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
//! blcfill /// Fill from lowest clear bit pub trait Blcfill { /// Clears all bits below the least significant zero bit of `self`. /// /// If there is no zero bit in `self`, it returns zero. /// /// # Instructions /// /// - [`BLCFILL`](http://support.amd.com/TechDocs/24594.pdf): /// - Description: Fill from lowest clear bit. /// - Architecture: x86. /// - Instruction set: TBM. /// - Registers: 32/64 bit. /// /// # Example /// /// ``` /// # use bitintr::*; /// assert_eq!(0b0101_0111u8.blcfill(), 0b0101_0000u8); /// assert_eq!(0b1111_1111u8.blcfill(), 0u8); /// ``` fn blcfill(self) -> Self; } macro_rules! impl_blcfill { ($id:ident) => { impl Blcfill for $id { #[inline] fn blcfill(self) -> Self { self & (self.wrapping_add(1)) } } }; } impl_all!(impl_blcfill: u8, u16, u32, u64, i8, i16, i32, i64);