Function _mm_mask_getexp_round_ss
#[target_feature(enable = "avx512f")]
pub fn _mm_mask_getexp_round_ss(src: __m128, k: __mmask8, a: __m128, b: __m128, SAE: i32) -> __m128Convert the exponent of the lower single-precision (32-bit) floating-point element in b to a single-precision (32-bit) floating-point number representing the integer exponent, store the result in the lower element of dst using writemask k (the element is copied from src when mask bit 0 is not set), and copy the upper 3 packed elements from a to the upper elements of dst. This intrinsic essentially calculates floor(log2(x)) for the lower element.
Exceptions can be suppressed by passing _MM_FROUND_NO_EXC in the sae parameter.