# Function core::arch::x86_64::_mm_mask_rsqrt14_ps

source · [−]

    pub unsafe fn _mm_mask_rsqrt14_ps(src: __m128, k: __mmask8, a: __m128) -> __m128

🔬This is a nightly-only experimental API. (`stdsimd` #48556)
Available on (x86 or x86-64) and target feature `avx512f,avx512vl` and x86-64 only.
Expand description

Compute the approximate reciprocal square root of packed single-precision (32-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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