| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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) 2002-2021, 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 contains functions for runtime comparisons on arrays whose |
| -- elements are 8-bit discrete type values to be treated as unsigned. |
| |
| pragma Compiler_Unit_Warning; |
| |
| 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 Left < Right, Left = Right, Left > Right 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; |
