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UCLAMP

Unsigned clamp to minimum/maximum vector

Clamp each unsigned element in the destination vector to between the unsigned minimum value in the corresponding element of the first source vector and the unsigned maximum value in the corresponding element of the second source vector and destructively write the results in the corresponding elements of the destination vector. This instruction is unpredicated.

SVE2

(FEAT_SME || FEAT_SVE2p1)

313029282726252423222120191817161514131211109876543210
01000100size0Zm110001ZnZd
U

Encoding

UCLAMP <Zd>.<T>, <Zn>.<T>, <Zm>.<T>

Decode for this encoding

if !IsFeatureImplemented(FEAT_SME) && !IsFeatureImplemented(FEAT_SVE2p1) then EndOfDecode(Decode_UNDEF); constant integer esize = 8 << UInt(size); constant integer n = UInt(Zn); constant integer m = UInt(Zm); constant integer d = UInt(Zd);

Assembler Symbols

<Zd>

Is the name of the destination scalable vector register, encoded in the "Zd" field.

<T>

Is the size specifier, encoded in size:

size <T>
00 B
01 H
10 S
11 D
<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.

Operation

CheckSVEEnabled(); constant integer VL = CurrentVL; constant integer elements = VL DIV esize; constant bits(VL) operand1 = Z[n, VL]; constant bits(VL) operand2 = Z[m, VL]; constant bits(VL) operand3 = Z[d, VL]; bits(VL) result; for e = 0 to elements-1 constant integer element1 = UInt(Elem[operand1, e, esize]); constant integer element2 = UInt(Elem[operand2, e, esize]); constant integer element3 = UInt(Elem[operand3, e, esize]); constant integer res = Min(Max(element1, element3), element2); Elem[result, e, esize] = res<esize-1:0>; Z[d, VL] = result;