public mutating func round(_ rule: FloatingPointRoundingRule) { switch rule { case .toNearestOrAwayFromZero: _value = Builtin.int_round_FPIEEE${bits}(_value) case .toNearestOrEven: _value = Builtin.int_rint_FPIEEE${bits}(_value) case .towardZero: _value = Builtin.int_trunc_FPIEEE${bits}(_value) case .awayFromZero: if sign == .minus { _value = Builtin.int_floor_FPIEEE${bits}(_value) } else { _value = Builtin.int_ceil_FPIEEE${bits}(_value) } case .up: _value = Builtin.int_ceil_FPIEEE${bits}(_value) case .down: _value = Builtin.int_floor_FPIEEE${bits}(_value) @unknown default: self._roundSlowPath(rule) } }
