projects / thirdparty / gcc.git / blame
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|---|---|---|
| cacbc350 RK |
1 | ------------------------------------------------------------------------------ |
| 2 | -- -- | |
| 3084fecd | 3 | -- GNAT RUN-TIME LIBRARY COMPONENTS -- |
| cacbc350 | 4 | -- -- |
| fbf5a39b | 5 | -- S Y S T E M . S T R I N G _ C O M P A R E -- |
| cacbc350 RK |
6 | -- -- |
| 7 | -- S p e c -- | |
| 8 | -- -- | |
| 748086b7 | 9 | -- Copyright (C) 2002-2009, Free Software Foundation, Inc. -- |
| cacbc350 RK |
10 | -- -- |
| 11 | -- GNAT is free software; you can redistribute it and/or modify it under -- | |
| 12 | -- terms of the GNU General Public License as published by the Free Soft- -- | |
| 748086b7 | 13 | -- ware Foundation; either version 3, or (at your option) any later ver- -- |
| cacbc350 RK |
14 | -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| 15 | -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |
| 748086b7 JJ |
16 | -- or FITNESS FOR A PARTICULAR PURPOSE. -- |
| 17 | -- -- | |
| 18 | -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
| 19 | -- additional permissions described in the GCC Runtime Library Exception, -- | |
| 20 | -- version 3.1, as published by the Free Software Foundation. -- | |
| 21 | -- -- | |
| 22 | -- You should have received a copy of the GNU General Public License and -- | |
| 23 | -- a copy of the GCC Runtime Library Exception along with this program; -- | |
| 24 | -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |
| 25 | -- <http://www.gnu.org/licenses/>. -- | |
| cacbc350 RK |
26 | -- -- |
| 27 | -- GNAT was originally developed by the GNAT team at New York University. -- | |
| 71ff80dc | 28 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| cacbc350 RK |
29 | -- -- |
| 30 | ------------------------------------------------------------------------------ | |
| 31 | ||
| fbf5a39b | 32 | -- This package contains functions for runtime comparisons on strings |
| cacbc350 | 33 | |
| 2d9ea47f RD |
34 | pragma Warnings (Off); |
| 35 | pragma Compiler_Unit; | |
| 36 | pragma Warnings (On); | |
| 37 | ||
| fbf5a39b | 38 | package System.String_Compare is |
| cacbc350 | 39 | |
| fbf5a39b AC |
40 | function Str_Compare |
| 41 | (Left : System.Address; | |
| 42 | Right : System.Address; | |
| 43 | Left_Len : Natural; | |
| 2d9ea47f | 44 | Right_Len : Natural) return Integer; |
| fbf5a39b AC |
45 | -- Compare the string starting at address Left of length Left_Len |
| 46 | -- with the string starting at address Right of length Right_Len. | |
| 47 | -- The comparison is in the normal Ada semantic sense of string | |
| 48 | -- comparison. The result is -1,0,+1 for Left<Right, Left=Right, | |
| 49 | -- Left>Right respectively. This function works with 4 byte words | |
| 50 | -- if the operands are aligned on 4-byte boundaries and long enough. | |
| cacbc350 | 51 | |
| fbf5a39b AC |
52 | function Str_Compare_Bytes |
| 53 | (Left : System.Address; | |
| 54 | Right : System.Address; | |
| 55 | Left_Len : Natural; | |
| 2d9ea47f | 56 | Right_Len : Natural) return Integer; |
| fbf5a39b AC |
57 | -- Same functionality as Str_Compare but always proceeds by bytes. |
| 58 | -- Used when the caller knows that the operands are unaligned, or | |
| 59 | -- short enough that it makes no sense to go by words. | |
| cacbc350 | 60 | |
| fbf5a39b | 61 | end System.String_Compare; |