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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME LIBRARY COMPONENTS --
-- --
-- S Y S T E M . S T R I N G _ C O M P A R E --
-- --
-- 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 strings
pragma Compiler_Unit_Warning;
package System.String_Compare is
function Str_Compare
(Left : System.Address;
Right : System.Address;
Left_Len : Natural;
Right_Len : Natural) return Integer;
-- Compare the string starting at address Left of length Left_Len
-- with the string starting at address Right of length Right_Len.
-- The comparison is in the normal Ada semantic sense of string
-- 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 Str_Compare_Bytes
(Left : System.Address;
Right : System.Address;
Left_Len : Natural;
Right_Len : Natural) return Integer;
-- Same functionality as Str_Compare 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.String_Compare;
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