Function core::arch::x86::_mm_rsqrt14_ss[][src]

pub unsafe fn _mm_rsqrt14_ss(a: __m128, b: __m128) -> __m128
🔬 This is a nightly-only experimental API. (stdsimd #48556)
This is supported on x86 and target feature avx512f only.
Expand description

Compute the approximate reciprocal square root of the lower single-precision (32-bit) floating-point element in b, store the result in the lower element of dst, and copy the upper 3 packed elements from a to the upper elements of dst. The maximum relative error for this approximation is less than 2^-14.

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