1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
//! blci
/// Isolate lowest clear bit
pub trait Blci {
/// Sets all bits of `self` to 1 except for the least significant zero bit.
///
/// If there is no zero bit in `self`, it sets all bits.
///
/// # Instructions
///
/// - [`BLCI`](http://support.amd.com/TechDocs/24594.pdf):
/// - Description: Isolate lowest clear bit.
/// - Architecture: x86.
/// - Instruction set: TBM.
/// - Registers: 32/64 bit.
///
/// # Example
///
/// ```
/// # use bitintr::*;
/// assert_eq!(0b0101_0000u8.blci(), 0b1111_1110u8);
/// assert_eq!(0b1111_1111u8.blci(), 0b1111_1111u8);
/// ```
fn blci(self) -> Self;
}
macro_rules! impl_blci {
($id:ident) => {
impl Blci for $id {
#[inline]
fn blci(self) -> Self {
self | !(self.wrapping_add(1))
}
}
};
}
impl_all!(impl_blci: u8, u16, u32, u64, i8, i16, i32, i64);