# Function _mm256_inserti64x2

Source

    pub fn _mm256_inserti64x2(a: __m256i, b: __m128i, const IMM8: i32) -> __m256i

🔬This is a nightly-only experimental API. (`stdarch_x86_avx512` #111137)
Available on (x86 or x86-64) and target feature `avx512dq,avx512vl` and x86 only.
Expand description

Copy a to dst, then insert 128 bits (composed of 2 packed 64-bit integers) from b into dst at the location specified by IMM8.

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