1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- I N T E R F A C E S --
9 -- Copyright (C) 2002-2015, Free Software Foundation, Inc. --
11 -- This specification is derived from the Ada Reference Manual for use with --
12 -- GNAT. The copyright notice above, and the license provisions that follow --
13 -- apply solely to the implementation dependent sections of this file. --
15 -- GNAT is free software; you can redistribute it and/or modify it under --
16 -- terms of the GNU General Public License as published by the Free Soft- --
17 -- ware Foundation; either version 3, or (at your option) any later ver- --
18 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
19 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
20 -- or FITNESS FOR A PARTICULAR PURPOSE. --
22 -- As a special exception under Section 7 of GPL version 3, you are granted --
23 -- additional permissions described in the GCC Runtime Library Exception, --
24 -- version 3.1, as published by the Free Software Foundation. --
26 -- You should have received a copy of the GNU General Public License and --
27 -- a copy of the GCC Runtime Library Exception along with this program; --
28 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
29 -- <http://www.gnu.org/licenses/>. --
31 -- GNAT was originally developed by the GNAT team at New York University. --
32 -- Extensive contributions were provided by Ada Core Technologies Inc. --
34 ------------------------------------------------------------------------------
36 pragma Compiler_Unit_Warning
;
41 -- All identifiers in this unit are implementation defined
43 pragma Implementation_Defined
;
45 type Integer_8
is range -2 ** 7 .. 2 ** 7 - 1;
46 for Integer_8
'Size use 8;
48 type Integer_16
is range -2 ** 15 .. 2 ** 15 - 1;
49 for Integer_16
'Size use 16;
51 type Integer_32
is range -2 ** 31 .. 2 ** 31 - 1;
52 for Integer_32
'Size use 32;
54 type Integer_64
is new Long_Long_Integer;
55 for Integer_64
'Size use 64;
56 -- Note: we use Long_Long_Integer'First instead of -2 ** 63 to allow this
57 -- unit to compile when using custom target configuration files where the
58 -- maximum integer is 32 bits. This is useful for static analysis tools
59 -- such as SPARK or CodePeer. In the normal case Long_Long_Integer is
60 -- always 64-bits so we get the desired 64-bit type.
62 type Unsigned_8
is mod 2 ** 8;
63 for Unsigned_8
'Size use 8;
65 type Unsigned_16
is mod 2 ** 16;
66 for Unsigned_16
'Size use 16;
68 type Unsigned_24
is mod 2 ** 24;
69 for Unsigned_24
'Size use 24;
70 -- Declare this type for compatibility with legacy Ada compilers.
71 -- This is particularly useful in the context of CodePeer analysis.
73 type Unsigned_32
is mod 2 ** 32;
74 for Unsigned_32
'Size use 32;
76 type Unsigned_64
is mod 2 ** Long_Long_Integer'Size;
77 for Unsigned_64
'Size use 64;
78 -- See comment on Integer_64 above
82 Amount
: Natural) return Unsigned_8
;
86 Amount
: Natural) return Unsigned_8
;
88 function Shift_Right_Arithmetic
90 Amount
: Natural) return Unsigned_8
;
94 Amount
: Natural) return Unsigned_8
;
98 Amount
: Natural) return Unsigned_8
;
101 (Value
: Unsigned_16
;
102 Amount
: Natural) return Unsigned_16
;
105 (Value
: Unsigned_16
;
106 Amount
: Natural) return Unsigned_16
;
108 function Shift_Right_Arithmetic
109 (Value
: Unsigned_16
;
110 Amount
: Natural) return Unsigned_16
;
113 (Value
: Unsigned_16
;
114 Amount
: Natural) return Unsigned_16
;
116 function Rotate_Right
117 (Value
: Unsigned_16
;
118 Amount
: Natural) return Unsigned_16
;
121 (Value
: Unsigned_32
;
122 Amount
: Natural) return Unsigned_32
;
125 (Value
: Unsigned_32
;
126 Amount
: Natural) return Unsigned_32
;
128 function Shift_Right_Arithmetic
129 (Value
: Unsigned_32
;
130 Amount
: Natural) return Unsigned_32
;
133 (Value
: Unsigned_32
;
134 Amount
: Natural) return Unsigned_32
;
136 function Rotate_Right
137 (Value
: Unsigned_32
;
138 Amount
: Natural) return Unsigned_32
;
141 (Value
: Unsigned_64
;
142 Amount
: Natural) return Unsigned_64
;
145 (Value
: Unsigned_64
;
146 Amount
: Natural) return Unsigned_64
;
148 function Shift_Right_Arithmetic
149 (Value
: Unsigned_64
;
150 Amount
: Natural) return Unsigned_64
;
153 (Value
: Unsigned_64
;
154 Amount
: Natural) return Unsigned_64
;
156 function Rotate_Right
157 (Value
: Unsigned_64
;
158 Amount
: Natural) return Unsigned_64
;
160 pragma Import
(Intrinsic
, Shift_Left
);
161 pragma Import
(Intrinsic
, Shift_Right
);
162 pragma Import
(Intrinsic
, Shift_Right_Arithmetic
);
163 pragma Import
(Intrinsic
, Rotate_Left
);
164 pragma Import
(Intrinsic
, Rotate_Right
);
166 -- IEEE Floating point types
168 type IEEE_Float_32
is digits 6;
169 for IEEE_Float_32
'Size use 32;
171 type IEEE_Float_64
is digits 15;
172 for IEEE_Float_64
'Size use 64;
174 -- If there is an IEEE extended float available on the machine, we assume
175 -- that it is available as Long_Long_Float.
177 -- Note: it is harmless, and explicitly permitted, to include additional
178 -- types in interfaces, so it is not wrong to have IEEE_Extended_Float
179 -- defined even if the extended format is not available.
181 type IEEE_Extended_Float
is new Long_Long_Float;