_mm512_mask_logb_ps
Classification
SVML, Elementary Math Functions, CPUID Test: AVX512F
Header File
immintrin.h
Synopsis
 _mm512_mask_logb_ps(__m512 src, __mmask16 k, __m512 a);
Description
Convert the exponent of each packed single-precision (32-bit) floating-point element in "a" to a single-precision floating-point number representing the integer exponent, and store the results in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set). This intrinsic essentially calculates "floor(log2(x))" for each element.
Operation
FOR j := 0 to 15
	i := j*32
	IF k[j]
		dst[i+31:i] := ConvertExpFP32(a[i+31:i])
	ELSE
		dst[i+31:i] := src[i+31:i]
	FI
ENDFOR
dst[MAX:512] := 0