The GNU Pascal Manual

• Welcome to GNU Pascal...
• Some of GPC's most interesting features.
• New Features of GNU Pascal.
  • General Changes And Possible Incompatibilies with Previous Versions
  • Command Line Options and Compiler Directives
  • Compiler and RTS Built-in Declarations
  • GPC Units
  • GPC Manual
  • Demo Programs
  • Utilities
  • Test Suite
  • Legend
• The GNU Pascal Frequently Asked Questions List.
  • GNU Pascal
    • What and why?
    • What is the current version?
    • Is it compatible with Turbo Pascal (R)?
    • Which platforms are supported by GNU Pascal?
  • Installing GPC
    • What to read next
    • Which components do I need to compile Pascal code?
    • How do I debug my Pascal programs?
    • What additional libraries should I have?
    • Contributed units
    • Can you recommend an IDE?
  • GNU Pascal on the DJGPP (MS-DOS) platform
    • What is DJGPP?
    • If you need more information
    • What do I download?
    • How do I install the compiler?
    • I cannot read the Info documentation!
    • GPC says: no DPMI
    • I have troubles with assembly code
    • Tell me how to do DPMI, BIOS and other DOS related things.
    • I got an exception when accessing an `array [1 .. 4000000] of Byte'.
  • Strings
    • What's this confusion about strings?
    • Overlaying strings in variant records
    • Why does `s[0]' not contain the length?
    • Support for BP compatible short strings
    • What about C strings?
  • Getting Help
  • Miscellaneous
    • I want to contribute; where do I start?
    • Where is the GNU Pascal FTP site? WWW?
    • About this FAQ
• How to download, compile and install GNU Pascal.
  • Where and what to download
  • Installation instructions for a GPC binary distribution
  • Compiling GPC
  • Compilation notes for specific platforms
    • MS-DOS with DJGPP
    • MS-DOS or OS/2 with EMX
    • MS Windows 95/98/NT
  • Building and Installing a cross-compiler
  • Crossbuilding a compiler.
• A QuickStart Guide from Borland Pascal to GNU Pascal.
  • BP Compatibility
  • BP Incompatibilities
    • String type
    • Qualified identifiers
    • Assembler
    • Move; FillChar
    • Real type
    • Graph unit
    • OOP units
    • Keep; GetIntVec; SetIntVec
    • TFDDs
    • Mem; Port; Ptr; Seg; Ofs; PrefixSeg; etc.
    • Endianness assumptions
    • - -borland-pascal - disable GPC extensions
    • -w - disable all warnings
    • - -uses=System - Swap; HeapError; etc.
    • -D__BP_TYPE_SIZES__ - small integer types etc.
    • - -pack-struct - disable structure alignment
    • -D__BP_RANDOM__ - BP compatible pseudo random number generator
    • -D__BP_UNPORTABLE_ROUTINES__ - Intr; DosVersion; etc.
    • -D__BP_PARAMSTR_0__ - BP compatible ParamStr (0) behaviour
  • IDE versus command line
  • Comments
  • BP Compatible Compiler Directives
  • Units, GPI files and AutoMake
  • Optimization
  • Debugging
  • Objects
  • Strings in BP and GPC
  • Typed Constants
  • Bit, Byte and Memory Manipulation
  • User-defined Operators in GPC
  • Data Types in BP and GPC
  • BP Procedural Types
  • Files
  • Built-in Constants
  • Built-in Operators in BP and GPC
  • Built-in Procedures and Functions
  • Special Parameters
  • Miscellaneous
  • BP and Extended Pascal
  • Portability hints
    • Portability -- why?
  • Low-level features
• Command Line Options supported by GNU Pascal.
  • GPC options besides those of GCC.
  • The most commonly used options to GPC
• The Programmer's Guide to GPC
  • Source Structures
    • The Source Structure of Programs
    • Label Declaration
    • Constant Declaration
    • Type Declaration
    • Variable Declaration
    • Subroutine Declaration
      • The Procedure
      • The Function
      • The Operator
      • Subroutine Parameter List Declaration
    • Statements
      • Assignment
      • begin end Compound Statement
      • if Statement
      • case Statement
      • for Statement
      • while Statement
      • repeat Statement
      • asm Inline
      • with Statement
      • goto Statement
      • Procedure Call
      • The Declaring Statement
      • Loop Control Statements
    • Import Part and Module/Unit Concept
      • The Source Structure of ISO-10206 Extended Pascal Modules
      • The Source Structure of UCSD/Borland Pascal Units
  • Data Types
    • Type Definition
    • Ordinal Types
    • Integer Types
      • The CPU's Natural Integer Types
      • The Main Branch of Integer Types
      • Integer Types with Specified Size
      • Integer Types and Compatibility
      • Summary of Integer Types
    • Built-in Real (Floating Point) Types
    • Strings Types
    • Character Types
    • File Types
    • Boolean (Intrinsic)
    • Pointer (Intrinsic)
    • Type Definition Possibilities
      • Subrange Types
      • Enumerated Types
      • Array Types
      • Record Types
      • Variant Records
      • EP's Schema Types including `String'
      • Set Types
      • Pointer Types
      • Procedural and Functional Types
      • Object Types
      • Initial values to type denoters
      • Restricted Types
    • Machine-dependent Type Implementation
      • Endianness
      • Alignment
  • Operators
    • Built-in Operators
    • User-defined Operators
  • Procedure And Function Parameters
    • Parameters declared as `protected' or `const'
    • The Standard way to pass arrays of variable size
    • BP's alternative to Conformant Arrays
  • Pointer Arithmetics
  • Type Casts
  • Object-Orientated Programming
  • Compiler Directives And The Preprocessor
  • Routines Built-in or in the Run Time System
    • File Routines
    • String Operations
    • Accessing Command Line Arguments
    • Memory Management Routines
    • Operations for Integer and Ordinal Types
    • Complex Number Operations
    • Set Operations
    • Date And Time Routines
  • Interfacing with Other Languages
    • Importing Libraries from Other Languages
    • Exporting GPC Libraries to Other Languages
  • Notes for Debugging
  • Pascal declarations for GPC's Run Time System
  • Units included with GPC
    • BP compatibility: CRT & WinCRT, portable, with many extensions
    • BP compatibility: Dos
    • Overcome some differences between Dos and Unix
    • Higher level file and directory handling
    • Arithmetic with unlimited size and precision
    • Turbo Power compatibility, etc.
    • Primitive heap checking
    • `MD5' Message Digests
    • BP compatibility: Overlay
    • Start a child process, connected with pipes, also on Dos
    • BP compatibility (partly): `Port', `PortW' arrays
    • BP compatibility: Printer, portable
    • Regular Expression matching and substituting
    • BP compatibility: Strings
    • Higher level string handling
    • BP compatibility: System
    • Trap runtime errors
    • BP compatibility: Turbo3
    • BP compatibility: WinDos
• The Alphabetical GPC Language Reference
  • Abs
  • absolute
  • abstract
  • Addr
  • AlignOf
  • all
  • and
  • and then
  • and_then
  • AnsiChar
  • Append
  • ArcTan
  • Arg
  • array
  • asm
  • asmname
  • Assign
  • Assigned
  • attribute
  • begin
  • Bind
  • bindable
  • Binding
  • BindingType
  • BitSizeOf
  • BlockRead
  • BlockWrite
  • Boolean
  • Break
  • Byte
  • ByteBool
  • ByteCard
  • ByteInt
  • C
  • Card
  • Cardinal
  • case
  • Char
  • ChDir
  • Chr
  • C_Language
  • class
  • Close
  • Cmplx
  • Comp
  • Complex
  • Concat
  • Conjugate
  • const
  • constructor
  • Continue
  • Copy
  • Cos
  • CString
  • CString2String
  • CStringCopyString
  • Date
  • Dec
  • DefineSize
  • Delete
  • destructor
  • Dispose
  • div
  • do
  • Double
  • downto
  • else
  • Empty
  • end
  • EOF
  • EOLn
  • EpsReal
  • Eq
  • Erase
  • Exclude
  • Exit
  • Exp
  • export
  • exports
  • Extend
  • Extended
  • extern
  • external
  • Fail
  • False
  • far
  • file
  • FileMode
  • FilePos
  • FileSize
  • FillChar
  • Flush
  • for
  • forward
  • Frac
  • FrameAddress
  • FreeMem
  • function
  • GE
  • Get
  • GetMem
  • GetTimeStamp
  • goto
  • GT
  • Halt
  • High
  • if
  • Im
  • implementation
  • import
  • in
  • Inc
  • Include
  • Index
  • inherited
  • inline
  • InOutRes
  • InOutResStr
  • Input
  • Insert
  • Int
  • Integer
  • interface
  • interrupt
  • IOResult
  • is
  • label
  • LastPosition
  • LE
  • Length
  • library
  • Ln
  • LoCase
  • LongBool
  • LongCard
  • LongestBool
  • LongestCard
  • LongestInt
  • LongestReal
  • LongestWord
  • LongInt
  • LongReal
  • LongWord
  • Low
  • LT
  • Mark
  • Max
  • MaxChar
  • MaxInt
  • MaxReal
  • MedBool
  • MedCard
  • MedInt
  • MedReal
  • MedWord
  • Min
  • MinReal
  • MkDir
  • mod
  • module
  • Move
  • MoveLeft
  • MoveRight
  • Name
  • NE
  • near
  • New
  • NewCString
  • nil
  • not
  • Null
  • object
  • Odd
  • of
  • only
  • operator
  • or
  • or else
  • Ord
  • or_else
  • otherwise
  • Output
  • Override
  • Pack
  • packed
  • Page
  • PAnsiChar
  • ParamCount
  • ParamStr
  • PChar
  • Pi
  • Pointer
  • Polar
  • Pos
  • Position
  • pow
  • Pred
  • private
  • procedure
  • program
  • property
  • protected
  • PtrCard
  • PtrDiffType
  • PtrInt
  • PtrWord
  • public
  • published
  • Put
  • qualified
  • Random
  • Randomize
  • Re
  • Read
  • ReadLn
  • ReadStr
  • Real
  • record
  • register
  • Release
  • Rename
  • repeat
  • Reset
  • resident
  • restricted
  • Result
  • Return
  • ReturnAddress
  • Rewrite
  • RmDir
  • Root
  • Round
  • RunError
  • Seek
  • SeekRead
  • SeekUpdate
  • SeekWrite
  • segment
  • Self
  • set
  • SetFileTime
  • SetLength
  • SetType
  • shl
  • ShortBool
  • ShortCard
  • ShortInt
  • ShortReal
  • ShortWord
  • shr
  • Sin
  • Single
  • SizeOf
  • SizeType
  • SmallInt
  • Sqr
  • SqRt
  • StandardError
  • StandardInput
  • StandardOutput
  • static
  • StdErr
  • Str
  • String
  • String2CString
  • SubStr
  • Succ
  • Text
  • TextWritable
  • then
  • Time
  • TimeStamp
  • to
  • to begin do
  • to end do
  • Trim
  • True
  • Trunc
  • Truncate
  • type
  • type of
  • TypeOf
  • UnBind
  • unit
  • Unpack
  • until
  • UpCase
  • Update
  • uses
  • Val
  • value
  • var
  • view
  • virtual
  • Void
  • volatile
  • while
  • with
  • Word
  • WordBool
  • Write
  • WriteLn
  • WriteStr
  • xor
• Pascal keywords and operators supported by GNU Pascal.
• Where to get support for GNU Pascal; how to report bugs.
  • The GPC Mailing List
  • The GPC Mailing List Archives
  • Newsgroups relevant to GPC
  • Where to get individual support for GPC
  • If the compiler crashes...
  • How to report GPC bugs
  • Running the GPC Test Suite
• The GNU Pascal To-Do List.
  • Known bugs in GPC
    • Things left to do until the next release of GPC
    • Other known bugs in GPC
  • Features planned for GPC
    • Planned features: Strings
    • Planned features: Records/arrays
    • Planned features: Files
    • Planned features: Other types
    • Planned features: Units and modules
    • Planned features: OOP
    • Planned features: Misc
    • Planned features: Utilities
  • Fixed bugs and implemented features
    • Problems that have been solved
    • Features that have been implemented
• The GPC Source Reference
  • GPC's Lexical Analyzer
  • Language Definition: GPC's Parser
  • Tree Nodes
  • Parameter Passing
  • GPI files -- GNU Pascal Interfaces
  • GPC's AutoMake Mechanism -- How it Works
  • Files that make up GPC; Integrating GNU Pascal in GCC
• Contributors to GNU Pascal.
• GNU GENERAL PUBLIC LICENSE
  • Preamble
  • TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
  • How to Apply These Terms to Your New Programs
• The GNU Project.
  • The GNU Manifesto
    • What's GNU? Gnu's Not Unix!
    • Why I Must Write GNU
    • Why GNU Will Be Compatible with Unix
    • How GNU Will Be Available
    • Why Many Other Programmers Want to Help
    • How You Can Contribute
    • Why All Computer Users Will Benefit
    • Some Easily Rebutted Objections to GNU's Goals
  • Funding Free Software
• GPC Index

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