ftime(3) - f39

1ftime(3)                   Library Functions Manual                   ftime(3)
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NAME

6       ftime - return date and time
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LIBRARY

9       Standard C library (libc, -lc)
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SYNOPSIS

12       #include <sys/timeb.h>
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14       int ftime(struct timeb *tp);
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DESCRIPTION

17       NOTE:  This  function  is no longer provided by the GNU C library.  Use
18       clock_gettime(2) instead.
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20       This function returns the current  time  as  seconds  and  milliseconds
21       since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).  The time is returned
22       in tp, which is declared as follows:
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24           struct timeb {
25               time_t         time;
26               unsigned short millitm;
27               short          timezone;
28               short          dstflag;
29           };
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31       Here time is the number of seconds since the Epoch, and millitm is  the
32       number  of  milliseconds since time seconds since the Epoch.  The time‐
33       zone field is the local timezone measured in minutes of  time  west  of
34       Greenwich (with a negative value indicating minutes east of Greenwich).
35       The dstflag field is a flag that, if nonzero, indicates  that  Daylight
36       Saving time applies locally during the appropriate part of the year.
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38       POSIX.1-2001  says that the contents of the timezone and dstflag fields
39       are unspecified; avoid relying on them.
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RETURN VALUE

42       This function always returns 0.  (POSIX.1-2001 specifies, and some sys‐
43       tems document, a -1 error return.)
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ATTRIBUTES

46       For  an  explanation  of  the  terms  used  in  this  section,  see at‐
47       tributes(7).
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49       ┌────────────────────────────────────────────┬───────────────┬─────────┐
50       │Interface                                   │ Attribute     │ Value   │
51       ├────────────────────────────────────────────┼───────────────┼─────────┤
52       │ftime()                                     │ Thread safety │ MT-Safe │
53       └────────────────────────────────────────────┴───────────────┴─────────┘
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STANDARDS

56       None.
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HISTORY

59       Removed in glibc 2.33.  4.2BSD, POSIX.1-2001.  Removed in POSIX.1-2008.
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61       This function is obsolete.  Don't use  it.   If  the  time  in  seconds
62       suffices,  time(2)  can  be  used;  gettimeofday(2) gives microseconds;
63       clock_gettime(2) gives nanoseconds but is not as widely available.
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BUGS

66       Early glibc2 is buggy and returns 0 in the millitm field;  glibc  2.1.1
67       is correct again.
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