Reference for unit 'System': Procedures and functions

`abs`		Calculate absolute value
`AbstractError`		Generate an abstract error.
`AcquireExceptionObject`		Obtain a reference to the current exception object
`AddExitProc`		Add an exit procedure to the exit procedure chain.
`Addr`		Return address of a variable
`Align`		Return aligned version of an address
`AllocMem`		Allocate and clear memory.
`AnsiToUtf8`		Convert ansi string to UTF-8 string
`Append`		Open a file in append mode
`arctan`		Calculate inverse tangent
`ArrayStringToPPchar`		Concert an array of string to an array of null-terminated strings
`Assert`		Check validity of a given condition.
`Assign`		Assign a name to a file
`Assigned`		Check if a pointer is valid
`BasicEventCreate`		Obsolete. Don't use
`basiceventdestroy`		Obsolete. Don't use
`basiceventResetEvent`		Obsolete. Don't use
`basiceventSetEvent`		Obsolete. Don't use
`basiceventWaitFor`		Obsolete. Don't use
`BeginThread`		Start a new thread.
`BEtoN`		Convert Big Endian-ordered integer to Native-ordered integer
`binStr`		Convert integer to string with binary representation.
`BlockRead`		Read data from an untyped file into memory
`BlockWrite`		Write data from memory to an untyped file
`Break`		Exit current loop construct.
`chdir`		Change current working directory.
`chr`		Convert byte value to character value
`Close`		Close a file
`CompareByte`		Compare 2 memory buffers byte per byte
`CompareChar`		ompare 2 memory buffers character per character
`CompareChar0`		Compare two buffers character by character till a null-character is reached.
`CompareDWord`		Compare 2 memory buffers DWord per DWord
`CompareWord`		Compare 2 memory buffers word per word
`Concat`		Append one string to another.
`Continue`		Continue with next loop cycle.
`cos`		Calculate cosine of angle
`Cseg`		Return code segment
`Dec`		Decrease value of variable
`DefaultAnsi2WideMove`		Standard implementation of Ansi to Widestring conversion routine
`DefaultWide2AnsiMove`		Standard implementation of Widestring to Ansi conversion routine
`Delete`		Delete part of a string.
`Dispose`		Free dynamically allocated memory
`DoneCriticalsection`		Clean up a critical section.
`Dseg`		Return data segment
`Dump_Stack`		Dump stack to the given text file.
`DynArraySetLength`		Set the length of a dynamic array
`EndThread`		End the current thread.
`EnterCriticalsection`		Enter a critical section
`EOF`		Check for end of file
`EOLn`		Check for end of line
`Erase`		Delete a file from disk
`Error`		32-bit signed integer.
`Exclude`		Exlude element from a set if it is present.
`Exit`		Exit current subroutine.
`exp`		Exponentiate
`FilePos`		Get position in file
`FileSize`		Size of file
`FillByte`		Fill memory region with 8-bit pattern
`FillChar`		Fill memory region with certain character
`FillDWord`		Fill memory region with 32-bit pattern
`FillWord`		Fill memory region with 16-bit pattern
`FindResource`		Locate a resource and return a handle to it.
`float_raise`		Raise floating point exception
`Flush`		Write file buffers to disk
`FlushThread`		Flush all standard files
`frac`		Return fractional part of floating point value.
`Freemem`		Release allocated memory
`Freememory`		Alias for FreeMem
`FreeResource`		Free a loaded resource
`GetCurrentThreadId`		Return the id of the currently running thread.
`getdir`		Return the current directory
`GetFPCHeapStatus`		Return FPC heap manager status information
`GetHeapStatus`		Return the memory manager heap status.
`GetMem`		Allocate new memory on the heap
`GetMemory`		Alias for GetMem
`GetMemoryManager`		Return current memory manager
`GetProcessID`		Get the current process ID
`GetThreadID`		Get the current Thread ID.
`GetThreadManager`		Return the current thread manager
`GetVariantManager`		Return the current variant manager.
`GetWideStringManager`		Return a copy of the currently active widestring manager.
`get_caller_addr`		Return the address of the caller.
`get_caller_frame`		Return the frame pointer of the caller
`get_frame`		Return the current frame
`halt`		Stop program execution.
`hexStr`		Convert integer value to string with hexadecimal representation.
`hi`		Return high byte/word of value.
`High`		Return highest index of open array or enumerated
`HINSTANCE`		Windows compatibility type for use in resources
`Inc`		Increase value of integer variable
`Include`		Include element in set if it was not yet present.
`IndexByte`		Search for a byte in a memory range.
`IndexChar`		Search for a character in a memory range.
`IndexChar0`		Return index of a character in null-terminated array of char.
`IndexDWord`		Search for a DWord value in a memory range.
`Indexword`		Search for a WORD value in a memory range.
`InitCriticalSection`		Initialize a critical section
`InitThread`		Initialize a thread
`InitThreadVars`		Initialize threadvars
`Insert`		Insert one string in another.
`int`		Calculate integer part of floating point value.
`InterlockedCompareExchange`		Conditional exchange
`InterLockedDecrement`		Thread-safe decrement
`InterLockedExchange`		Exchange 2 integers in a thread-safe way
`InterLockedExchangeAdd`		Thread-safe add and exchange of 2 values
`InterLockedIncrement`		Thread-safe increment
`IOResult`		Return result of last file IO operation
`IsMemoryManagerSet`		Is the memory manager set
`KillThread`		Kill a running thread
`LeaveCriticalsection`		Leave a critical section
`LEtoN`		Convert Little Endian-ordered integer to Native-ordered integer
`ln`		Calculate logarithm
`lo`		Return low byte/word of value.
`LoadResource`		Load a resource for use
`LockResource`		Lock a resource
`longjmp`		Jump to address.
`Low`		Return lowest index of open array or enumerated
`lowerCase`		Return lowercase version of a string.
`MemSize`		Return the size of a memory block.
`mkdir`		Create a new directory.
`Move`		Move data from one location in memory to another
`MoveChar0`		Move data till first zero character
`New`		Dynamically allocate memory for variable
`NtoBE`		Convert Native-ordered integer to a Big Endian-ordered integer
`NtoLE`		Convert Native-ordered integer to a Little Endian-ordered integer
`Null`		Null variant
`OctStr`		Convert integer to a string with octal representation.
`odd`		Is a value odd or even ?
`Ofs`		Return offset of a variable.
`operator *(variant, variant): variant`
`operator **(variant, variant): variant`
`operator +(variant, variant): variant`
`operator -(variant): variant`
`operator -(variant, variant): variant`
`operator /(variant, variant): variant`
`operator :=(ansistring): olevariant`
`operator :=(ansistring): variant`
`operator :=(Boolean): olevariant`
`operator :=(Boolean): variant`
`operator :=(Byte): olevariant`
`operator :=(Byte): variant`
`operator :=(Char): olevariant`
`operator :=(Char): variant`
`operator :=(currency): olevariant`
`operator :=(currency): variant`
`operator :=(double): olevariant`
`operator :=(double): variant`
`operator :=(DWord): olevariant`
`operator :=(DWord): variant`
`operator :=(Int64): olevariant`
`operator :=(Int64): variant`
`operator :=(longbool): olevariant`
`operator :=(longbool): variant`
`operator :=(LongInt): olevariant`
`operator :=(LongInt): variant`
`operator :=(olevariant): ansistring`
`operator :=(olevariant): Boolean`
`operator :=(olevariant): Byte`
`operator :=(olevariant): Char`
`operator :=(olevariant): currency`
`operator :=(olevariant): double`
`operator :=(olevariant): DWord`
`operator :=(olevariant): Int64`
`operator :=(olevariant): longbool`
`operator :=(olevariant): LongInt`
`operator :=(olevariant): qword`
`operator :=(olevariant): Real`
`operator :=(olevariant): ShortInt`
`operator :=(olevariant): shortstring`
`operator :=(olevariant): SmallInt`
`operator :=(olevariant): TDateTime`
`operator :=(olevariant): TError`
`operator :=(olevariant): variant`
`operator :=(olevariant): widechar`
`operator :=(olevariant): widestring`
`operator :=(olevariant): Word`
`operator :=(olevariant): wordbool`
`operator :=(qword): olevariant`
`operator :=(qword): variant`
`operator :=(Real): olevariant`
`operator :=(Real): variant`
`operator :=(real48): double`
`operator :=(ShortInt): olevariant`
`operator :=(ShortInt): variant`
`operator :=(shortstring): olevariant`
`operator :=(shortstring): variant`
`operator :=(SmallInt): olevariant`
`operator :=(SmallInt): variant`
`operator :=(TDateTime): olevariant`
`operator :=(TDateTime): variant`
`operator :=(TError): olevariant`
`operator :=(TError): variant`
`operator :=(variant): ansistring`
`operator :=(variant): Boolean`
`operator :=(variant): Byte`
`operator :=(variant): Char`
`operator :=(variant): currency`
`operator :=(variant): double`
`operator :=(variant): DWord`
`operator :=(variant): Int64`
`operator :=(variant): longbool`
`operator :=(variant): LongInt`
`operator :=(variant): olevariant`
`operator :=(variant): qword`
`operator :=(variant): Real`
`operator :=(variant): ShortInt`
`operator :=(variant): shortstring`
`operator :=(variant): SmallInt`
`operator :=(variant): TDateTime`
`operator :=(variant): TError`
`operator :=(variant): widechar`
`operator :=(variant): widestring`
`operator :=(variant): Word`
`operator :=(variant): wordbool`
`operator :=(widechar): olevariant`
`operator :=(widechar): variant`
`operator :=(widestring): olevariant`
`operator :=(widestring): variant`
`operator :=(Word): olevariant`
`operator :=(Word): variant`
`operator :=(wordbool): olevariant`
`operator :=(wordbool): variant`
`operator <(variant, variant): Boolean`
`operator <=(variant, variant): Boolean`
`operator =(variant, variant): Boolean`
`operator >(variant, variant): Boolean`
`operator >=(variant, variant): Boolean`
`operator and(variant, variant): variant`
`operator div(variant, variant): variant`
`operator mod(variant, variant): variant`
`operator not(variant): variant`
`operator or(variant, variant): variant`
`operator shl(variant, variant): variant`
`operator shr(variant, variant): variant`
`operator xor(variant, variant): variant`
`Ord`		Return ordinal value of an ordinal type.
`Paramcount`		Return number of command-line parameters passed to the program.
`ParamStr`		Return value of a command-line argument.
`pi`		Return the value of PI.
`Pos`		Search for substring in a string.
`Pred`		Return previous element for an ordinal type.
`prefetch`		Prefetch a memory location
`ptr`		Combine segment and offset to pointer
`RaiseList`		List of currently raised exceptions.
`Random`		Generate random number
`Randomize`		Initialize random number generator
`Read`		Read from a text file into variable
`ReadLn`		Read from a text file into variable and goto next line
`Real2Double`		Convert Turbo Pascal style real to double.
`ReAllocMem`		Re-allocate memory on the heap
`ReAllocMemory`		Alias for ReAllocMem
`ReleaseExceptionObject`		Decrease the reference count of the current exception object.
`Rename`		Rename file on disk
`Reset`		Open file for reading
`ResumeThread`		Resume a suspended thread.
`Rewrite`		Open file for writing
`rmdir`		Remove directory when empty.
`round`		Round floating point value to nearest integer number.
`RTLEventCreate`		Create a new RTL event
`RTLeventdestroy`		Destroy a RTL Event
`RTLeventResetEvent`		Reset an event
`RTLeventSetEvent`		Notify threads of the event.
`RTLeventsync`		Obsolete. Don't use
`RTLeventWaitFor`		Wait for an event.
`RunError`		Generate a run-time error.
`Seek`		Set file position
`SeekEOF`		Set file position to end of file
`SeekEOLn`		Set file position to end of line
`Seg`		Return segment
`Setjmp`		Save current execution point.
`SetMemoryManager`		Set a memory manager
`SetMemoryMutexManager`		Procedure to set the mutex manager.
`SetString`		Set length of a string and copy buffer.
`SetTextBuf`		Set size of text file internal buffer
`SetTextLineEnding`		Set the end-of-line character for the given text file.
`SetThreadManager`		Set the thread manager, optionally return the current thread manager.
`SetVariantManager`		Set the current variant manager.
`SetWideStringManager`		Set the widestring manager
`sin`		Calculate sine of angle
`SizeOf`		Return size of a variable or type.
`SizeofResource`		Return the size of a particular resource
`Space`		Return a string of spaces
`Sptr`		Return current stack pointer
`sqr`		Calculate the square of a value.
`sqrt`		Calculate the square root of a value
`Sseg`		Return stack segment register value.
`Str`		Convert a numerical value to a string.
`StringOfChar`		Return a string consisting of 1 character repeated N times.
`StringToPPChar`		Split string in list of null-terminated strings
`StringToWideChar`		Convert a string to an array of widechars.
`strlen`		Length of a null-terminated string.
`strpas`		Convert a null-terminated string to a shortstring.
`Succ`		Return next element of ordinal type.
`SuspendThread`		Suspend a running thread.
`Swap`		Swap high and low bytes/words of a variable
`SwapEndian`		Swap endianness of the argument
`SysAllocMem`		System memory manager: Allocate memory
`SysAssert`		Standard Assert failure implementation
`SysBackTraceStr`		Format an address suitable for inclusion in a backtrace
`SysFreemem`		System memory manager free routine.
`SysFreememSize`		System memory manager free routine.
`SysGetFPCHeapStatus`		Return the status of the FPC heapmanager
`SysGetHeapStatus`		System implementation of GetHeapStatus
`SysGetmem`		System memory manager memory allocator.
`SysInitExceptions`		Initialize exceptions.
`SysInitStdIO`		Initialize standard input and output.
`SysMemSize`		System memory manager: free size.
`SysReAllocMem`		System memory manager: Reallocate memory
`SysResetFPU`		Reset the floating point unit.
`SysTryResizeMem`		System memory manager: attempt to resize memory.
`ThreadGetPriority`		Return the priority of a thread.
`ThreadSetPriority`		Set the priority of a thread.
`ThreadSwitch`		Signal possibility of thread switch
`trunc`		Truncate a floating point value.
`Truncate`		Truncate the file at position
`UCS4StringToWideString`
`Unassigned`		Unassigned variant.
`UnicodeToUtf8`
`UniqueString`		Make sure reference count of string is 1
`UnlockResource`		Unlock a previously locked resource
`upCase`		Convert a string to all uppercase.
`UTF8Decode`
`UTF8Encode`
`Utf8ToAnsi`
`Utf8ToUnicode`
`Val`		Calculate numerical value of a string.
`VarArrayRedim`		Redimension a variant array
`VarCast`
`WaitForThreadTerminate`		Wait for a thread to terminate.
`WideCharLenToString`		Convert a length-limited array of widechar to an ansistring
`WideCharLenToStrVar`		Convert a length-limited array of widechar to an ansistring
`WideCharToString`		Convert a null-terminated array of widechar to an ansistring
`WideCharToStrVar`		Convert a null-terminated array of widechar to an ansistring
`WideStringToUCS4String`		Convert a widestring to a UCS-4 encoded string.
`Write`		Write variable to a text file
`WriteLn`		Write variable to a text file and append newline

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