_mm512_maskz_getmant_ph
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512_FP16
Header File
Instruction
VGETMANTPH zmm {z}, zmm, imm8
Synopsis
_mm512_maskz_getmant_ph(__mmask32 k, __m512h a, _MM_MANTISSA_NORM_ENUM norm, _MM_MANTISSA_SIGN_ENUM sign);
Description
Normalize the mantissas of packed half-precision (16-bit) floating-point elements in "a", 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 "±(2^k)*|x.significand|", where "k" depends on the interval range defined by "norm" and the sign depends on "sign" and the source sign.
[getmant_note]
Operation
FOR i := 0 TO 31
IF k[i]
dst.fp16[i] := GetNormalizedMantissaFP16(a.fp16[i], norm, sign)
ELSE
dst.fp16[i] := 0
FI
ENDFOR
dst[MAX:512] := 0