as Pure, since the arguments are addresses, -- not the data, and the result is not pure wrt the address values. function Compare_Array_U8 (Left : System.Address; Right : System.Address; Left_Len : Natural; Right_Len : Natural) return Integer; -- Compare the array starting at address Left of length Left_Len -- with the array starting at address Right of length Right_Len. -- The comparison is in the normal Ada semantic sense of array -- comparison. The result is -1,0,+1 for LeftRight respectively. This function works with 4 byte words -- if the operands are aligned on 4-byte boundaries and long enough. function Compare_Array_U8_Unaligned (Left : System.Address; Right : System.Address; Left_Len : Natural; Right_Len : Natural) return Integer; -- Same functionality as Compare_Array_U8 but always proceeds by -- bytes. Used when the caller knows that the operands are unaligned, -- or short enough that it makes no sense to go by words. end System.Compare_Array_Unsigned_8;