Function no_std_compat::arch::x86_64::_mm_insert_epi64

pub unsafe fn _mm_insert_epi64<const IMM1: i32>(a: __m128i, i: i64) -> __m128i

Available on x86-64 only.

Returns a copy of a with the 64-bit integer from i inserted at a location specified by IMM1.

Intel’s documentation