_mm512_mask_round_ps
Classification
KNC, Convert, CPUID Test: KNCNI
Header File
Instruction
VROUNDPS zmm {k}, m512, imm8
Synopsis
_mm512_mask_round_ps(__m512 src, __mmask16 k, __m512 a, int rounding, _MM_EXP_ADJ_ENUM expadj);
Description
Round the packed single-precision (32-bit) floating-point elements in "a" to the nearest integer value using "expadj" and in the direction of "rounding", and store the results as packed single-precision floating-point elements in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set).
[round_note]
Operation
FOR j := 0 to 15
i := j*32
IF k[j]
dst[i+31:i] := ROUND(a[i+31:i])
CASE expadj OF
_MM_EXPADJ_NONE: dst[i+31:i] := dst[i+31:i] * (2 << 0)
_MM_EXPADJ_4: dst[i+31:i] := dst[i+31:i] * (2 << 4)
_MM_EXPADJ_5: dst[i+31:i] := dst[i+31:i] * (2 << 5)
_MM_EXPADJ_8: dst[i+31:i] := dst[i+31:i] * (2 << 8)
_MM_EXPADJ_16: dst[i+31:i] := dst[i+31:i] * (2 << 16)
_MM_EXPADJ_24: dst[i+31:i] := dst[i+31:i] * (2 << 24)
_MM_EXPADJ_31: dst[i+31:i] := dst[i+31:i] * (2 << 31)
_MM_EXPADJ_32: dst[i+31:i] := dst[i+31:i] * (2 << 32)
ESAC
ELSE
dst[i+31:i] := src[i+31:i]
FI
ENDFOR
dst[MAX:512] := 0