core::arch::x86

Function _mm_mask_rsqrt14_pd

source 
pub unsafe fn _mm_mask_rsqrt14_pd(
    src: __m128d,
    k: __mmask8,
    a: __m128d,
) -> __m128d
🔬This is a nightly-only experimental API. (stdarch_x86_avx512 #111137)
Available on (x86 or x86-64) and target feature avx512f,avx512vl and x86 only.
Expand description

Compute the approximate reciprocal square root of packed double-precision (64-bit) floating-point elements in a, and store the results in dst using writemask k (elements are copied from src when the corresponding mask bit is not set). The maximum relative error for this approximation is less than 2^-14.

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