++year
Date to @da
Accept a parsed date of form [[a=? [email protected]] [email protected] t=tarp] and produce its @da representation.
Accepts
det is a date
Produces
A @da.
Source
++ year|= det=date^- @da=+ ^= yer?: a.det(add 292.277.024.400 y.det)(sub 292.277.024.400 (dec y.det))=+ day=(yawn yer m.det d.t.det)(yule day h.t.det m.t.det s.t.det f.t.det)
Examples
> (year [[a=%.y y=2.014] m=8 t=[d=4 h=20 m=4 s=57 f=~[0xd940]]])~2014.8.4..20.04.57..d940
++yore
Date from atomic date
Produces a date from a @da.
Accepts
now is a time atom, @da.
Produces
A date.
Source
++ yore|= now=@da^- date=+ rip=(yell now)=+ ger=(yall d.rip):- ?: (gth y.ger 292.277.024.400)[a=& y=(sub y.ger 292.277.024.400)][a=| y=+((sub 292.277.024.400 y.ger))][m.ger d.ger h.rip m.rip s.rip f.rip]
Examples
> (yore ~2014.6.6..21.09.15..0a16)[[a=%.y y=2.014] m=6 t=[d=6 h=21 m=9 s=15 f=~[0xa16]]]
++yell
Tarp from atomic date
Produce a $tarp time format from a@da.
Accepts
now is a @da.
Produces
A tarp.
Source
++ yell|= now=@d^- tarp=+ sec=(rsh 6 now)=+ ^= fan=+ [muc=4 raw=(end 6 now)]|- ^- (list @ux)?: |(=(0 raw) =(0 muc))~=> .(muc (dec muc))[(cut 4 [muc 1] raw) $(raw (end [4 muc] raw))]=+ day=(div sec day:yo)=> .(sec (mod sec day:yo))=+ hor=(div sec hor:yo)=> .(sec (mod sec hor:yo))=+ mit=(div sec mit:yo)=> .(sec (mod sec mit:yo))[day hor mit sec fan]
Examples
> (yell ~2014.3.20..05.42.53..7456)[d=106.751.991.820.094 h=5 m=42 s=53 f=~[0x7456]]> (yell ~2014.6.9..19.09.40..8b66)[d=106.751.991.820.175 h=19 m=9 s=40 f=~[0x8b66]]> (yell ~1776.7.4)[d=106.751.991.733.273 h=0 m=0 s=0 f=~]
++yule
Daily time to time atom
Accepts a $tarp, a parsed daily time, and produces a @da.
Accepts
rip is a tarp.
Produces
A time atom, @da.
Source
++ yule|= rip=tarp^- @d=+ ^= sec ;: add(mul d.rip day:yo)(mul h.rip hor:yo)(mul m.rip mit:yo)s.rip===+ ^= fac =+ muc=4|- ^- @?~ f.rip0=> .(muc (dec muc))(add (lsh [4 muc] i.f.rip) $(f.rip t.f.rip))(con (lsh 6 sec) fac)
Examples
> =murica (yell ~1776.7.4)> murica[d=106.751.991.733.273 h=0 m=0 s=0 f=~]> (yule murica)0x8000000b62aaf5800000000000000000> `@da`(yule murica)~1776.7.4> `@da`(yule (yell ~2014.3.20..05.42.53..7456))~2014.3.20..05.42.53..7456> `tarp`[31 12 30 0 ~][d=31 h=12 m=30 s=0 f=~]> `@dr`(yule `tarp`[31 12 30 0 ~])~d31.h12.m30
++yall
Time since beginning of time
Produce the date tuple of [[email protected] [email protected] [email protected]] of the year, month, and day from a number of days from the beginning of the Gregorian calendar.
Accepts
day is a @ud.
Produces
A cell of unsigned decimals.
Source
++ yall|= day=@ud^- [y=@ud m=@ud d=@ud]=+ [era=0 cet=0 lep=*?]=> .(era (div day era:yo), day (mod day era:yo))=> ^+ .?: (lth day +(cet:yo)).(lep &, cet 0)=> .(lep |, cet 1, day (sub day +(cet:yo))).(cet (add cet (div day cet:yo)), day (mod day cet:yo))=+ yer=(add (mul 400 era) (mul 100 cet))|- ^- [y=@ud m=@ud d=@ud]=+ dis=?:(lep 366 365)?. (lth day dis)=+ ner=+(yer)$(yer ner, day (sub day dis), lep =(0 (end [0 2] ner)))|- ^- [y=@ud m=@ud d=@ud]=+ [mot=0 cah=?:(lep moy:yo moh:yo)]|- ^- [y=@ud m=@ud d=@ud]=+ zis=(snag mot cah)?: (lth day zis)[yer +(mot) +(day)]$(mot +(mot), day (sub day zis))
Examples
> (yall 198)[y=0 m=7 d=17]> (yall 90.398)[y=247 m=7 d=3]> (yall 0)[y=0 m=1 d=1]
++yawn
Days since beginning of time
Inverse of yall, computes number of days A.D. from y/m/d date as the tuple [[email protected] [email protected] [email protected]].
Accepts
yer is an unsigned decimal.
mon is an unsigned decimal.
day is an unsigned decimal.
Produces
An unsigned decimal.
Source
++ yawn|= [yer=@ud mot=@ud day=@ud]^- @ud=> .(mot (dec mot), day (dec day))=> ^+ .%= .day=+ cah=?:((yelp yer) moy:yo moh:yo)|- ^- @ud?: =(0 mot)day$(mot (dec mot), cah (slag 1 cah), day (add day (snag 0 cah)))==|- ^- @ud?. =(0 (mod yer 4))=+ ney=(dec yer)$(yer ney, day (add day ?:((yelp ney) 366 365)))?. =(0 (mod yer 100))=+ nef=(sub yer 4)$(yer nef, day (add day ?:((yelp nef) 1.461 1.460)))?. =(0 (mod yer 400))=+ nec=(sub yer 100)$(yer nec, day (add day ?:((yelp nec) 36.525 36.524)))(add day (mul (div yer 400) (add 1 (mul 4 36.524))))
Examples
> (yawn 2.018 7 4)737.244> (yawn 1.776 7 4)648.856> (yawn 1.990 10 11)727.116
++yelp
Leap year?
Determines whether a year is a leap year. Produces a flag.
Accepts
yer is an unsigned decimal.
Produces
A flag.
Source
++ yelp|= yer=@ud ^- ?&(=(0 (mod yer 4)) |(!=(0 (mod yer 100)) =(0 (mod yer 400))))
Examples
> (yelp 2.014)%.n> (yelp 2.008)%.y> (yelp 0)%.y> (yelp 14.011)%.n
++yo
Time constants core
Core whose arms contain constants for interacting with earth time.
Source
++ yo
++cet:yo
Days in a century
Derived by multiplying the number of days in a year (365) by the number of years in a century (100), then adding the number days from leap-years in a century (24).
Produces
An atom.
Source
++ cet 36.524
Examples
> cet:yo36.524> (add 365 cet:yo)36.889> (sub (add 24 (mul 100 365)) cet:yo)0
++day:yo
Seconds in day
The number of seconds in a day.
Produces
An atom.
Source
++ day 86.400
Examples
> day:yo86.400> (add 60 day:yo)86.460
++era:yo
Leap-year period
The number of days in a 400-year period, arrived at by multiplying cet by four and adding one. This is done because every 400 years, there is a leap-year where there would otherwise not be.
Produces
An atom.
Source
++ era 146.097
Examples
> era:yo146.097> (sub era:yo (mul 4 cet:yo))1
Discussion
A year is a leap-year if:
- it's divisible by 4;
- unless it's divisible by 100;
- or if it's divisible by 400.
++hor:yo
Seconds in hour
The number of seconds in an hour. Derived by multiplying the number of seconds in a minute by the minutes in an hour.
Produces
An atom.
Source
++ hor 3.600
Examples
> hor:yo3.600> (div hor:yo 60)60
++jes:yo
Maximum 64-bit timestamp
This is the number of days (starting from 1970) that can be represented in a 64-bit timestamp. Derived by multiplying era:yo by 730,692,561.
Produces
An atom.
Source
++ jes 106.751.991.084.417
Examples
> jes:yo106.751.991.084.417
Discussion
The date is December 4, 292,277,026,596.
++mit:yo
Seconds in minute
The number of seconds in a minute.
Produces
An atom.
Source
++ mit 60
Examples
> mit:yo60
++moh:yo
Days in month
The days in each month of the Gregorian common year. A list of unsigned decimal atoms (Either 28, 30, or 31) denoting the number of days in the month at the year at that index.
Produces
A list of @ud
Source
++ moh `(list @ud)`[31 28 31 30 31 30 31 31 30 31 30 31 ~]
Examples
> moh:yo~[31 28 31 30 31 30 31 31 30 31 30 31]> (snag 4 moh:yo)31
++moy:yo
Days in months of leap-year
The days in each month of the Gregorian leap-year. A list of unsigned decimal atoms (Either 29, 30, or 31) denoting the number of days in the month at the leap-year at that index.
Produces
A list of @ud.
Source
++ moy `(list @ud)`[31 29 31 30 31 30 31 31 30 31 30 31 ~]
Examples
> moy:yo~[31 29 31 30 31 30 31 31 30 31 30 31]> (snag 1 moy:yo)29
++qad:yo
Seconds in 4 years
The number of seconds in four years. Derived by adding one second to the number of seconds in four years.
Produces
An atom.
Source
++ qad 126.144.001
Examples
> qad:yo126.144.001
++yer:yo
Seconds in year
The number of seconds in a year. Derived by multiplying the number of seconds in a day by 365.
Produces
An atom.
Source
++ yer 31.536.000
Examples
> yer:yo31.536.000