Function _mm_cmp_sh_mask
#[target_feature(enable = "avx512fp16")]
pub fn _mm_cmp_sh_mask(a: __m128h, b: __m128h, IMM5: i32) -> __mmask8Compare the lower half-precision (16-bit) floating-point elements in a and b based on the comparison operand specified by imm8, and store the result in mask vector k.