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Diffstat (limited to 'gcc/ada/s-strcom.ads')
| -rw-r--r-- | gcc/ada/s-strcom.ads | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/gcc/ada/s-strcom.ads b/gcc/ada/s-strcom.ads new file mode 100644 index 000000000..6d1a303c5 --- /dev/null +++ b/gcc/ada/s-strcom.ads @@ -0,0 +1,59 @@ +------------------------------------------------------------------------------ +-- -- +-- 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) 2002-2009, 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; + +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; |