Function core::arch::x86::_mm_blend_epi16

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

This is supported on x86 and target feature sse4.1 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