.\" t
.\" ccard - credit card number validation .\" 1994 Peter Miller .\" Public Domain .\" .\" This program is distributed in the hope that it will be useful, .\" but WITHOUT ANY WARRANTY; without even the implied warranty of .\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
.\"
.\" MANIFEST: source for the README file
.\"
.TH readme ccard
.SH NAME
ccard \- credit card number validation
.SH DESCRIPTION
This program may be used to validate credit card numbers.
The format is a soubroutine to do the checking, and a small main()
to test it with.
It works correctly for all of my credit cards,
no other claims of accuracy are made!
.PP
The code should work on must C comopilers,
but I've only tested it on SunOS 4.1.3 cc and gcc-2.6.0.
.SH HISTORY
The original program was written in BASIC and posted to
.I alt.sources.wanted
in October, 1994.
The original author was
Chris Stone <cstone@hms.com>.
.PP
It was then translated into C by Peter Miller <pmiller@agso.gov.au>
and posted to
.I alt.sources
later the same month.
This program then received more email feedback in the first week
the the author's more serious efforts did in the same time.
.SH AUTHORS
Derived from code by Chris Stone <cstone@hms.com>, The High
Mountain Software Internet Gateway.
.PP
Translated to C by Peter Miller, 28-Oct-94.
.PP
This source is hereby placed in the Public Domain.
Please leave the authors' names on it,
and document all changes.
.SH NO WARRANTY
BECAUSE THE PROGRAM IS IN THE PUBLIC DOMAIN, THERE IS NO
WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE
LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE AUTHORS
AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO
THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD
THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
NECESSARY SERVICING, REPAIR OR CORRECTION.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY AUTHOR, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH AUTHOR OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.