_mm512_maskz_getexp_round_ph
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512_FP16
Header File
Instruction
VGETEXPPH zmm {z}, zmm {sae}
Synopsis
_mm512_maskz_getexp_round_ph(__mmask32 k, __m512h a, const int sae);
Description
Convert the exponent of each packed half-precision (16-bit) floating-point element in "a" to a half-precision (16-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. [sae_note]
Operation
FOR i := 0 to 31
IF k[i]
dst.fp16[i] := ConvertExpFP16(a.fp16[i])
ELSE
dst.fp16[i] := 0
FI
ENDFOR
dst[MAX:512] := 0