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//! blsr
/// Resets lowest set bit.
pub trait Blsr {
/// Resets the lowest set bit of `self`.
///
/// # Panics
///
/// If `self` is zero the behavior is undefined. Panics if `-C
/// debug-assertions=1`.
///
/// # Instructions
///
/// - [`BLSR`](http://www.felixcloutier.com/x86/BLSR.html):
/// - Description: Reset lowest set bit.
/// - Architecture: x86.
/// - Instruction set: BMI.
/// - Registers: 32/64 bit.
///
/// # Example
///
/// ```
/// # use bitintr::*;
/// assert_eq!(0b0011_0000u8.blsr(), 0b0010_0000u8);
/// ```
fn blsr(self) -> Self;
}
macro_rules! impl_blsr {
($id:ident) => {
impl Blsr for $id {
#[inline]
fn blsr(self) -> Self {
debug_assert!(self != 0);
self & (self.wrapping_sub(1))
}
}
};
}
impl_all!(impl_blsr: u8, u16, u32, u64, i8, i16, i32, i64);