FMAXQV Floating-point maximum reduction of quadword vector segments Floating-point maximum of the same element numbers from each 128-bit source vector segment using a recursive pairwise reduction, placing each result into the corresponding element number of the 128-bit SIMD&FP destination register. Inactive elements in the source vector are treated as -Infinity. When FPCR.AH is 0, the behavior is as follows: Negative zero compares less than positive zero. When FPCR.DN is 0, if either value is a NaN, the result is a quiet NaN. When FPCR.DN is 1, if either value is a NaN, the result is Default NaN. When FPCR.AH is 1, the behavior is as follows: If both values are zeros, regardless of the sign of either zero, the result is the second value. If either value is a NaN, regardless of the value of FPCR.DN, the result is the second value. Green True 0 1 1 0 0 1 0 0 0 1 0 1 1 0 1 0 1 FMAXQV <Vd>.<T>, <Pg>, <Zn>.<Tb> if !IsFeatureImplemented(FEAT_SVE2p1) && !IsFeatureImplemented(FEAT_SME2p1) then UNDEFINED; if size == '00' then UNDEFINED; constant integer esize = 8 << UInt(size); constant integer g = UInt(Pg); constant integer n = UInt(Zn); constant integer d = UInt(Vd); <Vd> Is the name of the destination SIMD&FP register, encoded in the "Vd" field. <T> Is an arrangement specifier, size <T> 00 RESERVED 01 8H 10 4S 11 2D <Pg> Is the name of the governing scalable predicate register P0-P7, encoded in the "Pg" field. <Zn> Is the name of the source scalable vector register, encoded in the "Zn" field. <Tb> Is the size specifier, size <Tb> 00 RESERVED 01 H 10 S 11 D CheckSVEEnabled(); constant integer VL = CurrentVL; constant integer PL = VL DIV 8; constant integer segments = VL DIV 128; constant integer elempersegment = 128 DIV esize; constant integer segbits = segments*esize; constant bits(PL) mask = P[g, PL]; constant bits(VL) operand = if AnyActiveElement(mask, esize) then Z[n, VL] else Zeros(VL); constant bits(esize) identity = FPInfinity('1', esize); bits(128) result = Zeros(128); for e = 0 to elempersegment-1 bits(segbits) stmp; for s = 0 to segments-1 if ActivePredicateElement(mask, s * elempersegment + e, esize) then Elem[stmp, s, esize] = Elem[operand, s * elempersegment + e, esize]; else Elem[stmp, s, esize] = identity; Elem[result, e, esize] = FPReduce(ReduceOp_FMAX, stmp, esize, FPCR); V[d, 128] = result;