Function core::arch::x86_64::_mm256_unpacklo_epi32

pub unsafe fn _mm256_unpacklo_epi32(a: __m256i, b: __m256i) -> __m256i

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

从每个低位拆包并交织 32 位整数 a 和 b 的 128 位通道

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

let a = _mm256_setr_epi32(0, 1, 2, 3, 4, 5, 6, 7);
let b = _mm256_setr_epi32(0, -1, -2, -3, -4, -5, -6, -7);

let c = _mm256_unpacklo_epi32(a, b);

let expected = _mm256_setr_epi32(0, 0, 1, -1, 4, -4, 5, -5);
assert_eq!(_mm256_movemask_epi8(_mm256_cmpeq_epi8(c, expected)), !0);

Intel’s documentation