# Function core::arch::x86_64::_mm_maskz_getexp_ss

source ·

    pub unsafe fn _mm_maskz_getexp_ss(k: __mmask8, a: __m128, b: __m128) -> __m128

🔬This is a nightly-only experimental API. (`stdsimd` #48556)
Available on (x86 or x86-64) and target feature `avx512f` and x86-64 only.
Expand description

Convert 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 zeromask k (the element is zeroed out 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.

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