_mm512_maskz_exp2a23_pd
Classification
AVX-512, Elementary Math Functions, CPUID Test: AVX512ER
Header File
immintrin.h
Instruction
VEXP2PD zmm {z}, zmm
Synopsis
 _mm512_maskz_exp2a23_pd(__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 zeromask "k" (elements are zeroed out 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] := 0
	FI
ENDFOR
dst[MAX:512] := 0