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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);