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gettimeofday (3)
  • gettimeofday (2) ( FreeBSD man: Системные вызовы )
  • gettimeofday (2) ( Русские man: Системные вызовы )
  • gettimeofday (2) ( Linux man: Системные вызовы )
  • gettimeofday (3) ( Solaris man: Библиотечные вызовы )
  • >> gettimeofday (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    gettimeofday - get the date and time
     
    

    SYNOPSIS

    #include <sys/time.h>

    int gettimeofday(struct timeval *restrict tp, void *restrict tzp);
     

    DESCRIPTION

    The gettimeofday() function shall obtain the current time, expressed as seconds and microseconds since the Epoch, and store it in the timeval structure pointed to by tp. The resolution of the system clock is unspecified.

    If tzp is not a null pointer, the behavior is unspecified.  

    RETURN VALUE

    The gettimeofday() function shall return 0 and no value shall be reserved to indicate an error.  

    ERRORS

    No errors are defined.

    The following sections are informative.  

    EXAMPLES

    None.  

    APPLICATION USAGE

    None.  

    RATIONALE

    None.  

    FUTURE DIRECTIONS

    None.  

    SEE ALSO

    ctime() , ftime() , the Base Definitions volume of IEEE Std 1003.1-2001, <sys/time.h>  

    COPYRIGHT

    Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    EXAMPLES
    APPLICATION USAGE
    RATIONALE
    FUTURE DIRECTIONS
    SEE ALSO
    COPYRIGHT


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