Crate bitintr

bitintr offers portable bit manipulation intrinsics (@github, @crates.io).

The intrinsics are named after their CPU instruction and organized in traits of the same name. These traits are implemented for all integer types except u128/i128.

The std::arch intrinsics are used when the required features are enabled in the target. You might manually enable features via -C target-feature=+... and/or -C target-cpu=....

Traits

Andn	Logical and not
Bextr	Bit field extract
Blcfill	Fill from lowest clear bit
Blci	Isolate lowest clear bit
Blcic	Isolate lowest clear bit
Blcmsk	Mask from lowest clear bit.
Blcs	Set lowest clear bit
Blsfill	Fill from lowest set bit
Blsi	Extract lowest set isolated bit.
Blsic	Isolate lowest set bit and complement
Blsmsk	Get mask up to lowest set bit.
Blsr	Resets lowest set bit.
Bzhi	Zero high bits
Cls	Count leading sign bits
Lzcnt	Count leading zeros
Mulx	Unsigned multiply without affecting flags.
Pdep	Parallel bits deposit
Pext	Parallel bits extract
Popcnt	Count bits set.
Rbit	Bit reverse
Rev	Byte reverse
T1mskc	Inverse mask from trailing ones
Tzcnt	Counts trailing zero bits
Tzmsk	Mask from trailing zeros