Function _mm256_mask_getexp_ps
#[target_feature(enable = "avx512f", enable = "avx512vl")]
pub fn _mm256_mask_getexp_ps(src: __m256, k: __mmask8, a: __m256) -> __m256Convert the exponent of each packed single-precision (32-bit) floating-point element in a to a single-precision (32-bit) floating-point number representing the integer exponent, and store the results in dst using writemask k (elements are copied from src when the corresponding mask bit is not set). This intrinsic essentially calculates floor(log2(x)) for each element.