Module bmi

Available on x86-64 only.

Bit Manipulation Instruction (BMI) Set 1.0.

The reference is Intel 64 and IA-32 Architectures Software Developer’s Manual Volume 2: Instruction Set Reference, A-Z.

Wikipedia provides a quick overview of the instructions available.

Functions

_andn_u64^⚠bmi1

Bitwise logical AND of inverted a with b.

_bextr2_u64^⚠bmi1

Extracts bits of a specified by control into the least significant bits of the result.

_bextr_u64^⚠bmi1

Extracts bits in range [start, start + length) from a into the least significant bits of the result.

_blsi_u64^⚠bmi1

Extracts lowest set isolated bit.

_blsmsk_u64^⚠bmi1

Gets mask up to lowest set bit.

_blsr_u64^⚠bmi1

Resets the lowest set bit of x.

_mm_tzcnt_64^⚠bmi1

Counts the number of trailing least significant zero bits.

_tzcnt_u64^⚠bmi1

Counts the number of trailing least significant zero bits.

x86_bmi_bextr_64 🔒 ^⚠