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139 lines
2.6 KiB
Plaintext
139 lines
2.6 KiB
Plaintext
/*
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* deg - calculate in degrees, minutes, and seconds
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*
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* Copyright (C) 1999 David I. Bell
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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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* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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*
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* @(#) $Revision: 29.3 $
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* @(#) $Id: deg.cal,v 29.3 2003/01/21 11:12:37 chongo Exp $
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* @(#) $Source: /usr/local/src/cmd/calc/cal/RCS/deg.cal,v $
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*
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* Under source code control: 1990/02/15 01:50:33
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* File existed as early as: before 1990
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*
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* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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*/
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obj dms {deg, min, sec};
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define dms(deg, min, sec)
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{
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local ans;
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if (isnull(sec))
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sec = 0;
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if (isnull(min))
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min = 0;
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obj dms ans;
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ans.deg = deg;
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ans.min = min;
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ans.sec = sec;
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fixdms(ans);
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return ans;
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}
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define dms_add(a, b)
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{
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local obj dms ans;
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ans.deg = 0;
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ans.min = 0;
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ans.sec = 0;
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if (istype(a, ans)) {
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ans.deg += a.deg;
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ans.min += a.min;
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ans.sec += a.sec;
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} else
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ans.deg += a;
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if (istype(b, ans)) {
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ans.deg += b.deg;
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ans.min += b.min;
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ans.sec += b.sec;
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} else
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ans.deg += b;
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fixdms(ans);
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return ans;
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}
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define dms_neg(a)
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{
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local obj dms ans;
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ans.deg = -ans.deg;
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ans.min = -ans.min;
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ans.sec = -ans.sec;
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return ans;
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}
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define dms_sub(a, b)
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{
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return a - b;
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}
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define dms_mul(a, b)
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{
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local obj dms ans;
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if (istype(a, ans) && istype(b, ans))
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quit "Cannot multiply degrees together";
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if (istype(a, ans)) {
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ans.deg = a.deg * b;
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ans.min = a.min * b;
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ans.sec = a.sec * b;
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} else {
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ans.deg = b.deg * a;
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ans.min = b.min * a;
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ans.sec = b.sec * a;
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}
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fixdms(ans);
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return ans;
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}
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define dms_print(a)
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{
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print a.deg : 'd' : a.min : 'm' : a.sec : 's' :;
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}
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define dms_abs(a)
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{
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return a.deg + a.min / 60 + a.sec / 3600;
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}
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define fixdms(a)
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{
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a.min += frac(a.deg) * 60;
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a.deg = int(a.deg);
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a.sec += frac(a.min) * 60;
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a.min = int(a.min);
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a.min += a.sec // 60;
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a.sec %= 60;
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a.deg += a.min // 60;
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a.min %= 60;
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a.deg %= 360;
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}
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if (config("resource_debug") & 3) {
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print "obj dms {deg, min, sec} defined";
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}
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