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
//! blsic
/// Isolate lowest set bit and complement
pub trait Blsic {
/// Clears least significant bit and sets all other bits.
///
/// If there is no set bit in `self`, it sets all the bits.
///
/// # Instructions
///
/// - [`BLSIC`](http://support.amd.com/TechDocs/24594.pdf):
/// - Description: Isolate lowest set bit and complement.
/// - Architecture: x86.
/// - Instruction set: TBM.
/// - Registers: 32/64 bit.
///
/// # Example
///
/// ```
/// # use bitintr::*;
/// assert_eq!(0b0101_0100u8.blsic(), 0b1111_1011u8);
/// assert_eq!(0b0000_0000u8.blsic(), 0b1111_1111u8);
/// ```
fn blsic(self) -> Self;
}
macro_rules! impl_blsic {
($id:ident) => {
impl Blsic for $id {
#[inline]
fn blsic(self) -> Self {
!self | (self.wrapping_sub(1))
}
}
};
}
impl_all!(impl_blsic: u8, u16, u32, u64, i8, i16, i32, i64);