Function core::arch::x86_64::_xtest

pub unsafe fn _xtest() -> u8

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

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

Queries whether the processor is executing in a transactional region identified by restricted transactional memory (RTM) or hardware lock elision (HLE).

Intel’s documentation.