# Function core::arch::x86_64::_mm_rcp14_ss[−][src]

    pub unsafe fn _mm_rcp14_ss(a: __m128, b: __m128) -> __m128

🔬 This is a nightly-only experimental API. (`stdsimd` #48556)
This is supported on x86-64 and target feature `avx512f` only.

Compute the approximate reciprocal 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.

Intel’s documentation