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)