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cf419fb329
Added several conversion functions:
Added builtin functions to convert between degrees and
degrees, minutes and seconds under the config("mod")
round rules:
d2dms(degs, d, m, s [,rnd]) - given degs, compute d, m, s
d2dm(degs, d, m [,rnd]) - given degs, compute d, m
See help/d2dms and help/d2dm.
Example:
; print d2dms(360.321,deg=,min=,sec=), deg, min, sec;
0.321 0 19 15.6
; print d2dm(360.321,deg=,min=), deg, min;
0.321 0 19.26
Added builtin functions to convert between gradians and
gradians, minutes and seconds under the config("mod")
round rules:
g2gms(grads, g, m, s [,rnd]) - given grads, compute g, m, s
g2gm(grads, g, m [,rnd]) - given grads, compute g, m
See help/g2gms and help/g2gm.
Example:
; print g2gms(400.321,grad=,min=,sec=), grad, min, sec;
0.321 0 19 15.6
; print g2gm(400.321,grad=,min=), grad, min;
0.321 0 19.26
Added builtin functions to convert between hours and
hours, minutes and seconds under the config("mod")
round rules:
h2hms(hours, h, m, s [,rnd]) - given hours, compute h, m, s
h2hm(hours, h, m [,rnd]) - given hours, compute h, m
See help/h2hms and help/h2hm.
Example:
; print h2hms(24.321,hour=,min=,sec=), hour, min, sec;
0.321 0 19 15.6
; print h2hm(24.321,hour=,min=), hour, min;
0.321 0 19.26
In addtion:
Renumbered regression tests 3408 thru 3437, to 9102 thru 9131.
Updated Added hms.cal resource file to use h2hms() builtin.
Updated Added dms.cal resource file to use d2dms() builtin.
Fix minor typo in help/mod SYNOPSIS.
Fix minor typo in help/quo SYNOPSIS.
Added a few more examples to help/strcmp.
365 lines
7.1 KiB
Plaintext
365 lines
7.1 KiB
Plaintext
/*
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* dms - calculate in degrees, minutes, and seconds (based on deg)
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*
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* Copyright (C) 1999,2010,2021 David I. Bell and 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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* 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 obj dms ans; /* return value */
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/* default missing args to 0 */
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if (isnull(sec)) {
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sec = 0;
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}
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if (isnull(min)) {
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min = 0;
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}
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/* load object */
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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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/* return properly formed object */
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ans = 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; /* return value */
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/* initialize value to 1st arg */
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if (istype(a, ans)) {
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/* 1st arg is dms object, load it */
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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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/* 1st arg is not dms, assume scalar degrees */
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ans.deg = a;
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ans.min = 0;
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ans.sec = 0;
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}
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/* add value of 2nd arg */
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if (istype(b, ans)) {
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/* 2nd arg is dms object, add it */
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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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/* 2nd arg is not dms, add scalar degrees */
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ans.deg += b;
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}
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/* return normalized result */
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ans = 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; /* return value */
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/* negate argument */
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if (istype(a, ans)) {
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/* 1st arg is dms object, load it */
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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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/* 2nd arg is not dms, negate scalar degrees */
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ans.deg = -a;
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ans.min = 0;
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ans.sec = 0;
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}
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/* return normalized result */
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ans = fixdms(ans);
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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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local obj dms ans; /* return value */
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/* initialize value to 1st arg */
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if (istype(a, ans)) {
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/* 1st arg is dms object, load it */
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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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/* 1st arg is not dms, assume scalar degrees */
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ans.deg = a;
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ans.min = 0;
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ans.sec = 0;
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}
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/* subtract value of 2nd arg */
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if (istype(b, ans)) {
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/* 2nd arg is dms object, subtract it */
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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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/* 2nd arg is not dms, subtract scalar degrees */
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ans.deg -= b;
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}
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/* return normalized result */
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ans = fixdms(ans);
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return ans;
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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; /* return value */
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/* dms object multiplication */
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if (istype(a, ans) && istype(b, ans)) {
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ans.deg = dms_abs(a) * dms_abs(b);
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ans.min = 0;
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ans.sec = 0;
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/* scalar multiplication */
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} else 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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/* return normalized result */
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ans = 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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local obj dms ans; /* temp object for dms type testing */
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/* firewall - arg must be a dms object */
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if (! istype(a, ans)) {
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quit "dms_print called with non dms object";
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}
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/* print in dms form */
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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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local obj dms ans; /* temp object for dms type testing */
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local deg; /* return scalar value */
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/* firewall - just absolute value non dms objects */
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if (! istype(a, ans)) {
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return abs(a);
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}
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/* compute degrees */
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deg = a.deg + a.min / 60 + a.sec / 3600;
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/* return degrees */
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return deg;
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}
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define dms_norm(a)
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{
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local obj dms ans; /* temp object for dms type testing */
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local deg; /* degrees */
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/* firewall - arg must be a dms object */
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if (! istype(a, ans)) {
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quit "dms_norm called with non dms object";
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}
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/* square degrees (norm is the square of absolute value */
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deg = dms_abs(a);
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/* return degrees */
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return deg*deg;
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}
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define dms_test(a)
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{
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local obj dms ans; /* temp value */
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/* firewall - arg must be a dms object */
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if (! istype(a, ans)) {
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quit "dms_test called with non dms object";
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}
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/* return false of non-zero */
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ans = fixdms(a);
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if (ans.deg == 0 && ans.min == 0 && ans.sec == 0) {
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/* false */
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return 0;
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}
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/* true */
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return 1;
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}
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define dms_int(a)
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{
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local obj dms ans; /* return value */
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/* firewall - arg must be a dms object */
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if (! istype(a, ans)) {
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quit "dms_int called with non dms object";
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}
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/* normalize the argument */
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ans = fixdms(a);
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/* truncate to the nearest second */
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ans.sec = int(ans.sec);
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/* return value to the nearest second */
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return ans;
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}
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define dms_frac(a)
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{
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local obj dms ans; /* return value */
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/* firewall - arg must be a dms object */
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if (! istype(a, ans)) {
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quit "dms_frac called with non dms object";
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}
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/* normalize the argument */
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ans = fixdms(a);
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/* remove all but fractional seconds */
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ans.deg = 0;
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ans.min = 0;
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ans.sec = frac(ans.sec);
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/* return value to the second fraction */
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return ans;
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}
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define dms_rel(a,b)
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{
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local abs_a, abs_b; /* scalars of the arguments */
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/* compute scalars of the arguments */
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abs_a = dms_abs(a);
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abs_b = dms_abs(b);
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/* return the comparison */
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return cmp(abs_a, abs_b);
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}
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define dms_cmp(a,b)
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{
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local abs_a, abs_b; /* scalars of the arguments */
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/* compute scalars of the arguments */
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abs_a = dms_abs(a);
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abs_b = dms_abs(b);
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/* return the equality comparison */
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return (abs_a == abs_b);
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}
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define dms_inc(a)
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{
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local obj dms ans; /* return value */
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/* increment a dms object */
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if (istype(a, ans)) {
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ans = a;
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++ans.sec;
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/* return normalized result */
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ans = fixdms(ans);
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return ans;
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}
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/* increment a scalar */
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return a+1;
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}
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define dms_dec(a)
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{
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local obj dms ans; /* return value */
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/* decrement a dms object */
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if (istype(a, ans)) {
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ans = a;
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--ans.sec;
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/* return normalized result */
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ans = fixdms(ans);
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return ans;
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}
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/* decrement a scalar */
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return a-1;
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}
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define fixdms(a)
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{
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local obj dms ans; /* temp value */
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/* firewall */
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if (! istype(a, ans)) {
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quit "attempt to fix a non dms object";
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}
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/* use builtin d2dms function */
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d2dms(a.deg + a.min/60 + a.sec/3600, a.deg, a.min, a.sec),;
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/* return normalized result */
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return a;
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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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