core::arch::x86

Function _mm_rsqrt14_pd

source
pub unsafe fn _mm_rsqrt14_pd(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. The maximum relative error for this approximation is less than 2^-14.

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