Function core::arch::x86::_mm_maskz_getexp_sd

pub unsafe fn _mm_maskz_getexp_sd(
    k: __mmask8,
    a: __m128d,
    b: __m128d
) -> __m128d

🔬This is a nightly-only experimental API. (stdsimd #48556)

Available on (x86 or x86-64) and target feature avx512f only.

Convert the exponent of the lower double-precision (64-bit) floating-point element in b to a double-precision (64-bit) floating-point number representing the integer exponent, store the result in the lower element of dst using zeromask k (the element is zeroed out when mask bit 0 is not set), and copy the upper element from a to the upper element of dst. This intrinsic essentially calculates floor(log2(x)) for the lower element.

Intel’s documentation