Function core::arch::x86::_mm256_insertf128_si256

pub unsafe fn _mm256_insertf128_si256(
    a: __m256i, 
    b: __m128i, 
    imm8: i32
) -> __m256i

This is supported on x86 and target feature avx only.

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

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