Macro std::arch::is_arm_feature_detected

macro_rules! is_arm_feature_detected {
    ("neon") => { ... };
    ("pmull") => { ... };
    ("crc") => { ... };
    ("aes") => { ... };
    ("sha2") => { ... };
    ("i8mm") => { ... };
    ("v7") => { ... };
    ("vfp2") => { ... };
    ("vfp3") => { ... };
    ("vfp4") => { ... };
    ($t:tt,) => { ... };
    ($t:tt) => { ... };
}

🔬This is a nightly-only experimental API. (stdsimd #27731)

Available on ARM only.

Checks if arm feature is enabled.