| Path : /proc/self/root/usr/share/calc/ |
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| Current File : //proc/self/root/usr/share/calc/hms.cal |
/*
* hms - calculate in hours, minutes, and seconds
*
* Copyright (C) 2010 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.
*
* Under source code control: 2010/09/01 17:14:55
* File existed as early as: 2010
*
* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
*/
obj hms {hour, min, sec};
define hms(hour, min, sec)
{
local obj hms ans; /* return value */
/* default missing args to 0 */
if (isnull(sec)) {
sec = 0;
}
if (isnull(min)) {
min = 0;
}
/* load object */
ans.hour = hour;
ans.min = min;
ans.sec = sec;
/* return properly formed object */
ans = fixhms(ans);
return ans;
}
define hms_add(a, b)
{
local obj hms ans; /* return value */
/* initalize value to 1st arg */
if (istype(a, ans)) {
/* 1st arg is hms object, load it */
ans.hour = a.hour;
ans.min = a.min;
ans.sec = a.sec;
} else {
/* 1st arg is not hms, assume scalar hours */
ans.hour = a;
ans.min = 0;
ans.sec = 0;
}
/* add value of 2nd arg */
if (istype(b, ans)) {
/* 2nd arg is hms object, add it */
ans.hour += b.hour;
ans.min += b.min;
ans.sec += b.sec;
} else {
/* 2nd arg is not hms, add scalar hours */
ans.hour += b;
}
/* return normalized result */
ans = fixhms(ans);
return ans;
}
define hms_neg(a)
{
local obj hms ans; /* return value */
/* negate argument */
if (istype(a, ans)) {
/* 1st arg is hms object, load it */
ans.hour = -a.hour;
ans.min = -a.min;
ans.sec = -a.sec;
} else {
/* 2nd arg is not hms, negate scalar hours */
ans.hour = -a;
ans.min = 0;
ans.sec = 0;
}
/* return normalized result */
ans = fixhms(ans);
return ans;
}
define hms_sub(a, b)
{
local obj hms ans; /* return value */
/* initalize value to 1st arg */
if (istype(a, ans)) {
/* 1st arg is hms object, load it */
ans.hour = a.hour;
ans.min = a.min;
ans.sec = a.sec;
} else {
/* 1st arg is not hms, assume scalar hours */
ans.hour = a;
ans.min = 0;
ans.sec = 0;
}
/* subtract value of 2nd arg */
if (istype(b, ans)) {
/* 2nd arg is hms object, subtract it */
ans.hour -= b.hour;
ans.min -= b.min;
ans.sec -= b.sec;
} else {
/* 2nd arg is not hms, subtract scalar hours */
ans.hour -= b;
}
/* return normalized result */
ans = fixhms(ans);
return ans;
}
define hms_mul(a, b)
{
local obj hms ans; /* return value */
/* hms object multiplication */
if (istype(a, ans) && istype(b, ans)) {
ans.hour = hms_abs(a) * hms_abs(b);
ans.min = 0;
ans.sec = 0;
/* scalar multiplication */
} else if (istype(a, ans)) {
ans.hour = a.hour * b;
ans.min = a.min * b;
ans.sec = a.sec * b;
} else {
ans.hour = b.hour * a;
ans.min = b.min * a;
ans.sec = b.sec * a;
}
/* return normalized result */
ans = fixhms(ans);
return ans;
}
define hms_print(a)
{
local obj hms ans; /* temp object for hms type testing */
/* firewall - arg must be a hms object */
if (! istype(a, ans)) {
quit "hms_print called with non hms object";
}
/* print in hms form */
print a.hour : ':' : a.min : ':' : a.sec :;
}
define hms_abs(a)
{
local obj hms ans; /* temp object for hms type testing */
local hour; /* return scalar value */
/* firewall - just absolute value non hms objects */
if (! istype(a, ans)) {
return abs(a);
}
/* compute hours */
hour = a.hour + a.min / 60 + a.sec / 3600;
/* return hours */
return hour;
}
define hms_norm(a)
{
local obj hms ans; /* temp object for hms type testing */
local hour; /* hours */
/* firewall - arg must be a hms object */
if (! istype(a, ans)) {
quit "hms_norm called with non hms object";
}
/* square hours (norm is the square of absolute value */
hour = hms_abs(a);
/* return hours */
return hour*hour;
}
define hms_test(a)
{
local obj hms ans; /* temp value */
/* firewall - arg must be a hms object */
if (! istype(a, ans)) {
quit "hms_test called with non hms object";
}
/* return false of non-zero */
ans = fixhms(a);
if (ans.hour == 0 && ans.min == 0 && ans.sec == 0) {
/* false */
return 0;
}
/* true */
return 1;
}
define hms_int(a)
{
local obj hms ans; /* return value */
/* firewall - arg must be a hms object */
if (! istype(a, ans)) {
quit "hms_int called with non hms object";
}
/* normalize the argument */
ans = fixhms(a);
/* truncate to the nearest second */
ans.sec = int(ans.sec);
/* return value to the nearest second */
return ans;
}
define hms_frac(a)
{
local obj hms ans; /* return value */
/* firewall - arg must be a hms object */
if (! istype(a, ans)) {
quit "hms_frac called with non hms object";
}
/* normalize the argument */
ans = fixhms(a);
/* remove all but fractional seconds */
ans.hour = 0;
ans.min = 0;
ans.sec = frac(ans.sec);
/* return value to the second fraction */
return ans;
}
define hms_rel(a,b)
{
local abs_a, abs_b; /* scalars of the arguments */
/* compute scalars of the arguments */
abs_a = hms_abs(a);
abs_b = hms_abs(b);
/* return the comparison */
return cmp(abs_a, abs_b);
}
define hms_cmp(a,b)
{
local abs_a, abs_b; /* scalars of the arguments */
/* compute scalars of the arguments */
abs_a = hms_abs(a);
abs_b = hms_abs(b);
/* return the equality comparison */
return (abs_a == abs_b);
}
define hms_inc(a)
{
local obj hms ans; /* return value */
/* increment a hms object */
if (istype(a, ans)) {
ans = a;
++ans.sec;
/* return normalized result */
ans = fixhms(ans);
return ans;
}
/* increment a scalar */
return a+1;
}
define hms_dec(a)
{
local obj hms ans; /* return value */
/* decrement a hms object */
if (istype(a, ans)) {
ans = a;
--ans.sec;
/* return normalized result */
ans = fixhms(ans);
return ans;
}
/* decrement a scalar */
return a-1;
}
define fixhms(a)
{
local obj hms ans; /* temp value */
/* firewall */
if (! istype(a, ans)) {
quit "attempt to fix a non hms object";
}
/* force minutes to be intergral */
a.min += frac(a.hour) * 60;
a.hour = int(a.hour);
/* force hours to be intergral */
a.sec += frac(a.min) * 60;
a.min = int(a.min);
/* carry excess seconds into minutes */
a.min += a.sec // 60;
a.sec %= 60;
/* carry excess minutes into hours */
a.hour += a.min // 60;
a.min %= 60;
/* round hours by day */
a.hour %= 24;
/* return normalized result */
return a;
}
if (config("resource_debug") & 3) {
print "obj hms {hour, min, sec} defined";
}