| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- I N T E R F A C E S -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- $Revision: 1.18 $ -- |
| -- -- |
| -- This specification is adapted from the Ada Reference Manual for use with -- |
| -- GNAT. In accordance with the copyright of that document, you can freely -- |
| -- copy and modify this specification, provided that if you redistribute a -- |
| -- modified version, any changes that you have made are clearly indicated. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- Assumes integer sizes of 8, 16, 32 and 64 are available, and that the |
| -- floating-point formats are IEEE compatible. |
| |
| -- There is a specialized version of this package for OpenVMS. |
| |
| 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 assume that we are on an IEEE machine, and |
| -- that the types Short_Float and Long_Float in Standard refer to the |
| -- 32-bit short and 64-bit long IEEE forms. Furthermore, if there is |
| -- an extended float, we assume that it is available as Long_Long_Float. |
| -- 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 new Short_Float; |
| type IEEE_Float_64 is new Long_Float; |
| type IEEE_Extended_Float is new Long_Long_Float; |
| |
| end Interfaces; |