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C $Header: /u/gcmpack/MITgcm/pkg/cal/cal_timepassed.F,v 1.2 2003/10/09 04:19:19 edhill Exp $ |
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C $Name: $ |
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|
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#include "CAL_OPTIONS.h" |
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|
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SUBROUTINE CAL_TIMEPASSED( |
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I initialdate, |
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I finaldate, |
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O numdays, |
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I myThid ) |
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|
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C ================================================================== |
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C SUBROUTINE cal_TimePassed |
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C ================================================================== |
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C |
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C o Calculate the time that passed between initialdate and |
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C finaldate. |
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C |
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C started: Christian Eckert eckert@mit.edu 30-Jun-1999 |
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C changed: Christian Eckert eckert@mit.edu 29-Dec-1999 |
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C - restructured the original version in order to have a |
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C better interface to the MITgcmUV. |
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C Christian Eckert eckert@mit.edu 03-Feb-2000 |
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C - Introduced new routine and function names, cal_<NAME>, |
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C for verion 0.1.3. |
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C |
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C ================================================================== |
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C SUBROUTINE cal_TimePassed |
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C ================================================================== |
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|
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IMPLICIT NONE |
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|
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C == global variables == |
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#include "EEPARAMS.h" |
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#include "cal.h" |
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|
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C == routine arguments == |
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INTEGER initialdate(4) |
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INTEGER finaldate(4) |
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INTEGER numdays(4) |
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INTEGER myThid |
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|
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C == external == |
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INTEGER cal_IsLeap |
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EXTERNAL cal_IsLeap |
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|
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C == local variables == |
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INTEGER yi,yf |
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INTEGER mi,mf |
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INTEGER di,df |
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INTEGER si,sf |
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INTEGER li,lf |
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INTEGER wi,wf |
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INTEGER cdi,cdf |
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INTEGER csi,csf |
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INTEGER ndays |
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INTEGER nsecs |
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INTEGER hhmmss |
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INTEGER imon |
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INTEGER iyr |
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INTEGER ierr |
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LOGICAL swap |
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LOGICAL caldates |
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LOGICAL nothingtodo |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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|
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C == end of interface == |
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|
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IF ( cal_setStatus .LT. 1 ) THEN |
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WRITE( msgBuf,'(2A,4I9)') 'CAL_TIMEPASSED: ', 'initialdate=', |
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& initialdate(1),initialdate(2),initialdate(3),initialdate(4) |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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WRITE( msgBuf,'(2A,4I9)') 'CAL_TIMEPASSED: ', 'finaldate=', |
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& finaldate(1),finaldate(2),finaldate(3),finaldate(4) |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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WRITE( msgBuf,'(2A,I2,A)') 'CAL_TIMEPASSED: ', |
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& 'called too early (cal_setStatus=',cal_setStatus,' )' |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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STOP 'ABNORMAL END: S/R CAL_TIMEPASSED' |
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ENDIF |
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|
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nothingtodo = .false. |
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|
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C Initialise output. |
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numdays(1) = 0 |
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numdays(2) = 0 |
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numdays(3) = 0 |
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numdays(4) = -1 |
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|
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if ((initialdate(4) .gt. 0) .eqv. |
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& ( finaldate(4) .gt. 0)) then |
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|
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caldates = (initialdate(4) .gt. 0) .and. |
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& ( finaldate(4) .gt. 0) |
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|
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C Check relation between initial and final dates. |
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if (initialdate(1) .eq. finaldate(1)) then |
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if (initialdate(2) .eq. finaldate(2)) then |
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nothingtodo = .true. |
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else if (initialdate(2) .gt. finaldate(2)) then |
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swap = .true. |
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else |
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swap = .false. |
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endif |
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else if (initialdate(1) .gt. finaldate(1)) then |
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swap = .true. |
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else |
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swap = .false. |
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endif |
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|
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if (.not. nothingtodo) then |
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|
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if (swap) then |
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call cal_ConvDate( finaldate,yi,mi,di,si,li,wi,myThid ) |
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call cal_ConvDate( initialdate,yf,mf,df,sf,lf,wf,myThid ) |
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else |
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call cal_ConvDate( initialdate,yi,mi,di,si,li,wi,myThid ) |
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call cal_ConvDate( finaldate,yf,mf,df,sf,lf,wf,myThid ) |
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endif |
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|
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C Determine the time interval. |
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if (.not. caldates) then |
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ndays = df - di |
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nsecs = sf - si |
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if (nsecs .lt. 0) then |
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nsecs = nsecs + secondsperday |
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ndays = ndays - 1 |
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endif |
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ndays = ndays + nsecs/secondsperday |
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nsecs = mod(nsecs,secondsperday) |
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else |
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si = si + (di-1)*secondsperday |
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sf = sf + (df-1)*secondsperday |
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cdi = 0 |
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do imon = 1,mod(mi-1,12) |
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cdi = cdi + ndaymonth(imon,li) |
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enddo |
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csi = si |
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cdf = 0 |
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do imon = 1,mod(mf-1,12) |
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cdf = cdf + ndaymonth(imon,lf) |
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enddo |
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csf = sf |
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|
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if (yi .eq. yf) then |
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ndays = (cdf + csf/secondsperday) - |
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& (cdi + csi/secondsperday) |
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nsecs = (csf - (csf/secondsperday)*secondsperday) - |
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& (csi - (csi/secondsperday)*secondsperday) |
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if (nsecs .lt. 0) then |
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nsecs = nsecs + secondsperday |
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ndays = ndays - 1 |
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endif |
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else |
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ndays = (ndaysnoleap - 1) + cal_IsLeap( yi, myThid ) - |
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& cdi - ndaymonth(mi,li) |
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do iyr = yi+1,yf-1 |
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ndays = ndays + (ndaysnoleap - 1) + |
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& cal_IsLeap( iyr, myThid ) |
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enddo |
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ndays = ndays + cdf |
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csi = ndaymonth(mi,li)*secondsperday - csi |
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nsecs = csi + csf |
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endif |
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endif |
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|
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C Convert to calendar format. |
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numdays(1) = ndays + nsecs/secondsperday |
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nsecs = mod(nsecs,secondsperday) |
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hhmmss = nsecs/secondsperminute |
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numdays(2) = hhmmss/minutesperhour*10000 + |
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& mod(hhmmss,minutesperhour)*100 + |
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& mod(nsecs,secondsperminute) |
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if (swap) then |
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numdays(1) = -numdays(1) |
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numdays(2) = -numdays(2) |
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endif |
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|
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else |
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C Dates are equal. |
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endif |
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|
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else |
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|
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ierr = 501 |
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call cal_PrintError( ierr, myThid ) |
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stop ' stopped in cal_TimePassed' |
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|
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endif |
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|
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RETURN |
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END |
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