_mm256_rcp14_pd
Classification
AVX-512, Arithmetic, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VRCP14PD ymm, ymm
Synopsis
 _mm256_rcp14_pd(__m256d a);
Description
Compute the approximate reciprocal of packed double-precision (64-bit) floating-point elements in "a", and store the results in "dst". The maximum relative error for this approximation is less than 2^-14.
Operation
FOR j := 0 to 3
	i := j*64
	dst[i+63:i] := (1.0 / a[i+63:i])
ENDFOR
dst[MAX:256] := 0