Function _mm512_mask_getexp_round_pd

pub unsafe fn _mm512_mask_getexp_round_pd<const SAE: i32>(
    src: __m512d,
    k: u8,
    a: __m512d,
) -> __m512d

🔬This is a nightly-only experimental API. (stdarch_x86_avx512)

Available on x86-64 only.

Convert the exponent of each packed double-precision (64-bit) floating-point element in a to a double-precision (64-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.
Exceptions can be suppressed by passing _MM_FROUND_NO_EXC in the sae parameter.

Intel’s documentation