icetWallTime -- timer function

       None known.

       Copyright (C)2003 Sandia Corporation

       Under the terms of Contract DE-AC04-94AL85000  with  Sandia  Corporation,  the  U.S.  Government  retains
       certain rights in this software.

       This source code is released under the New BSD License.

       Retrieves the current time, in seconds. The returned values of icetWallTime are only valid in relation to
       each  other. That is, the time may or may not have anything to do with the current date or time. However,
       the difference of values between two calls to icetWallTime is the elapsed time in seconds between the two
       calls. Thus, icetWallTime is handy for determining the running time of various subprocesses. icetWallTime
       is  used  internally  for  determining  the  values  for  the  state   variables   ICET_BUFFER_READ_TIME,
       ICET_BUFFER_WRITE_TIME,  ICET_COLLECT_TIME,  ICET_COMPARE_TIME,  ICET_COMPOSITE_TIME, ICET_COMPRESS_TIME,
       ICET_INTERLACE_TIME, ICET_RENDER_TIME, and ICET_TOTAL_DRAW_TIME.

       None.

icetWallTime--timerfunction

       The current time, in seconds.

icetGet(3)

IceT Reference                                  February 10, 2015                                icetWallTime(3)

       #include <IceT.h>

       IceTDouble icetWallTime(   void   )

       None.