! +-======-+ 
!  Copyright (c) 2003-2018 United States Government as represented by 
!  the Admistrator of the National Aeronautics and Space Administration.  
!  All Rights Reserved.
!  
!  THIS OPEN  SOURCE  AGREEMENT  ("AGREEMENT") DEFINES  THE  RIGHTS  OF USE,
!  REPRODUCTION,  DISTRIBUTION,  MODIFICATION AND REDISTRIBUTION OF CERTAIN 
!  COMPUTER SOFTWARE ORIGINALLY RELEASED BY THE UNITED STATES GOVERNMENT AS 
!  REPRESENTED BY THE GOVERNMENT AGENCY LISTED BELOW ("GOVERNMENT AGENCY").  
!  THE UNITED STATES GOVERNMENT, AS REPRESENTED BY GOVERNMENT AGENCY, IS AN 
!  INTENDED  THIRD-PARTY  BENEFICIARY  OF  ALL  SUBSEQUENT DISTRIBUTIONS OR 
!  REDISTRIBUTIONS  OF THE  SUBJECT  SOFTWARE.  ANYONE WHO USES, REPRODUCES, 
!  DISTRIBUTES, MODIFIES  OR REDISTRIBUTES THE SUBJECT SOFTWARE, AS DEFINED 
!  HEREIN, OR ANY PART THEREOF,  IS,  BY THAT ACTION, ACCEPTING IN FULL THE 
!  RESPONSIBILITIES AND OBLIGATIONS CONTAINED IN THIS AGREEMENT.
!  
!  Government Agency: National Aeronautics and Space Administration
!  Government Agency Original Software Designation: GSC-15354-1
!  Government Agency Original Software Title:  GEOS-5 GCM Modeling Software
!  User Registration Requested.  Please Visit http://opensource.gsfc.nasa.gov
!  Government Agency Point of Contact for Original Software:  
!  			Dale Hithon, SRA Assistant, (301) 286-2691
!  
! +-======-+ 
!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
! NASA/GSFC, Global Modeling and Assimilation Office, 900.3, GEOS/DAS  !
!BOP -------------------------------------------------------------------
!
! !MODULE: m_sysclocks - a standard binding to system clocks in C
!
! !DESCRIPTION:
!
! !INTERFACE:
!#include "regime.H"

    module m_sysclocks
      implicit none
      private	! except

      public:: sysclocks_get

      interface sysclocks_get
        subroutine sysclocks_get(times) bind(C,name='get_zeits_')
	  ! void get_zeits_(double *zts){}
	  use, intrinsic:: ISO_C_BINDING, only: C_DOUBLE
	  implicit none
	  real(C_DOUBLE),dimension(*),intent(out):: times
        end subroutine sysclocks_get
      end interface

! !REVISION HISTORY:
! 	29Jun12	-  <jguo@gmao.gsfc.nasa.gov>
!		- initial prototype/prolog/code
!EOP ___________________________________________________________________

  character(len=*),parameter :: myname='m_sysclocks'

!_UTC_program tc_sysclocks
!_UTC_  ! -- a testcase of this module --
!_UTC_  use m_sysclocks, only: get_times => sysclocks_get ! => get_zeits_
!_UTC_
!_UTC_  implicit none
!_UTC_  character(len=*),parameter :: myname='tc_sysclocks'
!_UTC_  real*8,dimension(5):: times
!_UTC_  integer:: i,k
!_UTC_
!_UTC_  call get_times(times) 
!_UTC_  print'(2a,f15.4,4f10.4)',myname,'(.begin.): ',times
!_UTC_  k=0
!_UTC_  do i=1,100000000
!_UTC_    k=2*sin(i*1.)
!_UTC_  enddo
!_UTC_  call get_times(times) 
!_UTC_  if(k>5) print'(2a,i2)',myname,'(.-bad-.): ',k
!_UTC_  print'(2a,f15.4,4f10.4)',myname,'(.-end-.): ',times
!_UTC_end program tc_sysclocks
end module m_sysclocks