_mm256_mask_rcp14_ps
Classification
AVX-512, Arithmetic, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VRCP14PS ymm {k}, ymm
Synopsis
 _mm256_mask_rcp14_ps(__m256 src, __mmask8 k, __m256 a);
Description
Compute the approximate reciprocal of packed single-precision (32-bit) floating-point elements in "a", and store the results in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set). The maximum relative error for this approximation is less than 2^-14.
Operation
FOR j := 0 to 7
	i := j*32
	IF k[j]
		dst[i+31:i] := (1.0 / a[i+31:i])
	ELSE
		dst[i+31:i] := src[i+31:i]
	FI
ENDFOR
dst[MAX:256] := 0