GForth(1)						      General Commands Manual							 GForth(1)

NAME

       gforth, gforth-fast, gforthmi - a fast and portable Forth system

SYNOPSIS

       gforth [initialization options] [image-specific options] gforth-fast [initialization options] [image-specific options]

       gforthmi filename [initialization options] [image-specific options]

DESCRIPTION

       GForth is a fast and portable implementation of the Forth programming language. For details read the manual.

ENVIRONMENT VARIABLES

       GFORTHPATH contains the search path for source and image files.

       GFORTHD	gives  the  gforth  executable	used  by  gforthmi  for  creating the base images. It should be a double indirect threaded system.
       Default: gforth-ditc.

       GFORTH gives the gforth executable used by gforthmi for computing the relocatable image from the base images. Default: gforth.

       GFORTHHIST gives the location of the history file used by gforth to allow command-line recall. Default: $HOME. (The history file  is  named
       .gforth-history).

EXAMPLES

       gforth

       starts the system and goes into interactive mode.

       gforth file1 file2 -e bye

       loads and interprets the files file1 and file2, then exits.

       gforth-fast

       is  the	same as gforth, except that it does not support accurate backtraces for signals, and is faster by up to a factor of 2.	Use it for
       debugged, performance-critical programs such as benchmarks.

       gforthmi asm.fi -m 1M asm.fs

       creates an image asm.fi that has a default dictionary size of 1MB and has the file asm.fs loaded.

OPTIONS

       --help
       -h     Lists the available options, including some not described here (see also the manual).

       --image-file file
       -i file
	      Loads the Forth image file instead of the default gforth.fi.

       --path path
       -p path
	      Uses path for searching the image file and Forth source code files instead of the default in the environment variable GFORTHPATH	or
	      the path specified at installation time (typically /usr/local/lib/gforth:.. A path is given as a :-separated list.

       --dictionary-size size
       -m size
	      Allocate	size  space  for the Forth dictionary space instead of using the default specified in the image (typically 256K). The size
	      specification consists of an integer and a unit (e.g., 4M).  The unit can be one of b (bytes), e (element size, in this case Cells),
	      k (kilobytes), and M (Megabytes). If no unit is specified, e is used.

       --data-stack-size size
       -d size
	      Allocate size space for the data stack instead of using the default specified in the image (typically 16K).

       --return-stack-size size
       -r size
	      Allocate size space for the return stack instead of using the default specified in the image (typically 16K).

       --fp-stack-size size
       -f size
	      Allocate	size  space for the floating point stack instead of using the default specified in the image (typically 16K). In this case
	      the unit specifier e refers to floating point numbers.

       --locals-stack-size size
       -l size
	      Allocate size space for the locals stack instead of using the default specified in the image (typically 16K).

       --evaluate forth
       -e forth
	      Evaluates the forth code. This option takes only one argument; if you want to evaluate more Forth words, you have to quote  them	or
	      use  several  -es.   To  exit  after processing the command line (instead of entering interactive mode) append -e bye to the command
	      line. This is an image-specific option of the default image.

FILES

       .../gforth.fi  default Forth image
       *.fi	      Forth loadable image
       *.fs	      Forth source (sequential)
       *.fb	      Forth source (block)
       *.fd	      generated with makedoc.fs
       *.i	      C include files
       *.ds	      documentation source
       *TAGS	      etags files

SEE ALSO

       The Gforth manual - available in hypertext (Info, HTML) and printable (TeX, PS, ASCII) forms.

       The ANSI document X3.215-1994 (i.e., the ANS Forth standard).

       More information on Gforth (e.g., pointers to new versions, to the manual on the WWW and to  papers  about  Gforth)  is	available  through
       http://www.complang.tuwien.ac.at/projects/forth.html.

AUTHORS

       Gforth was written by Anton Ertl, Bernd Paysan, Jens Wilke and others.

								  April 14, 1999							 GForth(1)