mirror of
https://github.com/lcn2/calc.git
synced 2025-08-19 01:13:27 +03:00
71 lines
2.0 KiB
Plaintext
71 lines
2.0 KiB
Plaintext
/*
|
|
* register - set or print a custom register value
|
|
*
|
|
* Copyright (C) 2007 Landon Curt Noll
|
|
*
|
|
* Calc is open software; you can redistribute it and/or modify it under
|
|
* the terms of the version 2.1 of the GNU Lesser General Public License
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* Calc 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. See the GNU Lesser General
|
|
* Public License for more details.
|
|
*
|
|
* A copy of version 2.1 of the GNU Lesser General Public License is
|
|
* distributed with calc under the filename COPYING-LGPL. You should have
|
|
* received a copy with calc; if not, write to Free Software Foundation, Inc.
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
* @(#) $Revision: 30.1 $
|
|
* @(#) $Id: register.cal,v 30.1 2007/07/05 19:35:54 chongo Exp $
|
|
* @(#) $Source: /usr/local/src/cmd/calc/custom/RCS/register.cal,v $
|
|
*
|
|
* Under source code control: 2007/07/05 11:11:11
|
|
* File existed as early as: 2007
|
|
*
|
|
* chongo <was here> /\oo/\ http://www.isthe.com/chongo/
|
|
* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
|
|
*/
|
|
|
|
/*
|
|
* This file is part of the custom sample calc files.
|
|
*
|
|
* NOTE: You must use a calc that was compiled with ALLOW_CUSTOM= -DCUSTOM
|
|
* and run with a -C arg.
|
|
*/
|
|
if (config("compile_custom") == 0) {
|
|
quit "calc compiled without -DCUSTOM";
|
|
} else if (config("allow_custom") == 0) {
|
|
quit "calc was run without the -D command line option";
|
|
}
|
|
|
|
|
|
define register(num)
|
|
{
|
|
local reg_max; /* number of registers */
|
|
|
|
/*
|
|
* firewall
|
|
*/
|
|
if (!isnum(num)) {
|
|
return newerror("register only works on numeric values");
|
|
}
|
|
|
|
/*
|
|
* determine register count
|
|
*/
|
|
reg_max = custom("sysinfo", "REGNUM_MAX");
|
|
|
|
/*
|
|
* determine the HALF length of a numeric value
|
|
*/
|
|
if (num < 0) {
|
|
return newerror("register number must be >= 0");
|
|
} else if (num > reg_max) {
|
|
return newerror("register number must be < REGNUM_MAX");
|
|
} else {
|
|
return custom("register", num);
|
|
}
|
|
}
|