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//! tzmsk
/// Mask from trailing zeros
pub trait Tzmsk {
/// Sets all bits below the least significant one of `self` and clears all other
/// bits.
///
/// If the least significant bit of `self` is 1, it returns zero.
///
/// # Instructions
///
/// - [`TZMSK`](http://support.amd.com/TechDocs/24594.pdf):
/// - Description: Mask from trailing zeros.
/// - Architecture: x86.
/// - Instruction set: TBM.
/// - Registers: 32/64 bit.
///
/// # Example
///
/// ```
/// # use bitintr::*;
/// assert_eq!(0b0101_1000u8.tzmsk(), 0b0000_0111u8);
/// assert_eq!(0b0101_1001u8.tzmsk(), 0b0000_0000u8);
/// ```
fn tzmsk(self) -> Self;
}
macro_rules! impl_tzmsk {
($id:ident) => {
impl Tzmsk for $id {
#[inline]
fn tzmsk(self) -> Self {
!self & (self.wrapping_sub(1))
}
}
};
}
impl_all!(impl_tzmsk: u8, u16, u32, u64, i8, i16, i32, i64);