1 // Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
13 macro_rules! int_module { ($T:ty, $bits:expr) => (
15 // FIXME(#11621): Should be deprecated once CTFE is implemented in favour of
16 // calling the `mem::size_of` function.
17 #[unstable(feature = "num_bits_bytes",
18 reason = "may want to be an associated function",
20 #[rustc_deprecated(since = "1.7.0",
21 reason = "will be replaced via const fn or associated constants")]
22 #[allow(missing_docs)]
23 pub const BITS : usize = $bits;
24 // FIXME(#11621): Should be deprecated once CTFE is implemented in favour of
25 // calling the `mem::size_of` function.
26 #[unstable(feature = "num_bits_bytes",
27 reason = "may want to be an associated function",
29 #[rustc_deprecated(since = "1.7.0",
30 reason = "will be replaced via const fn or associated constants")]
31 #[allow(missing_docs)]
32 pub const BYTES : usize = ($bits / 8);
34 // FIXME(#11621): Should be deprecated once CTFE is implemented in favour of
35 // calling the `Bounded::min_value` function.
36 #[stable(feature = "rust1", since = "1.0.0")]
37 #[allow(missing_docs)]
38 pub const MIN: $T = (-1 as $T) << ($bits - 1);
39 // FIXME(#9837): Compute MIN like this so the high bits that shouldn't exist are 0.
40 // FIXME(#11621): Should be deprecated once CTFE is implemented in favour of
41 // calling the `Bounded::max_value` function.
42 #[stable(feature = "rust1", since = "1.0.0")]
43 #[allow(missing_docs)]
44 pub const MAX: $T = !MIN;