time(3am)


NAME

   time - time functions for gawk

SYNOPSIS

   @load "time"

   time = gettimeofday()
   ret = sleep(amount)

DESCRIPTION

   The time extension adds two functions named gettimeofday() and sleep(),
   as follows.

   gettimeofday()
          This function returns the number of seconds since the Epoch as a
          floating-point  value.  It  should have subsecond precision.  It
          returns -1 upon error and sets ERRNO to indicate the problem.

   sleep(seconds)
          This function attempts to sleep for the given amount of seconds,
          which may include a fractional portion.  If seconds is negative,
          or the attempt to sleep fails,  then  it  returns  -1  and  sets
          ERRNO.   Otherwise,  the function should return 0 after sleeping
          for the indicated amount of time.

EXAMPLE

   @load "time"
   ...
   printf "It is now %g seconds since the Epoch\n", gettimeofday()
   printf "Pausing for a while... " ; sleep(2.5) ; print "done"

SEE ALSO

   GAWK:  Effective   AWK   Programming,   filefuncs(3am),   fnmatch(3am),
   fork(3am),   inplace(3am),  ordchr(3am),  readdir(3am),  readfile(3am),
   revoutput(3am), rwarray(3am).

   gettimeofday(2), nanosleep(2), select(2).

AUTHOR

   Arnold Robbins, arnold@skeeve.com.

COPYING PERMISSIONS

   Copyright  2012, 2013, Free Software Foundation, Inc.

   Permission is granted to make and distribute verbatim  copies  of  this
   manual  page  provided  the copyright notice and this permission notice
   are preserved on all copies.

   Permission is granted to copy and distribute modified versions of  this
   manual  page  under  the conditions for verbatim copying, provided that
   the entire resulting derived work is distributed under the terms  of  a
   permission notice identical to this one.

   Permission  is  granted  to  copy  and  distribute translations of this
   manual page into another  language,  under  the  above  conditions  for
   modified  versions, except that this permission notice may be stated in
   a translation approved by the Foundation.





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