vrangess

RangeSP(SRC1[31:0], SRC2[31:0], CmpOpCtl[1:0], SignSelCtl[1:0])
{
// Check if SNAN and report IE, see also Table 5-21
IF (SRC1=SNAN) THEN RETURN (QNAN(SRC1), set IE);
IF (SRC2=SNAN) THEN RETURN (QNAN(SRC2), set IE);

Src1.exp := SRC1[30:23];
Src1.fraction := SRC1[22:0];
IF ((Src1.exp = 0 ) and (Src1.fraction != 0 )) THEN// Src1 is a denormal number
IF DAZ THEN Src1.fraction := 0;
ELSE IF (SRC2 <> QNAN) Set DE; FI;
FI;
Src2.exp := SRC2[30:23];
Src2.fraction := SRC2[22:0];
IF ((Src2.exp = 0 ) and (Src2.fraction != 0 )) THEN// Src2 is a denormal number
IF DAZ THEN Src2.fraction := 0;
ELSE IF (SRC1 <> QNAN) Set DE; FI;
FI;

IF  (SRC2 = QNAN) THEN{TMP[31:0] := SRC1[31:0]}
ELSE IF(SRC1 = QNAN) THEN{TMP[31:0] := SRC2[31:0]}
ELSE IF (Both SRC1, SRC2 are magnitude-0 and opposite-signed) TMP[31:0] := from Table 5-22
ELSE IF (Both SRC1, SRC2 are magnitude-equal and opposite-signed and CmpOpCtl[1:0] > 01) TMP[31:0] := from Table 5-23
ELSE
Case(CmpOpCtl[1:0])
00: TMP[31:0] := (SRC1[31:0] ≤ SRC2[31:0]) ? SRC1[31:0] : SRC2[31:0];
01: TMP[31:0] := (SRC1[31:0] ≤ SRC2[31:0]) ? SRC2[31:0] : SRC1[31:0];
10: TMP[31:0] := (ABS(SRC1[31:0]) ≤ ABS(SRC2[31:0])) ? SRC1[31:0] : SRC2[31:0];
11: TMP[31:0] := (ABS(SRC1[31:0]) ≤ ABS(SRC2[31:0])) ? SRC2[31:0] : SRC1[31:0];
ESAC;
FI;
Case(SignSelCtl[1:0])
00: dest := (SRC1[31] << 31) OR (TMP[30:0]);// Preserve Src1 sign bit
01: dest := TMP[31:0];// Preserve sign of compare result
10: dest := (0 << 31) OR (TMP[30:0]);// Zero out sign bit
11: dest := (1 << 31) OR (TMP[30:0]);// Set the sign bit
ESAC;
RETURN dest[31:0];
}

CmpOpCtl[1:0]= imm8[1:0];
SignSelCtl[1:0]=imm8[3:2];





VRANGESS—Range Restriction Calculation From a Pair of Scalar Float32 Values                                                               Vol. 2C 5-672
VRANGESS
IF k1[0] OR *no writemask*
THEN DEST[31:0] := RangeSP (SRC1[31:0], SRC2[31:0], CmpOpCtl[1:0], SignSelCtl[1:0]);
ELSE
IF *merging-masking*                                 ; merging-masking
THEN *DEST[31:0] remains unchanged*
ELSE                                                         ; zeroing-masking
DEST[31:0] = 0
FI;
FI;
DEST[127:32] := SRC1[127:32]
DEST[MAXVL-1:128] := 0

The following example describes a common usage of this instruction for checking that the input operand is
bounded between ±150.

VRANGESS zmm_dst, zmm_src, zmm_150, 02h;

Where:
xmm_dst is the destination operand.
xmm_src is the input operand to compare against ±150.
xmm_150 is the reference operand, contains the value of 150.
IMM=02(imm8[1:0]=’10) selects the Min Absolute value operation with selection of src1.sign.

In case |xmm_src| < 150, then its value will be written into zmm_dst. Otherwise, the value stored in xmm_dst
will get the value of 150 (received on zmm_150).
However, the sign control (imm8[3:2]=’00) instructs to select the sign of SRC1 received from xmm_src. So, even
in the case of |xmm_src| ≥ 150, the selected sign of SRC1 is kept.
Thus, if xmm_src < -150, the result of VRANGESS will be the minimal value of -150 while if xmm_src > +150,
the result of VRANGE will be the maximal value of +150.

VRANGESS __m128 _mm_range_ss ( __m128 a, __m128 b, int imm);
VRANGESS __m128 _mm_range_round_ss ( __m128 a, __m128 b, int imm, int sae);
VRANGESS __m128 _mm_mask_range_ss (__m128 s, __mmask8 k, __m128 a, __m128 b, int imm);
VRANGESS __m128 _mm_mask_range_round_ss (__m128 s, __mmask8 k, __m128 a, __m128 b, int imm, int sae);
VRANGESS __m128 _mm_maskz_range_ss ( __mmask8 k, __m128 a, __m128 b, int imm);
VRANGESS __m128 _mm_maskz_range_round_ss ( __mmask8 k, __m128 a, __m128 b, int imm, int sae);