BFCVT Single-precision convert to BFloat16 (scalar) This instruction converts the single-precision floating-point value in the 32-bit SIMD&FP source register to BFloat16 format and writes the result in the 16-bit SIMD&FP destination register. ID_AA64ISAR1_EL1.BF16 indicates whether this instruction is supported. 0 0 0 1 1 1 1 0 0 1 1 0 0 0 1 1 0 1 0 0 0 0 BFCVT <Hd>, <Sn> if !IsFeatureImplemented(FEAT_BF16) then EndOfDecode(Decode_UNDEF); end; let d : integer{} = UInt(Rd); let n : integer{} = UInt(Rn); <Hd> Is the 16-bit name of the SIMD&FP destination register, encoded in the "Rd" field. <Sn> Is the 32-bit name of the SIMD&FP source register, encoded in the "Rn" field. AArch64_CheckFPEnabled(); let operand : bits(32) = V{}(n); let merge : boolean = IsMerging(FPCR()); var result : bits(128) = if merge then V{128}(d) else Zeros{128}; result[0+:16] = FPConvertBF(operand, FPCR()); V{128}(d) = result; 2026-03-12 12:23:09 2025-09_rel_asl1