_mm_maskz_getexp_ps
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VGETEXPPS xmm {z}, xmm
Synopsis
 _mm_maskz_getexp_ps(__mmask8 k, __m128 a);
Description
Convert the exponent of each packed single-precision (32-bit) floating-point element in "a" to a single-precision (32-bit) floating-point number representing the integer exponent, and store the results in "dst" using zeromask "k" (elements are zeroed out when the corresponding mask bit is not set). This intrinsic essentially calculates "floor(log2(x))" for each element.
Operation
FOR j := 0 to 3
	i := j*32
	IF k[j]
		dst[i+31:i] := ConvertExpFP32(a[i+31:i])
	ELSE
		dst[i+31:i] := 0
	FI
ENDFOR
dst[MAX:128] := 0