Virtue is a mathematical processor shaped after
ideas from APL, mathematics and other language systems. Its final aim
is to implement the "knowledge" of mathematics and other
related areas in a simple and consistent framework.
Virtue is a vector/array 'processor', with a RPN
programming language. The Virtue
0.3 language (Virtue 0.3 is presently being developed towards n0.5, presently at n0.41.9!) is based on an approach of
defining an "Extremely Complex Instruction Set Computer",
actually a programmed processor, and is provided with a large set of
WORDs which operate on scalars, vectors and arrays (similary to the
APL
programming language). Virtue sentences are, however, not
syntactically complex as many computer languages are (including even
APL), but is, as a RPN language, more along the lines of Forth,
Postscript and
HP
RPN calculators.
Virtue is, inter alias, provided to be a "Grid
Service Library Application", i.e. an Application whose primary
intention is not to be used by itself, but to be used as a kind of
"processor", which enables specific complex processing to
be done by providing it with reasonable simple requests. As such,
Virtue can be used in "batch" mode on modern day grids,
submitting Virtue for execution with the Virtue programme as its
input data, and getting the processed results back in simple
alphanumeric form.
Virtue can, therefore, in addition to the usage
as a extremely complex calculator/processor, when used interactively,
be directly used by a Grid "Driver Application" to provide
full mathematical model processing.
Please check the abovementioned Virtue
0.3 language description before testing Virtue. To exit the
system, type the sentence: OFF.
Testing Virtue
For testing purposes, the newest version of
Virtue 0.3 is always available at
telnet grgur.irb.hr, Login:
Virtue, no password (Sun-3, 20MHz 68020+68881, 24MiB RAM,
SunOS 4.1.1),
and at telnet grampus.irb.hr,
Login: Virtue, no password (Intel PC, 2 * 1400Mhz Pentium3,
1GiB RAM, FreeBSD 6.2-RC2).
There is also a VERY experimental WebVirtue interface, which allows the user to use a common simple WEB browser, with javascript, to get an iteractive on-line session to Virtue. This interface, developed by Goran Topich allows the user to have a text editing screen, a one line command interface and the Virtue output on the same page. Copy-paste your programmes from any other window. Remark: do not keep important Virtue sentences (i.e. programmes) in the WebVirtue window, as it will be lost between sessions.
WebVirtue is available at: http://grampus.irb.hr/
Virtue 0.3 / Virtue 0.4 is also available for download
as an executable for a number of systems. As Virtue is still
in development, not all executables are the same version,
up to date or even available. Please check the specification for each
executable on the download page
HP RPN Calculator Trainer
Try the javascript implemented HP RPN calculator to get some feeling for RPN
Contact, comments, sugestions...
The Light Art, ref.:
.
Zorislav
Shoyat's profile at LinkedIn
Virtue
0.3