Function core::arch::x86_64::_mm_rsqrt14_sd

source ·
pub unsafe fn _mm_rsqrt14_sd(a: __m128d, b: __m128d) -> __m128d
🔬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

Compute the approximate reciprocal square root of the lower double-precision (64-bit) floating-point element in b, store the result in the lower element of dst, and copy the upper element from a to the upper element of dst. The maximum relative error for this approximation is less than 2^-14.

Intel’s documentation

This documentation is an old archive. Please see https://rust.docs.kernel.org instead.