BFCVTNT Floating-point down convert and narrow to BFloat16 (top, predicated) Convert to BFloat16 from single-precision in each active floating-point element of the source vector, and place the results in the odd-numbered 16-bit elements of the destination vector, leaving the even-numbered elements unchanged. Inactive elements in the destination vector register remain unmodified. ID_AA64ZFR0_EL1.BF16 indicates whether this instruction is implemented. Green True 0 1 1 0 0 1 0 0 1 0 0 0 1 0 1 0 1 0 1 BFCVTNT <Zd>.H, <Pg>/M, <Zn>.S if ((!IsFeatureImplemented(FEAT_SVE) && !IsFeatureImplemented(FEAT_SME)) || !IsFeatureImplemented(FEAT_BF16)) then UNDEFINED; constant integer g = UInt(Pg); constant integer n = UInt(Zn); constant integer d = UInt(Zd); <Zd> Is the name of the destination scalable vector register, encoded in the "Zd" field. <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. CheckSVEEnabled(); constant integer VL = CurrentVL; constant integer PL = VL DIV 8; constant integer elements = VL DIV 32; constant bits(PL) mask = P[g, PL]; constant bits(VL) operand = if AnyActiveElement(mask, 32) then Z[n, VL] else Zeros(VL); bits(VL) result = Z[d, VL]; for e = 0 to elements-1 if ActivePredicateElement(mask, e, 32) then constant bits(32) element = Elem[operand, e, 32]; Elem[result, 2*e+1, 16] = FPConvertBF(element, FPCR); Z[d, VL] = result;