33 lines
1.1 KiB
Rust
33 lines
1.1 KiB
Rust
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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! Operations and constants for `i32`
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use num::BitCount;
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use unstable::intrinsics;
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pub use self::generated::*;
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int_module!(i32, 32)
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impl BitCount for i32 {
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/// Counts the number of bits set. Wraps LLVM's `ctpop` intrinsic.
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#[inline(always)]
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fn population_count(&self) -> i32 { unsafe { intrinsics::ctpop32(*self) } }
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/// Counts the number of leading zeros. Wraps LLVM's `ctlz` intrinsic.
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#[inline(always)]
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fn leading_zeros(&self) -> i32 { unsafe { intrinsics::ctlz32(*self) } }
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/// Counts the number of trailing zeros. Wraps LLVM's `cttz` intrinsic.
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#[inline(always)]
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fn trailing_zeros(&self) -> i32 { unsafe { intrinsics::cttz32(*self) } }
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}
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