FRINTN (scalar) Floating-point round to integral, to nearest with ties to even (scalar) This instruction rounds a floating-point value in the SIMD&FP source register to an integral floating-point value of the same size using the Round to Nearest rounding mode, and writes the result to the SIMD&FP destination register. A zero input gives a zero result with the same sign, an infinite input gives an infinite result with the same sign, and a NaN is propagated as for normal arithmetic. A floating-point exception can be generated by this instruction. Depending on the settings in FPCR, the exception results in either a flag being set in FPSR, or a synchronous exception being generated. For more information, see Floating-point exception traps. Depending on the settings in the CPACR_EL1, CPTR_EL2, and CPTR_EL3 registers, and the current Security state and Exception level, an attempt to execute the instruction might be trapped. 0 0 0 1 1 1 1 0 1 0 0 1 0 0 0 1 0 0 0 0 1 1 FRINTN <Hd>, <Hn> 0 0 FRINTN <Sd>, <Sn> 0 1 FRINTN <Dd>, <Dn> if ftype == '10' || (ftype == '11' && !IsFeatureImplemented(FEAT_FP16)) then UNDEFINED; constant integer d = UInt(Rd); constant integer n = UInt(Rn); constant integer esize = 8 << UInt(ftype EOR '10'); constant boolean exact = FALSE; constant FPRounding rounding = FPRounding_TIEEVEN; <Hd> Is the 16-bit name of the SIMD&FP destination register, encoded in the "Rd" field. <Hn> Is the 16-bit name of the SIMD&FP source register, encoded in the "Rn" field. <Sd> Is the 32-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. <Dd> Is the 64-bit name of the SIMD&FP destination register, encoded in the "Rd" field. <Dn> Is the 64-bit name of the SIMD&FP source register, encoded in the "Rn" field. CheckFPEnabled64(); constant bits(esize) operand = V[n, esize]; bits(128) result = if IsMerging(FPCR) then V[d, 128] else Zeros(128); Elem[result, 0, esize] = FPRoundInt(operand, FPCR, rounding, exact); V[d, 128] = result;