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Diffstat (limited to 'gcc-4.2.1/gcc/ada/s-casi16.adb')
| -rw-r--r-- | gcc-4.2.1/gcc/ada/s-casi16.adb | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/gcc-4.2.1/gcc/ada/s-casi16.adb b/gcc-4.2.1/gcc/ada/s-casi16.adb deleted file mode 100644 index 645137e3a..000000000 --- a/gcc-4.2.1/gcc/ada/s-casi16.adb +++ /dev/null @@ -1,138 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT RUN-TIME LIBRARY COMPONENTS -- --- -- --- S Y S T E M . C O M P A R E _ A R R A Y _ S I G N E D _ 16 -- --- -- --- B o d y -- --- -- --- 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, 51 Franklin Street, Fifth Floor, -- --- Boston, MA 02110-1301, 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. -- --- -- ------------------------------------------------------------------------------- - -with System.Address_Operations; use System.Address_Operations; - -with Unchecked_Conversion; - -package body System.Compare_Array_Signed_16 is - - type Word is mod 2 ** 32; - -- Used to process operands by words - - type Half is range -(2 ** 15) .. (2 ** 15) - 1; - for Half'Size use 16; - -- Used to process operands by half words - - type Uhalf is record - H : Half; - end record; - pragma Pack (Uhalf); - for Uhalf'Alignment use 1; - -- Used to process operands when unaligned - - type WP is access Word; - type HP is access Half; - type UP is access Uhalf; - - function W is new Unchecked_Conversion (Address, WP); - function H is new Unchecked_Conversion (Address, HP); - function U is new Unchecked_Conversion (Address, UP); - - ----------------------- - -- Compare_Array_S16 -- - ----------------------- - - function Compare_Array_S16 - (Left : System.Address; - Right : System.Address; - Left_Len : Natural; - Right_Len : Natural) return Integer - is - Clen : Natural := Natural'Min (Left_Len, Right_Len); - -- Number of elements left to compare - - L : Address := Left; - R : Address := Right; - -- Pointers to next elements to compare - - begin - -- Go by words if possible - - if ModA (OrA (Left, Right), 4) = 0 then - while Clen > 1 - and then W (L).all = W (R).all - loop - Clen := Clen - 2; - L := AddA (L, 4); - R := AddA (R, 4); - end loop; - end if; - - -- Case of going by aligned half words - - if ModA (OrA (Left, Right), 2) = 0 then - while Clen /= 0 loop - if H (L).all /= H (R).all then - if H (L).all > H (R).all then - return +1; - else - return -1; - end if; - end if; - - Clen := Clen - 1; - L := AddA (L, 2); - R := AddA (R, 2); - end loop; - - -- Case of going by unaligned half words - - else - while Clen /= 0 loop - if U (L).H /= U (R).H then - if U (L).H > U (R).H then - return +1; - else - return -1; - end if; - end if; - - Clen := Clen - 1; - L := AddA (L, 2); - R := AddA (R, 2); - end loop; - end if; - - -- Here if common section equal, result decided by lengths - - if Left_Len = Right_Len then - return 0; - elsif Left_Len > Right_Len then - return +1; - else - return -1; - end if; - end Compare_Array_S16; - -end System.Compare_Array_Signed_16; |