| Path : /usr/share/calc/ |
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| Current File : //usr/share/calc/deg.cal |
/*
* deg - calculate in degrees, minutes, and seconds
*
* Copyright (C) 1999 David I. Bell
*
* 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.
*
* Under source code control: 1990/02/15 01:50:33
* File existed as early as: before 1990
*
* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
*/
obj deg {deg, min, sec};
define deg(deg, min, sec)
{
local ans;
if (isnull(sec))
sec = 0;
if (isnull(min))
min = 0;
obj deg ans;
ans.deg = deg;
ans.min = min;
ans.sec = sec;
fixdeg(ans);
return ans;
}
define deg_add(a, b)
{
local obj deg ans;
ans.deg = 0;
ans.min = 0;
ans.sec = 0;
if (istype(a, ans)) {
ans.deg += a.deg;
ans.min += a.min;
ans.sec += a.sec;
} else
ans.deg += a;
if (istype(b, ans)) {
ans.deg += b.deg;
ans.min += b.min;
ans.sec += b.sec;
} else
ans.deg += b;
fixdeg(ans);
return ans;
}
define deg_neg(a)
{
local obj deg ans;
ans.deg = -a.deg;
ans.min = -a.min;
ans.sec = -a.sec;
return ans;
}
define deg_sub(a, b)
{
return a - b;
}
define deg_mul(a, b)
{
local obj deg ans;
if (istype(a, ans) && istype(b, ans))
quit "Cannot multiply degrees together";
if (istype(a, ans)) {
ans.deg = a.deg * b;
ans.min = a.min * b;
ans.sec = a.sec * b;
} else {
ans.deg = b.deg * a;
ans.min = b.min * a;
ans.sec = b.sec * a;
}
fixdeg(ans);
return ans;
}
define deg_print(a)
{
print a.deg : 'd' : a.min : 'm' : a.sec : 's' :;
}
define deg_abs(a)
{
return a.deg + a.min / 60 + a.sec / 3600;
}
define fixdeg(a)
{
a.min += frac(a.deg) * 60;
a.deg = int(a.deg);
a.sec += frac(a.min) * 60;
a.min = int(a.min);
a.min += a.sec // 60;
a.sec %= 60;
a.deg += a.min // 60;
a.min %= 60;
a.deg %= 360;
}
if (config("resource_debug") & 3) {
print "obj deg {deg, min, sec} defined";
}