| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- I N T E R F A C E S -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 2002-2003 Free Software Foundation, Inc. -- |
| -- -- |
| -- This specification is derived from the Ada Reference Manual for use with -- |
| -- GNAT. The copyright notice above, and the license provisions that follow -- |
| -- apply solely to the implementation dependent sections of this file. -- |
| -- -- |
| -- 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, 59 Temple Place - Suite 330, Boston, -- |
| -- MA 02111-1307, 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. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This is the OpenVMS version of this package which adds Float_Representation |
| -- pragmas to the IEEE floating point types to ensure they remain IEEE in |
| -- the presence of a configuration pragma Float_Representation (Vax_Float). |
| |
| -- It assumes integer sizes of 8, 16, 32 and 64 are available, and that IEEE |
| -- floating-point formats are available. |
| |
| package Interfaces is |
| pragma Pure (Interfaces); |
| |
| type Integer_8 is range -2 ** 7 .. 2 ** 7 - 1; |
| for Integer_8'Size use 8; |
| |
| type Integer_16 is range -2 ** 15 .. 2 ** 15 - 1; |
| for Integer_16'Size use 16; |
| |
| type Integer_32 is range -2 ** 31 .. 2 ** 31 - 1; |
| for Integer_32'Size use 32; |
| |
| type Integer_64 is range -2 ** 63 .. 2 ** 63 - 1; |
| for Integer_64'Size use 64; |
| |
| type Unsigned_8 is mod 2 ** 8; |
| for Unsigned_8'Size use 8; |
| |
| type Unsigned_16 is mod 2 ** 16; |
| for Unsigned_16'Size use 16; |
| |
| type Unsigned_32 is mod 2 ** 32; |
| for Unsigned_32'Size use 32; |
| |
| type Unsigned_64 is mod 2 ** 64; |
| for Unsigned_64'Size use 64; |
| |
| function Shift_Left |
| (Value : Unsigned_8; |
| Amount : Natural) |
| return Unsigned_8; |
| |
| function Shift_Right |
| (Value : Unsigned_8; |
| Amount : Natural) |
| return Unsigned_8; |
| |
| function Shift_Right_Arithmetic |
| (Value : Unsigned_8; |
| Amount : Natural) |
| return Unsigned_8; |
| |
| function Rotate_Left |
| (Value : Unsigned_8; |
| Amount : Natural) |
| return Unsigned_8; |
| |
| function Rotate_Right |
| (Value : Unsigned_8; |
| Amount : Natural) |
| return Unsigned_8; |
| |
| function Shift_Left |
| (Value : Unsigned_16; |
| Amount : Natural) |
| return Unsigned_16; |
| |
| function Shift_Right |
| (Value : Unsigned_16; |
| Amount : Natural) |
| return Unsigned_16; |
| |
| function Shift_Right_Arithmetic |
| (Value : Unsigned_16; |
| Amount : Natural) |
| return Unsigned_16; |
| |
| function Rotate_Left |
| (Value : Unsigned_16; |
| Amount : Natural) |
| return Unsigned_16; |
| |
| function Rotate_Right |
| (Value : Unsigned_16; |
| Amount : Natural) |
| return Unsigned_16; |
| |
| function Shift_Left |
| (Value : Unsigned_32; |
| Amount : Natural) |
| return Unsigned_32; |
| |
| function Shift_Right |
| (Value : Unsigned_32; |
| Amount : Natural) |
| return Unsigned_32; |
| |
| function Shift_Right_Arithmetic |
| (Value : Unsigned_32; |
| Amount : Natural) |
| return Unsigned_32; |
| |
| function Rotate_Left |
| (Value : Unsigned_32; |
| Amount : Natural) |
| return Unsigned_32; |
| |
| function Rotate_Right |
| (Value : Unsigned_32; |
| Amount : Natural) |
| return Unsigned_32; |
| |
| function Shift_Left |
| (Value : Unsigned_64; |
| Amount : Natural) |
| return Unsigned_64; |
| |
| function Shift_Right |
| (Value : Unsigned_64; |
| Amount : Natural) |
| return Unsigned_64; |
| |
| function Shift_Right_Arithmetic |
| (Value : Unsigned_64; |
| Amount : Natural) |
| return Unsigned_64; |
| |
| function Rotate_Left |
| (Value : Unsigned_64; |
| Amount : Natural) |
| return Unsigned_64; |
| |
| function Rotate_Right |
| (Value : Unsigned_64; |
| Amount : Natural) |
| return Unsigned_64; |
| |
| pragma Import (Intrinsic, Shift_Left); |
| pragma Import (Intrinsic, Shift_Right); |
| pragma Import (Intrinsic, Shift_Right_Arithmetic); |
| pragma Import (Intrinsic, Rotate_Left); |
| pragma Import (Intrinsic, Rotate_Right); |
| |
| -- Floating point types. We use the digits value to define the IEEE |
| -- forms, otherwise a configuration pragma specifying VAX float can |
| -- default the digits to an illegal value for IEEE. |
| -- Note: it is harmless, and explicitly permitted, to include additional |
| -- types in interfaces, so it is not wrong to have IEEE_Extended_Float |
| -- defined even if the extended format is not available. |
| |
| type IEEE_Float_32 is digits 6; |
| pragma Float_Representation (IEEE_Float, IEEE_Float_32); |
| |
| type IEEE_Float_64 is digits 15; |
| pragma Float_Representation (IEEE_Float, IEEE_Float_64); |
| |
| type IEEE_Extended_Float is digits 15; |
| pragma Float_Representation (IEEE_Float, IEEE_Extended_Float); |
| |
| end Interfaces; |
