Gets the local time zone label and offset from GMT, given utc.

    Format

      #include <utc.h>

      int utc_localzone(*tzname, tzlen, *tdf, *isdst, *utc)

         char *tzname;
         size_t tzlen;
         long *tdf;
         int *isdst;
         const utc_t *utc;

      #include <utc.h>

      int utc_localzone(*tzname, tzlen, *tdf, *isdst, *utc)

1 - Parameters

    Input

 tzlen

    Length of the tzname buffer.

 utc

    Binary timestamp.

    Output

 tzname

    Character string long enough to hold the time zone label.

 tdf

    Longword with differential in seconds east or west of GMT.

 isdst

    Integer with a value of zero if standard time is in effect or a
    value of 1 if daylight savings time is in effect.

2 - Description

    The Local Zone routine gets the local time zone label and offset
    from GMT, given utc.

    OpenVMS systems do not have a default time zone rule. You
    select a time zone by defining sys$timezone_rule during the
    sys$manager:net$configure.com procedure, or by explicitly
    defining sys$timezone_rule.

3 - Notes

    All of the output parameters are optional. No value is returned
    and no error occurs if the pointer is null.

4 - Returns

     0   Indicates that the routine executed successfully.
    -1   Indicates an invalid time argument or an insufficient buffer.

5 - Example

    See the sample program for the utc_gmtzone routine.

6 - Related Functions

    utc_anyzone, utc_gmtzone, utc_localtime