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Text File | 1994-02-21 | 5.0 KB | 151 lines | [TEXT/RLAB] |
- NAME
- RLaB - matrix oriented, interactive programming environment
-
- SYNOPSIS
- rlab [-Vdlmnpqr] [file(s)] [-]
-
- DESCRIPTION
- rlab is an interpreter for the RLaB Programming
- Language/Environment. The RLaB language is useful for matrix
- or array oriented numerical analyses. RLaB is especially
- useful for prototyping and experimenting with algorithms.
-
- rlab also provides a convenient interface to many of the
- LAPACK, FFTPACK, and RANLIB subroutines.
-
- OPTIONS
- -V Prints the version number to stderr and exits.
-
- -d causes a readable form of the internal stack machine's
- compiled program to be output to stderr. This option
- should be used in conjunction with `-qln' options. This
- option is not intended for general use.
-
- -l prevents loading of the rlab library of rfiles.
-
- -m prevents printing of the greeting message.
-
- -n prevents line number and file name information from
- being used in the internal stack machine codes. This
- option should only be used with the `-dlnq'. This
- option is not intended for general use.
-
- -p prevents rlab from using the specified pager for all
- output.
-
- -q prevents loading of the startup file
-
- -r prevents usage of the GNU readline library for command
- line editing.
-
- file(s)
- are loaded and executed by rlab after the `.rlab' file,
- and after the library files.
-
- - forces rlab to go interactive after all the files on
- the command line have been executed.
-
- ENVIRONMENT
- rlab checks the values of several environment variables upon
-
- Version 0.95 beta 3 October 1993 1
-
- startup, and uses them to overide the compiled in defaults.
- If a particular environment variable has not been set, the
- default value is used.
-
- RLAB_RC0 Startup rfile.
-
- RLAB_HELP_DIR The principle directory of help files.
-
- RLAB_LIB_DIR The directory of rfiles to load on startup.
-
- RLAB_PAGER The pager to use for paging help files to the
- screen. If RLAB_PAGER is not set, then the environment is
- checked for PAGER . If neither exists, then the pager speci-
- fied at compile time is used.
-
- RLAB_SEARCH_PATH The set of directories to search when
- attempting to load rfiles.
-
- EXECUTION
- rlab is normally executed from a shell command line. Upon
- startup rlab
-
- Processes the command line options and files.
-
- Executes the `.rlab' file.
-
- Executes any `.r' files in the library directory.
-
- Executes any files specified on the command line.
-
- Goes into interactive mode if no files are specified on the
- command line, or if the `-' option is used.
-
- rlab can also be invoked by using the `#!' convention
- employed by exec(2). A rlab script that begins with a line
- of the form:
-
- #! pathname [arg]
-
- where pathname is the full pathname to the rlab executable,
- and arg is optional argument(s). Note that if the `-' option
- is not specified rlab will not go interactive after the
- script has been executed.
-
- DOCUMENTATION
- rlab has an on-line help system, which can be accessed by
- typing `help'. A tutorial and a reference manual are
- currently being worked on.
-
- This man-page was not intended to provide a description of
-
- Version 0.95 beta 3 October 1993 2
-
- the language, or rlab's features. Please refer to the manu-
- als, or the on-line help.
-
- BUGS
- Paged output gets hosed after an `out of memory' message.
-
- rlab implements fprintf(), printf() and sprintf() using the
- C library functions, fprintf, printf and sprintf, so rlab
- inherits any bugs or limitations of the library functions.
-
- Using the load() function on the same line as another
- expression may cause the other expression to be ignored. For
- example:
-
- load ("test.r"); a = 100
-
- Will result in the second expression being ignored. This is
- caused by the original syntax being used with the new
- parser/machine capability. What happens: the tokens for the
- second expression get wiped out when the parser is called to
- start parsing the statements in test.r. The workaround is
- simple; don't put calls to load() on the same line as other
- expressions. This bug will be fixed in one or two releases.
-
- Send bug reports to: ians@eskimo.com.
-
- Bug reports should include the rlab version number, a short
- rfile that exercises the bug, and a description of the host
- operating system and hardware.
-
- AUTHORS
- Ian Searle (ians@eskimo.com)
-
- Phillip Musumeci is the author of the RLaB Tutorial (Not
- Available Yet)
-
- Brad Hards is the author of the RLaB Reference Manual (Not
- Available Yet)
-
- Mike Brennan has contributed some code from mawk.
-
- SEE ALSO
- sh (1) more (1) exec (2)
-
- Version 0.95 beta 3 October 1993 3
-