Function _mm256_insertf128_si256

pub unsafe fn _mm256_insertf128_si256(
    a: __m256i,
    b: __m128i,
    const IMM1: i32,
) -> __m256i

Available on (x86 or x86-64) and target feature avx and x86 only.

Copies a to result, then inserts 128 bits from b into result at the location specified by imm8.

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