Function _mm_getexp_ph
#[target_feature(enable = "avx512fp16", enable = "avx512vl")]
pub fn _mm_getexp_ph(a: __m128h) -> __m128hConvert the exponent of each packed half-precision (16-bit) floating-point element in a to a half-precision
(16-bit) floating-point number representing the integer exponent, and store the results in dst.
This intrinsic essentially calculates floor(log2(x)) for each element.