Converts a binary timestamp to a tm structure, using the time
differential factor (TDF) information contained in the timestamp
to determine the TDF returned with the tm structure.
Format
#include <utc.h>
int utc_anytime(timetm, *tns, *inacctm, *ins, *tdf, *utc)
struct tm timetm;
long *tns;
struct tm *inacctm;
long *ins;
long *tdf;
const utc_t *utc;
1 – Parameters
Input
utc
Binary timestamp.
Output
timetm
Time component of the binary timestamp expressed in the
timestamp's local time.
tns
Nanoseconds since time component of the binary timestamp.
inacctm
Seconds of inaccuracy component of the binary timestamp. If the
inaccuracy is finite, then tm_mday returns a value of -1 and tm_
mon and tm_year return values of 0. The field tm_yday contains
the inaccuracy in days. If the inaccuracy is infinite, all tm
structure fields return values of -1.
ins
Nanoseconds of inaccuracy component of the binary timestamp.
tdf
TDF component of the binary timestamp in units of seconds east or
west of GMT.
2 – Description
The Any Time routine converts a binary timestamp to a tm
structure. The TDF information contained in the timestamp
is returned with the time and inaccuracy components; the TDF
component determines the offset from GMT and the local time value
of the tm structure. Additional returns include nanoseconds since
Time and nanoseconds of inaccuracy.
3 – Returns
0 Indicates that the routine executed successfully.
-1 Indicates an invalid time argument or invalid results.
4 – Example
The following example converts a timestamp, using the TDF
information in the timestamp, then prints the result.
utc_t evnt;
struct tm tmevnt;
timespec_t tevnt, ievnt;
char tznam[80];
/*
* Assume evnt contains the timestamp to convert...
*
* Get time as a tm structure, using the time zone information in
* the timestamp...
*/
utc_anytime(&tmevnt, /* Out: tm struct of time of evnt */
(long *)0, /* Out: nanosec of time of evnt */
(struct tm *)0, /* Out: tm struct of inacc of evnt */
(long *)0, /* Out: nanosec of inacc of evnt */
(int *)0, /* Out: tdf of evnt */
&evnt); /* In: binary timestamp of evnt */
/*
* Get the time and inaccuracy as timespec structures...
*/
utc_bintime(&tevnt, /* Out: timespec of time of evnt */
&ievnt, /* Out: timespec of inacc of evnt */
(int *)0, /* Out: tdf of evnt */
&evnt); /* In: Binary timestamp of evnt */
/*
* Construct the time zone name from time zone information in the
* timestamp...
*/
utc_anyzone(tznam, /* Out: Time zone name */
80, /* In: Size of time zone name */
(long *)0, /* Out: tdf of event */
(long *)0, /* Out: Daylight saving flag */
&evnt); /* In: Binary timestamp of evnt */
/*
* Print timestamp in the format:
*
* 1991-03-05-21:27:50.023I0.140 (GMT-5:00)
* 1992-04-02-12:37:24.003Iinf (GMT+7:00)
*
*/
printf("%d-%02d-%02d-%02d:%02d:%02d.%03d",
tmevnt.tm_year+1900, tmevnt.tm_mon+1, tmevnt.tm_mday,
tmevnt.tm_hour, tmevnt.tm_min, tmevnt.tm_sec,
(tevnt.tv_nsec/1000000));
if ((long)ievnt.tv_sec == -1)
printf("Iinf");
else
printf("I%d.%03d", ievnt.tv_sec, (ievnt.tv_nsec/1000000));
printf(" (%s)\n", tznam);
5 – Related Functions
utc_mkanytime, utc_anyzone, utc_gettime, utc_getusertime, utc_
gmtime, utc_localtime