mirror of
https://frontier.innolan.net/rainlance/amiga-tz.git
synced 2026-10-02 15:01:45 +00:00
111 lines
2.0 KiB
Plaintext
111 lines
2.0 KiB
Plaintext
.TH NEWCTIME 3
|
|
.SH NAME
|
|
settz, ctime, localtime, gmtime, asctime, zonetime, tzset \- convert date and time to ASCII
|
|
.SH SYNOPSIS
|
|
.nf
|
|
.B settz(zonename)
|
|
.B char *zonename;
|
|
.PP
|
|
.B char *ctime(clock)
|
|
.B long *clock;
|
|
.PP
|
|
.B #include <time.h>
|
|
.PP
|
|
.B struct tm *localtime(clock)
|
|
.B long *clock;
|
|
.PP
|
|
.B struct tm *gmtime(clock)
|
|
.B long *clock;
|
|
.PP
|
|
.B char *asctime(tm)
|
|
.B struct tm *tm;
|
|
.PP
|
|
.B struct tm * zonetime(timep, zone)
|
|
.B long *clock;
|
|
.B char *zone;
|
|
.PP
|
|
.B extern char *tzname[2];
|
|
.PP
|
|
.B void tzset()
|
|
.PP
|
|
.B cc ... -lz
|
|
.SH DESCRIPTION
|
|
.I Settz
|
|
sets time conversion information used by
|
|
.IR localtime .
|
|
If
|
|
.I zonename
|
|
begins with a slash,
|
|
it is used as the absolute pathname of the
|
|
.IR tzfile (5)-format
|
|
file from which to read the time conversion information;
|
|
if
|
|
.I zonename
|
|
begins with some other character,
|
|
it is used as a pathname relative to the standard time conversion information
|
|
directory. A call of the form
|
|
.ti +.5i
|
|
.B
|
|
settz("")
|
|
.br
|
|
causes built-in information about GMT to be used; a call of the form
|
|
.ti +.5i
|
|
.B
|
|
settz((char *) 0)
|
|
.br
|
|
is treated as if it were a call of the form
|
|
.ti +.5i
|
|
.B
|
|
settz("localtime")
|
|
.PP
|
|
.IR Ctime ,
|
|
.IR localtime ,
|
|
.IR gmtime ,
|
|
and
|
|
.I asctime
|
|
have the same arguments and return values as
|
|
the seasoned versions described in
|
|
.IR ctime (3) .
|
|
If
|
|
.I localtime
|
|
is called before
|
|
.I settz
|
|
is called,
|
|
.I localtime
|
|
calls
|
|
.I settz
|
|
with the value returned by
|
|
.B
|
|
getenv("TZ").
|
|
.I Localtime
|
|
sets the
|
|
.BR tm_isdst 'th
|
|
element of
|
|
.B tzname
|
|
to a pointer to an
|
|
ASCII string that's the time zone abbreviation to be used with
|
|
.IR localtime 's
|
|
return value.
|
|
.PP
|
|
.I Zonetime
|
|
converts the argument time using the argument zone,
|
|
without affecting the zone used in future
|
|
.I localtime
|
|
calls.
|
|
.PP
|
|
.I Settz
|
|
simply calls
|
|
.I tzset
|
|
with a
|
|
.B NULL
|
|
pointer.
|
|
.SH DIAGNOSTICS
|
|
.I Settz
|
|
returns zero if all seems well; it returns negative one otherwise
|
|
(and sets things up so that its built-in information about GMT is used).
|
|
.SH FILES
|
|
/etc/zoneinfo standard time conversion information directory
|
|
.SH "SEE ALSO"
|
|
ctime(3), getenv(3), tzfile(5)
|
|
.. %W%
|