Base ROOT classes

The Base classes of ROOT.

The base classes of the ROOT system provide the core of the system. They are available to all other classes. They range from a set of abstract interfaces (TVirtualXXXXX classes), to a wide range of basic utility classes providing basic services like strings, regular expression, timers, date/time, md5 checksumming, signal/slots event handling, plugin handler, run-config resource processor, etc. etc.

Files
file	RDisplayItem.cxx
file	RDrawable.cxx
file	RDrawable.hxx
file	RFile.cxx
file	RIntegerSequence.hxx
file	RMakeUnique.hxx
file	RMenuItem.cxx
file	RMenuItem.hxx
file	RObjectDrawable.hxx
file	RPadDisplayItem.hxx

Classes
class	TApplication
	This class creates the ROOT Application Environment that interfaces to the windowing system eventloop and eventhandlers. More...
class	TApplicationImp
	ABC describing GUI independent application implementation protocol. More...
class	TAtt3D
	Use this attribute class when an object should have 3D capabilities. More...
class	TAttAxis
	Manages histogram axis attributes. More...
class	TAttBBox
	Helper for management of bounding-box information. More...
class	TAttBBox2D
	Abstract base class for elements drawn in the editor. More...
class	TAttFill
	Fill Area Attributes class. More...
class	TAttLine
	Line Attributes class. More...
class	TAttMarker
	Marker Attributes class. More...
class	TAttPad
	Manages default Pad attributes. More...
class	TAttText
	Text Attributes class. More...
class	TBase64
	This code implements the Base64 encoding and decoding. More...
class	TBenchmark
	This class is a ROOT utility to help benchmarking applications. More...
class	TBrowser
	Using a TBrowser one can browse all ROOT objects. More...
class	TBrowserImp
	ABC describing GUI independent browser implementation protocol. More...
class	TBuffer
	Buffer base class used for serializing objects. More...
class	TBuffer3D
	Generic 3D primitive description class. More...
class	TCanvasImp
	ABC describing GUI independent main window (with menubar, scrollbars and a drawing area). More...
class	TColor
	The color creation and management class. More...
class	TColorGradient
	TColorGradient extends basic TColor. More...
class	TContextMenu
	This class provides an interface to context sensitive popup menus. More...
class	TContextMenuImp
	This class provides an interface to GUI independent context sensitive popup menus. More...
class	TControlBarImp
	ABC describing GUI independent control bar. More...
class	TDatime
	This class stores the date and time with a precision of one second in an unsigned 32 bit word (950130 124559). More...
class	TDirectory
	Describe directory structure in memory. More...
class	TEnv
	The TEnv class reads config files, by default named .rootrc. More...
class	TExec
	TExec is a utility class that can be used to execute a C++ command when some event happens in a pad. More...
class	TFileCollection
	Class that contains a list of TFileInfo's and accumulated meta data information about its entries. More...
class	TFileInfo
	Class describing a generic file including meta information. More...
class	TFolder
	A TFolder object is a collection of objects and folders. More...
class	TGuiFactory
	This ABC is a factory for GUI components. More...
class	TInetAddress
	This class represents an Internet Protocol (IP) address. More...
class	TInspectorImp
	ABC describing GUI independent object inspector (abstraction mainly needed for Win32. More...
class	TListOfTypes
	A collection of TDataType designed to hold the typedef information and numerical type information. More...
class	TMacro
	Class supporting a collection of lines with C++ code. More...
class	TMD5
	This code implements the MD5 message-digest algorithm. More...
class	TMemberInspector
	Abstract base class for accessing the data-members of a class. More...
class	TMessageHandler
	Handle messages that might be generated by the system. More...
class	TNamed
	The TNamed class is the base class for all named ROOT classes. More...
class	TNotifyLink< Type >
	Links multiple listeners to be notified on TChain file changes. More...
class	TObject
	Mother of all ROOT objects. More...
class	TObjectSpy
	Monitors objects for deletion and reflects the deletion by reverting the internal pointer to zero. More...
class	TObjString
	Collectable string class. More...
class	TParameter< AParamType >
	Named parameter, streamable and storable. More...
class	TPluginManager
	This class implements a plugin library manager. More...
class	TProcessID
	A TProcessID identifies a ROOT job in a unique way in time and space. More...
class	TProcessUUID
	This class is a specialized TProcessID managing the list of UUIDs. More...
class	TQCommand
	The Command design pattern is based on the idea, that all editing in an application is done by creating instances of command objects. More...
class	TQConnection
	TQConnection class is an internal class, used in the object communication mechanism. More...
class	TQObject
	This is the ROOT implementation of the Qt object communication mechanism (see also http://www.troll.no/qt/metaobjects.html) More...
class	TRef
	Persistent Reference link to a TObject A TRef is a lightweight object pointing to any TObject. More...
class	TRefCnt
	Definitions for TRefCnt, base class for reference counted objects. More...
class	TRegexp
	Regular expression class. More...
class	TRemoteObject
	The TRemoteObject class provides protocol for browsing ROOT objects from a remote ROOT session. More...
class	TROOT
	ROOT top level object description. More...
class	TStopwatch
	Stopwatch class. More...
class	TStorage
	Storage manager. More...
class	TString
	Basic string class. More...
class	TStyle
	TStyle objects may be created to define special styles. More...
class	TSysEvtHandler
	Abstract base class for handling system events. More...
class	TSystem
	Abstract base class defining a generic interface to the underlying Operating System. More...
class	TSystemDirectory
	Describes an Operating System directory for the browser. More...
class	TSystemFile
	A TSystemFile describes an operating system file. More...
class	TTask
	TTask is a base class that can be used to build a complex tree of Tasks. More...
class	TTime
	Basic time type with millisecond precision. More...
class	TTimer
	Handles synchronous and a-synchronous timer events. More...
class	TTimeStamp
	The TTimeStamp encapsulates seconds and ns since EPOCH. More...
class	TUri
	This class represents a RFC 3986 compatible URI. More...
class	TUrl
	This class represents a WWW compatible URL. More...
class	TUUID
	This class defines a UUID (Universally Unique IDentifier), also known as GUIDs (Globally Unique IDentifier). More...
class	TVirtualFFT
	TVirtualFFT is an interface class for Fast Fourier Transforms. More...
class	TVirtualMutex
	This class implements a mutex interface. More...
class	TVirtualPad
	TVirtualPad is an abstract base class for the Pad and Canvas classes. More...
class	TVirtualPadEditor
	Abstract base class used by ROOT graphics editor. More...
class	TVirtualPadPainter
	To make it possible to use GL for 2D graphic in a TPad/TCanvas. More...
class	TVirtualPerfStats
	Provides the interface for the PROOF internal performance measurement and event tracing. More...
class	TVirtualPS
	TVirtualPS is an abstract interface to Postscript, PDF, SVG. More...
class	TVirtualViewer3D
	Abstract 3D shapes viewer. More...
class	TVirtualX
	Semi-Abstract base class defining a generic interface to the underlying, low level, native graphics backend (X11, Win32, MacOS, OpenGL...). More...

Functions
Long_t	TMath::NextPrime (Long_t x)
	TMath Base functions. More...

Function Documentation

NextPrime()

Long_t TMath::NextPrime

(

Long_t

x

)

TMath Base functions.

Define the functions Min, Max, Abs, Sign, Range for all types. NB: These functions are unfortunately not available in a portable way in std::.

More functions are defined in TMath.h. TMathBase.h is designed to be a stable file and used in place of TMath.h in the ROOT miniCore. Return next prime number after x, unless x is a prime in which case x is returned.

Definition at line 30 of file TMathBase.cxx.