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## _mm_maskz_rcp14_sd

# Function _mm_maskz_rcp14_sd

1.89.0 · Source

    pub fn _mm_maskz_rcp14_sd(k: __mmask8, a: __m128d, b: __m128d) -> __m128d

Available on x86-64 and target feature `avx512f` only.
Expand description

Compute the approximate reciprocal of the lower double-precision (64-bit) floating-point element in b, store the result in the lower element of dst using zeromask k (the element is zeroed out when mask bit 0 is not set), 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.

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