core/stdarch/crates/core_arch/src/x86/bswap.rs
//! Byte swap intrinsics.
#![allow(clippy::module_name_repetitions)]
#[cfg(test)]
use stdarch_test::assert_instr;
/// Returns an integer with the reversed byte order of x
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_bswap)
#[inline]
#[cfg_attr(test, assert_instr(bswap))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _bswap(x: i32) -> i32 {
x.swap_bytes()
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_bswap() {
unsafe {
assert_eq!(_bswap(0x0EADBE0F), 0x0FBEAD0E);
assert_eq!(_bswap(0x00000000), 0x00000000);
}
}
}