TclGetTime(3) Tcl Library Procedures TclGetTime(3)

NAME
       TclGetTime - get date and time

SYNOPSIS
       ##iinncclluuddee <>

       TTccllGGeettTTiimmee( timePtr )

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       TclTime *   timePtr   (out)     Points to memory in which to store the
                                        date and time information.


DESCRIPTION
       The TTccllGGeettTTiimmee function retrieves  the  current  time  as  a  TclTime
       structure  in  memory the caller provides.  This structure has the fol-
       lowing definition:
              typedef struct TclTime {
                  long sec;
                  long usec;
              } TclTime;

       On return, the sec member of the structure is filled in with the number
       of seconds that have elapsed since the epoch: the epoch is the point in
       time of 00:00 UTC, 1 January 1970.  This number  does  not  count  leap
       seconds  -  an interval of one day advances it by 86400 seconds regard-
       less of whether a leap second has been inserted.

       The usec member of the structure  is  filled  in  with  the  number  of
       microseconds that have elapsed since the start of the second designated
       by sec.  The Tcl library makes every effort to keep this number as pre-
       cise  as  possible,  subject to the limitations of the computer system.
       On multiprocessor variants of Windows, this number may  be  limited  to
       the 10- or 20-ms granularity of the system clock.  (On single-processor
       Windows systems, the usec field is derived from a  performance  counter
       and is highly precise.)

SEE ALSO
       clock

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       date, time



Tcl                                   8.4                       TclGetTime(3)