_mm512_mask_exp2a23_pd
Classification
AVX-512, Elementary Math Functions, CPUID Test: AVX512ER
Header File
Instruction
VEXP2PD zmm {k}, zmm
Synopsis
_mm512_mask_exp2a23_pd(__m512d src, __mmask8 k, __m512d a);
Description
Compute the approximate exponential value of 2 raised to the power of packed double-precision (64-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^-23.
Operation
FOR j := 0 to 7
i := j*64
IF k[j]
dst[i+63:i] := POW(2.0, a[i+63:i])
ELSE
dst[i+63:i] := src[i+63:i]
FI
ENDFOR
dst[MAX:512] := 0