33 lines
1.1 KiB
Rust
33 lines
1.1 KiB
Rust
|
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
|
||
|
|
// file at the top-level directory of this distribution and at
|
||
|
|
// http://rust-lang.org/COPYRIGHT.
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
||
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
||
|
|
// option. This file may not be copied, modified, or distributed
|
||
|
|
// except according to those terms.
|
||
|
|
|
||
|
|
//! Operations and constants for `i8`
|
||
|
|
|
||
|
|
use num::BitCount;
|
||
|
|
use unstable::intrinsics;
|
||
|
|
|
||
|
|
pub use self::generated::*;
|
||
|
|
|
||
|
|
int_module!(i8, 8)
|
||
|
|
|
||
|
|
impl BitCount for i8 {
|
||
|
|
/// Counts the number of bits set. Wraps LLVM's `ctpop` intrinsic.
|
||
|
|
#[inline(always)]
|
||
|
|
fn population_count(&self) -> i8 { unsafe { intrinsics::ctpop8(*self) } }
|
||
|
|
|
||
|
|
/// Counts the number of leading zeros. Wraps LLVM's `ctlz` intrinsic.
|
||
|
|
#[inline(always)]
|
||
|
|
fn leading_zeros(&self) -> i8 { unsafe { intrinsics::ctlz8(*self) } }
|
||
|
|
|
||
|
|
/// Counts the number of trailing zeros. Wraps LLVM's `cttz` intrinsic.
|
||
|
|
#[inline(always)]
|
||
|
|
fn trailing_zeros(&self) -> i8 { unsafe { intrinsics::cttz8(*self) } }
|
||
|
|
}
|