NAME¶
Tcl_GetTime - get date and time
SYNOPSIS¶
#include <tcl.h>
Tcl_GetTime( timePtr )
ARGUMENTS¶
- Tcl_Time * timePtr (out)
- Points to memory in which to store the date and time
information.
DESCRIPTION¶
The
Tcl_GetTime function retrieves the current time as a
Tcl_Time
structure in memory the caller provides. This structure has the following
definition:
typedef struct Tcl_Time {
long sec;
long usec;
} Tcl_Time;
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 regardless 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 precise
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
KEYWORDS¶
date, time