FMAXP Floating-point maximum pairwise Compute the maximum value of each pair of adjacent floating-point elements within each source vector, and interleave the results from corresponding lanes. The interleaved result values are destructively placed in the first source vector. When FPCR.AH is 0, the behavior is as follows for each pairwise operation: Negative zero compares less than positive zero. When FPCR.DN is 0, if either element is a NaN, the result is a quiet NaN. When FPCR.DN is 1, if either element is a NaN, the result is Default NaN. When FPCR.AH is 1, the behavior is as follows for each pairwise operation: If both elements are zeros, regardless of the sign of either zero, the result is the second element. If either element is a NaN, regardless of the value of FPCR.DN, the result is the second element. Green True True 0 1 1 0 0 1 0 0 0 1 0 1 1 0 1 0 0 FMAXP <Zdn>.<T>, <Pg>/M, <Zdn>.<T>, <Zm>.<T> if !IsFeatureImplemented(FEAT_SVE2) && !IsFeatureImplemented(FEAT_SME) then UNDEFINED; if size == '00' then UNDEFINED; constant integer esize = 8 << UInt(size); constant integer g = UInt(Pg); constant integer m = UInt(Zm); constant integer dn = UInt(Zdn); <Zdn> Is the name of the first source and destination scalable vector register, encoded in the "Zdn" field. <T> Is the size specifier, size <T> 00 RESERVED 01 H 10 S 11 D <Pg> Is the name of the governing scalable predicate register P0-P7, encoded in the "Pg" field. <Zm> Is the name of the second source scalable vector register, encoded in the "Zm" field. CheckSVEEnabled(); constant integer VL = CurrentVL; constant integer PL = VL DIV 8; constant integer elements = VL DIV esize; constant bits(PL) mask = P[g, PL]; constant bits(VL) operand1 = Z[dn, VL]; constant bits(VL) operand2 = if AnyActiveElement(mask, esize) then Z[m, VL] else Zeros(VL); bits(VL) result = Z[dn, VL]; bits(esize) element1; bits(esize) element2; for e = 0 to elements-1 if ActivePredicateElement(mask, e, esize) then if IsEven(e) then element1 = Elem[operand1, e + 0, esize]; element2 = Elem[operand1, e + 1, esize]; else element1 = Elem[operand2, e - 1, esize]; element2 = Elem[operand2, e + 0, esize]; Elem[result, e, esize] = FPMax(element1, element2, FPCR); Z[dn, VL] = result;