std_detect 0.1.5

`std::detect` - Rust's standard library run-time CPU feature detection.
Documentation 
//! Bit manipulation utilities.

/// Tests the `bit` of `x`.
#[allow(dead_code)]
#[inline]
pub(crate) fn test(x: usize, bit: u32) -> bool {
    debug_assert!(bit < 32, "bit index out-of-bounds");
    x & (1 << bit) != 0
}