Function _mm_blend_epi16

pub unsafe fn _mm_blend_epi16(
    a: __m128i,
    b: __m128i,
    const IMM8: i32,
) -> __m128i

Available on (x86 or x86-64) and target feature sse4.1 and x86-64 only.

Blend packed 16-bit integers from a and b using the mask IMM8.

The mask bits determine the selection. A clear bit selects the corresponding element of a, and a set bit the corresponding element of b.

Intel’s documentation