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## _mm256_unpackhi_epi64

# Function _mm256_unpackhi_epi64

1.27.0 (const: unstable) · Source

    pub fn _mm256_unpackhi_epi64(a: __m256i, b: __m256i) -> __m256i

Available on x86-64 and target feature `avx2` only.
Expand description

Unpacks and interleave 64-bit integers from the high half of each 128-bit lane of `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_epi64x(0, 1, 2, 3);
    let b = _mm256_setr_epi64x(0, -1, -2, -3);

    let c = _mm256_unpackhi_epi64(a, b);

    let expected = _mm256_setr_epi64x(1, -1, 3, -3);
    assert_eq!(_mm256_movemask_epi8(_mm256_cmpeq_epi8(c, expected)), !0);

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