Here is a list of all functions with links to the classes they belong to:

- u -

• U() : frc::CoordinateAxis, frc::ImplicitModelFollower< States, Inputs >, frc::LinearQuadraticRegulator< States, Inputs >, frc::LinearSystemLoop< States, Inputs, Outputs >, slp::OCP
• uarray() : wpi::java::detail::JSpanBase< T, IsCritical, Size >
• Udp() : wpi::uv::Udp
• UDPClient() : wpi::UDPClient
• UdpSendReq() : wpi::uv::UdpSendReq
• Uff() : frc::ControlAffinePlantInversionFeedforward< States, Inputs >, frc::LinearPlantInversionFeedforward< States, Inputs >
• Uid() : wpi::uv::Process
• UidVectorIterator() : wpi::impl::UidVectorIterator< It >
• uint128_fallback() : detail::uint128_fallback
• UnaryMinusExpression() : slp::detail::UnaryMinusExpression< T >
• unblock() : wpi::sig::Connection, wpi::sig::detail::SlotState, wpi::sig::SignalBase< Lockable, T >
• underlying() : range_formatter< T, Char, enable_if_t< conjunction< std::is_same< T, remove_cvref_t< T > >, is_formattable< T, Char > >::value > >
• unexpect_t() : wpi::unexpect_t
• unexpected() : wpi::unexpected< E >
• unflatten() : basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer, BinaryType, CustomBaseClass >
• unget() : detail::fallback_file< F >, detail::file_base< F >
• unique_function() : wpi::unique_function< R(P...) const >, wpi::unique_function< R(P...)>
• UniqueFunctionBase() : wpi::detail::UniqueFunctionBase< ReturnT, ParamTs >
• UnitEntry() : nt::UnitEntry< T >
• UnitPublisher() : nt::UnitPublisher< T >
• UnitSubscriber() : nt::UnitSubscriber< T >
• UnitTopic() : nt::UnitTopic< T >
• Unless() : frc2::Command, frc2::CommandPtr
• UnlimitedHandleResource() : hal::UnlimitedHandleResource< THandle, TStruct, enumValue >
• unlock() : wpi::recursive_spinlock1, wpi::recursive_spinlock2, wpi::sig::detail::NullMutex, wpi::spinlock
• Unmap() : wpi::MappedFileRegion
• Unpack() : wpi::Protobuf< frc::ArmFeedforward >, wpi::Protobuf< frc::ChassisSpeeds >, wpi::Protobuf< frc::CubicHermiteSpline >, wpi::Protobuf< frc::DCMotor >, wpi::Protobuf< frc::DifferentialDriveFeedforward >, wpi::Protobuf< frc::DifferentialDriveKinematics >, wpi::Protobuf< frc::DifferentialDriveWheelPositions >, wpi::Protobuf< frc::DifferentialDriveWheelSpeeds >, wpi::Protobuf< frc::DifferentialDriveWheelVoltages >, wpi::Protobuf< frc::ElevatorFeedforward >, wpi::Protobuf< frc::Ellipse2d >, wpi::Protobuf< frc::LinearSystem< States, Inputs, Outputs > >, wpi::Protobuf< frc::Matrixd< Rows, Cols, Options, MaxRows, MaxCols > >, wpi::Protobuf< frc::Matrixd< Size, 1, Options, MaxRows, MaxCols > >, wpi::Protobuf< frc::MecanumDriveKinematics >, wpi::Protobuf< frc::MecanumDriveWheelPositions >, wpi::Protobuf< frc::MecanumDriveWheelSpeeds >, wpi::Protobuf< frc::Pose2d >, wpi::Protobuf< frc::Pose3d >, wpi::Protobuf< frc::Quaternion >, wpi::Protobuf< frc::QuinticHermiteSpline >, wpi::Protobuf< frc::Rectangle2d >, wpi::Protobuf< frc::Rotation2d >, wpi::Protobuf< frc::Rotation3d >, wpi::Protobuf< frc::SimpleMotorFeedforward< Distance > >, wpi::Protobuf< frc::SwerveDriveKinematics< NumModules > >, wpi::Protobuf< frc::SwerveModulePosition >, wpi::Protobuf< frc::SwerveModuleState >, wpi::Protobuf< frc::Trajectory >, wpi::Protobuf< frc::Trajectory::State >, wpi::Protobuf< frc::Transform2d >, wpi::Protobuf< frc::Transform3d >, wpi::Protobuf< frc::Translation2d >, wpi::Protobuf< frc::Translation3d >, wpi::Protobuf< frc::Twist2d >, wpi::Protobuf< frc::Twist3d >, wpi::Protobuf< mrc::ControlData >, wpi::Protobuf< mrc::ErrorInfo >, wpi::Protobuf< mrc::Joystick >, wpi::Protobuf< mrc::JoystickDescriptor >, wpi::Protobuf< mrc::JoystickRumbleData >, wpi::Protobuf< mrc::MatchInfo >, wpi::Protobuf< mrc::OpMode >, wpi::Protobuf< mrc::VersionInfo >, wpi::Protobuf< std::vector< mrc::OpMode > >, wpi::ProtobufMessage< T >, wpi::Struct< bool >, wpi::Struct< double >, wpi::Struct< float >, wpi::Struct< frc::ArmFeedforward >, wpi::Struct< frc::ChassisSpeeds >, wpi::Struct< frc::CubicHermiteSpline >, wpi::Struct< frc::DCMotor >, wpi::Struct< frc::DifferentialDriveFeedforward >, wpi::Struct< frc::DifferentialDriveKinematics >, wpi::Struct< frc::DifferentialDriveWheelPositions >, wpi::Struct< frc::DifferentialDriveWheelSpeeds >, wpi::Struct< frc::DifferentialDriveWheelVoltages >, wpi::Struct< frc::ElevatorFeedforward >, wpi::Struct< frc::Ellipse2d >, wpi::Struct< frc::LinearSystem< States, Inputs, Outputs > >, wpi::Struct< frc::Matrixd< Rows, Cols, Options, MaxRows, MaxCols > >, wpi::Struct< frc::Matrixd< Size, 1, Options, MaxRows, MaxCols > >, wpi::Struct< frc::MecanumDriveKinematics >, wpi::Struct< frc::MecanumDriveWheelPositions >, wpi::Struct< frc::MecanumDriveWheelSpeeds >, wpi::Struct< frc::Pose2d >, wpi::Struct< frc::Pose3d >, wpi::Struct< frc::Quaternion >, wpi::Struct< frc::QuinticHermiteSpline >, wpi::Struct< frc::Rectangle2d >, wpi::Struct< frc::Rotation2d >, wpi::Struct< frc::Rotation3d >, wpi::Struct< frc::SimpleMotorFeedforward< Distance > >, wpi::Struct< frc::SwerveDriveKinematics< NumModules > >, wpi::Struct< frc::SwerveModulePosition >, wpi::Struct< frc::SwerveModuleState >, wpi::Struct< frc::Transform2d >, wpi::Struct< frc::Transform3d >, wpi::Struct< frc::Translation2d >, wpi::Struct< frc::Translation3d >, wpi::Struct< frc::Twist2d >, wpi::Struct< frc::Twist3d >, wpi::Struct< int16_t >, wpi::Struct< int32_t >, wpi::Struct< int64_t >, wpi::Struct< int8_t >, wpi::Struct< std::array< T, N >, I... >, wpi::Struct< uint16_t >, wpi::Struct< uint32_t >, wpi::Struct< uint64_t >, wpi::Struct< uint8_t >
• UnpackCallback() : wpi::UnpackCallback< T, N >
• UnpackInto() : wpi::ProtobufMessage< T >, wpi::Struct< std::array< T, N >, I... >
• Unpublish() : nt::BooleanArrayEntry, nt::BooleanEntry, nt::DoubleArrayEntry, nt::DoubleEntry, nt::FloatArrayEntry, nt::FloatEntry, nt::GenericEntry, nt::IntegerArrayEntry, nt::IntegerEntry, nt::NetworkTableEntry, nt::ProtobufEntry< T >, nt::RawEntry, nt::StringArrayEntry, nt::StringEntry, nt::StructArrayEntry< T, I >, nt::StructEntry< T, I >, nt::UnitEntry< T >
• Unreference() : wpi::uv::Handle
• UnregisterAllSubsystems() : frc2::CommandScheduler
• UnregisterSubsystem() : frc2::CommandScheduler
• UnreserveCompressor() : frc::PneumaticHub, frc::PneumaticsBase, frc::PneumaticsControlModule
• UnreserveSolenoids() : frc::PneumaticHub, frc::PneumaticsBase, frc::PneumaticsControlModule
• UnsafeSend() : wpi::uv::Async< T >, wpi::uv::Async<>
• UnscentedKalmanFilter() : frc::UnscentedKalmanFilter< States, Inputs, Outputs, SigmaPoints >
• UnsetLoop() : wpi::detail::WorkerThreadAsync< R >, wpi::WorkerThread< R(T...)>
• unsupported() : detail::chrono_format_checker, detail::null_chrono_spec_handler< Derived >, detail::tm_format_checker
• Until() : frc2::Command, frc2::CommandPtr
• Unwrap() : frc2::CommandPtr
• unwrapValue() : wpi::ValueIsPresent< T, Enable >, wpi::ValueIsPresent< std::optional< T > >, wpi::ValueIsPresent< T, std::enable_if_t< IsNullable< T > > >
• UnwrapVector() : frc2::CommandPtr
• UPB_DESC() : upb_DefBuilder
• UPB_ONLYBITS() : upb_Arena, upb_Array, upb_MiniTable, upb_MiniTableField
• UPB_PRIVATE() : google_protobuf_DescriptorProto, google_protobuf_DescriptorProto_ExtensionRange, google_protobuf_DescriptorProto_ReservedRange, google_protobuf_EnumDescriptorProto, google_protobuf_EnumDescriptorProto_EnumReservedRange, google_protobuf_EnumOptions, google_protobuf_EnumValueDescriptorProto, google_protobuf_EnumValueOptions, google_protobuf_ExtensionRangeOptions, google_protobuf_ExtensionRangeOptions_Declaration, google_protobuf_FeatureSet, google_protobuf_FeatureSet_VisibilityFeature, google_protobuf_FeatureSetDefaults, google_protobuf_FeatureSetDefaults_FeatureSetEditionDefault, google_protobuf_FieldDescriptorProto, google_protobuf_FieldOptions, google_protobuf_FieldOptions_EditionDefault, google_protobuf_FieldOptions_FeatureSupport, google_protobuf_FileDescriptorProto, google_protobuf_FileDescriptorSet, google_protobuf_FileOptions, google_protobuf_GeneratedCodeInfo, google_protobuf_GeneratedCodeInfo_Annotation, google_protobuf_MessageOptions, google_protobuf_MethodDescriptorProto, google_protobuf_MethodOptions, google_protobuf_OneofDescriptorProto, google_protobuf_OneofOptions, google_protobuf_ServiceDescriptorProto, google_protobuf_ServiceOptions, google_protobuf_SourceCodeInfo, google_protobuf_SourceCodeInfo_Location, google_protobuf_UninterpretedOption, google_protobuf_UninterpretedOption_NamePart, upb_Array, upb_Map, upb_MessageValue, upb_MiniTable, upb_MiniTableEnum, upb_MiniTableExtension, upb_MiniTableField, upb_MiniTableFile, upb_MiniTableSub, upb_MiniTableSubInternal
• Update() : frc::DifferentialDriveOdometry3d, frc::DifferentialDriveOdometry, frc::DifferentialDrivePoseEstimator3d, frc::DifferentialDrivePoseEstimator, frc::Odometry3d< WheelSpeeds, WheelPositions >, frc::Odometry< WheelSpeeds, WheelPositions >, frc::PoseEstimator3d< WheelSpeeds, WheelPositions >, frc::PoseEstimator< WheelSpeeds, WheelPositions >, frc::SendableBuilderImpl, frc::sim::DifferentialDrivetrainSim, frc::sim::LinearSystemSim< States, Inputs, Outputs >, wpi::SendableBuilder, wpi::SendableRegistry, wpi::SHA1
• update() : basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer, BinaryType, CustomBaseClass >
• update_values() : slp::detail::AdjointExpressionGraph
• UpdateDutyCycle() : frc::DigitalOutput
• UpdateEntries() : frc::MechanismLigament2d, frc::MechanismObject2d
• updateInt() : wpi::PointerIntPairInfo< PointerT, IntBits, PtrTraits >
• updatePointer() : wpi::PointerIntPairInfo< PointerT, IntBits, PtrTraits >
• UpdateTime() : wpi::uv::Loop
• UpdateValues() : frc::SmartDashboard
• UpdateWithTime() : frc::DifferentialDrivePoseEstimator3d, frc::DifferentialDrivePoseEstimator, frc::PoseEstimator3d< WheelSpeeds, WheelPositions >, frc::PoseEstimator< WheelSpeeds, WheelPositions >
• UpdateX() : frc::sim::ElevatorSim, frc::sim::LinearSystemSim< States, Inputs, Outputs >, frc::sim::SingleJointedArmSim
• UpDownCounter() : frc::UpDownCounter
• upper() : basic_specs
• upper_bound() : wpi::StringMap< T, Allocator >
• UrlParser() : wpi::UrlParser
• usage() : wpi::ArgumentParser
• UsbCamera() : cs::UsbCamera
• utf8_to_utf16() : detail::utf8_to_utf16