bswap.rs - source
Description: Source of the Rust file `library/core/src/../../stdarch/crates/core_arch/src/x86_64/bswap.rs`.

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core/stdarch/crates/core_arch/src/x86_64/
bswap.rs

    1//! Byte swap intrinsics.
    2
    3#![allow(clippy::module_name_repetitions)]
    4
    5#[cfg(test)]
    6use stdarch_test::assert_instr;
    7
    8/// Returns an integer with the reversed byte order of x
    9///
    10/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_bswap64)
    11#[inline]
    12#[cfg_attr(test, assert_instr(bswap))]
    13#[stable(feature = "simd_x86", since = "1.27.0")]
    14#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
    15pub const fn _bswap64(x: i64) -> i64 {
    16    x.swap_bytes()
    17}
    18
    19#[cfg(test)]
    20mod tests {
    21    use crate::core_arch::assert_eq_const as assert_eq;
    22    use stdarch_test::simd_test;
    23
    24    use super::*;
    25
    26    #[simd_test]
    27    const fn test_bswap64() {
    28        assert_eq!(_bswap64(0x0EADBEEFFADECA0E), 0x0ECADEFAEFBEAD0E);
    29        assert_eq!(_bswap64(0x0000000000000000), 0x0000000000000000);
    30    }
    31}