Function core::arch::x86_64::_tzcnt_u64 [−] [src]

pub unsafe fn _tzcnt_u64(x: u64) -> u64

🔬 This is a nightly-only experimental API. (stdsimd #48556)

This is supported on x86-64 and target feature bmi1 only.

Counts the number of trailing least significant zero bits.

When the source operand is 0, it returns its size in bits.

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