FNMLS Floating-point negated fused multiply-subtract vectors (predicated), writing addend [Zda = -Zda + Zn * Zm] Multiply the corresponding active floating-point elements of the first and second source vectors and subtract from elements of the third source (addend) vector without intermediate rounding. Destructively place the negated results in the destination and third source (addend) vector. Inactive elements in the destination vector register remain unmodified. Green True True True 0 1 1 0 0 1 0 1 1 0 1 1 FNMLS <Zda>.<T>, <Pg>/M, <Zn>.<T>, <Zm>.<T> if !HaveSVE() && !HaveSME() then UNDEFINED; if size == '00' then UNDEFINED; constant integer esize = 8 << UInt(size); integer g = UInt(Pg); integer n = UInt(Zn); integer m = UInt(Zm); integer da = UInt(Zda); boolean op1_neg = FALSE; boolean op3_neg = TRUE; <Zda> Is the name of the third source and destination scalable vector register, encoded in the "Zda" 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. <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(); constant integer VL = CurrentVL; constant integer PL = VL DIV 8; constant integer elements = VL DIV esize; bits(PL) mask = P[g, PL]; bits(VL) operand1 = if AnyActiveElement(mask, esize) then Z[n, VL] else Zeros(VL); bits(VL) operand2 = if AnyActiveElement(mask, esize) then Z[m, VL] else Zeros(VL); bits(VL) operand3 = Z[da, VL]; bits(VL) result; for e = 0 to elements-1 if ActivePredicateElement(mask, e, esize) then bits(esize) element1 = Elem[operand1, e, esize]; bits(esize) element2 = Elem[operand2, e, esize]; bits(esize) element3 = Elem[operand3, e, esize]; if op1_neg then element1 = FPNeg(element1); if op3_neg then element3 = FPNeg(element3); Elem[result, e, esize] = FPMulAdd(element3, element1, element2, FPCR[]); else Elem[result, e, esize] = Elem[operand3, e, esize]; Z[da, VL] = result;