# 1.27.0[−][src]Function core::arch::x86_64::_mm256_unpackhi_epi8

    pub unsafe fn _mm256_unpackhi_epi8(a: __m256i, b: __m256i) -> __m256i

This is supported on x86-64 and target feature `avx2` only.

Unpack and interleave 8-bit integers from the high half of each 128-bit lane in `a` and `b`.

    #[cfg(target_arch = "x86")]
    use std::arch::x86::*;
    #[cfg(target_arch = "x86_64")]
    use std::arch::x86_64::*;

    let a = _mm256_setr_epi8(
        0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
        20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
    );
    let b = _mm256_setr_epi8(
        0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, -13, -14, -15,
        -16, -17, -18, -19, -20, -21, -22, -23, -24, -25, -26, -27, -28, -29,
        -30, -31,
    );

    let c = _mm256_unpackhi_epi8(a, b);

    let expected = _mm256_setr_epi8(
        8, -8, 9, -9, 10, -10, 11, -11, 12, -12, 13, -13, 14, -14, 15, -15,
        24, -24, 25, -25, 26, -26, 27, -27, 28, -28, 29, -29, 30, -30, 31,
        -31,
    );
    assert_eq!(_mm256_movemask_epi8(_mm256_cmpeq_epi8(c, expected)), !0);
    Run

Intel's documentation

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g., `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g., `vec -> usize` or `* -> vec`)

Search multiple things at once by splitting your query with comma (e.g., `str,u8` or `String,struct:Vec,test`)