VRSQRT28PD - Reciprocal SQuare RooT 28 Packed Double

VRSQRT28PD zmm1{k1}{z}, zmm2/m512/m64bcst{sae}    (V5+ER
__m512d _mm512_rsqrt28_round_pd(__m512d a, int sae)
__m512d _mm512_mask_rsqrt28_round_pd(__m512d s, __mmask8 k, __m512d a, int sae)
__m512d _mm512_maskz_rsqrt28_round_pd(__mmask8 k, __m512d a, int sae)

For each double, calculate approximate reciprocal of square root of (1) and set the result to (2). (relative error < 2-28)

x86/x64 SIMD Instruction List  Feedback