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