_mm512_mask_getexp_round_ps
Classification
KNC, Miscellaneous, CPUID Test: KNCNI
Header File
Instruction
VGETEXPPS zmm {k}, zmm {sae}
Synopsis
_mm512_mask_getexp_round_ps(__m512 src, __mmask16 k, __m512 a, int sae);
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 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.
[sae_note]
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