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libcalby: a tiny calendar library
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The libcalby provides a suite of tools to manage different calendars easy.
Currently supports Gregorian Calendar and Julian Calendar, and also support
a number of formats for date and time, including ISO, TAI64, Julian Date and
Modified Julian Date.
libcalby still under development, and new calendars and formats will be
added in the future.
Example of usage
----------------
#include <stdio.h>
#include "calby.h"
int
main (int argc, char **argv)
{
cal_datetime_t t;
uint64_t tai;
char buf[CAL_ISOFMT_LEN];
cal_now(&t); /* get current time */
cal_format(&t,buf); /* human readable */
/* print date-time in human readable form */
printf("%s\n", buf);
/* print julian date */
printf("%ld\n", cal_jd(&t));
/* print modified julian date */
printf("%ld\n", cal_mjd(&t));
/* print TAI form */
printf("@%llx\n", cal_tai(&t));
/* add leap seconds to tai */
/* /etc/leapseconds.dat must be exists */
tai = cal_tai(&t);
cal_leapsecs_add(&tai);
/* print TAI with leap seconds */
printf("@%llx\n", tai);
/* get julian calendar date */
cal_julian(&t);
cal_format(&t,buf);
printf("%s\n",buf);
}
Latest stable releases:
Source releases/libcalby-0.1.tar.gz
Signature releases/libcalby-0.1.tar.gz.asc
The source code of the project is managed by git, you can clone it in the
usual way:
git clone https://git.ajdiaz.me/libcalby
If you find any error in the code or incorrect behaviour, please do
not hesitate to report it in the devel mailing list:
libcalby-devel@lists.ajdiaz.me
Please note that you need to subscribe to the list prior to post to avoid
spam, just send an empty email to
with the text `subscribe libcalby-devel` in the subject.
Any suggestion, discussion or improvement are welcome, just mail to the
list!