Floating-point clamp to minimum/maximum number
This instruction clamps each floating-point element in the destination vector to between the floating-point minimum value in the corresponding element of the first source vector and the floating-point maximum value in the corresponding element of the second source vector and destructively places the clamped results in the corresponding elements of the destination vector.
Regardless of the value of FPCR.AH, the behavior is as follows for each minimum number and maximum number operation:
This instruction is unpredicated.
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | != 00 | 1 | Zm | 0 | 0 | 1 | 0 | 0 | 1 | Zn | Zd | |||||||||||||
| size | |||||||||||||||||||||||||||||||
if !IsFeatureImplemented(FEAT_SME2) && !IsFeatureImplemented(FEAT_SVE2p1) then EndOfDecode(Decode_UNDEF); end; let esize : integer{} = 8 << UInt(size); let n : integer = UInt(Zn); let m : integer = UInt(Zm); let d : integer = UInt(Zd);
| <Zd> |
Is the name of the destination scalable vector register, encoded in the "Zd" field. |
| <T> |
Is the size specifier,
encoded in
|
| <Zn> |
Is the name of the first source scalable vector register, encoded in the "Zn" field. |
| <Zm> |
Is the name of the second source scalable vector register, encoded in the "Zm" field. |
CheckSVEEnabled(); let VL : integer{} = CurrentVL(); let elements : integer = VL DIV esize; var result : bits(VL); let operand1 : bits(VL) = Z{}(n); let operand2 : bits(VL) = Z{}(m); let operand3 : bits(VL) = Z{}(d); for e = 0 to elements-1 do let element1 : bits(esize) = operand1[e*:esize]; let element2 : bits(esize) = operand2[e*:esize]; let element3 : bits(esize) = operand3[e*:esize]; let maxelement : bits(esize) = FPMaxNum{}(element1, element3, FPCR()); result[e*:esize] = FPMinNum{esize}(maxelement, element2, FPCR()); end; Z{VL}(d) = result;
This instruction might be immediately preceded in program order by a MOVPRFX instruction. The MOVPRFX must conform to all of the following requirements, otherwise the behavior of the MOVPRFX and this instruction is CONSTRAINED UNPREDICTABLE:
2026-03_rel 2026-03-26 20:48:11
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