_mm256_mask_getexp_ph
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512_FP16
Header File
Instruction
VGETEXPPH ymm {k}, ymm
Synopsis
_mm256_mask_getexp_ph(__m256h src, __mmask16 k, __m256h a);
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 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 i := 0 to 15
IF k[i]
dst.fp16[i] := ConvertExpFP16(a.fp16[i])
ELSE
dst.fp16[i] := src.fp16[i]
FI
ENDFOR
dst[MAX:256] := 0