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C $Header: /usr/local/gcmpack/MITgcm/pkg/cal/cal_convdate.F,v 1.2 2003/09/23 04:34:24 dimitri Exp $ |
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|
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#include "CAL_CPPOPTIONS.h" |
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|
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subroutine cal_ConvDate( |
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I date, |
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O yy, mm, dd, ss, |
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O lp, wd, |
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I mythid |
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& ) |
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|
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c ================================================================== |
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c SUBROUTINE cal_ConvDate |
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c ================================================================== |
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c |
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c o Decompose the first part of a date array. |
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c |
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c started: Christian Eckert eckert@mit.edu 30-Jun-1999 |
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c |
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c changed: Christian Eckert eckert@mit.edu 29-Dec-1999 |
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c |
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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 |
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c Christian Eckert eckert@mit.edu 03-Feb-2000 |
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c |
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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 21-Sep-2003: fixed check_sign logic to work with |
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c negative intervals (menemenlis@jpl.nasa.gov) |
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c |
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c ================================================================== |
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c SUBROUTINE cal_ConvDate |
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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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|
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#include "cal.h" |
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|
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c == routine arguments == |
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|
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integer date(4) |
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integer mythid |
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|
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c == local variables == |
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|
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integer yy |
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integer mm |
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integer dd |
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integer ss |
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integer lp |
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integer wd |
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integer fac |
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integer date_1 |
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integer date_2 |
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integer ierr |
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integer check_sign |
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|
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c == end of interface == |
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|
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fac = 1 |
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|
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c Check the sign of the date. |
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|
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check_sign = 1 |
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if ( ( (date(1).lt.0) .and. date(2).gt.0 ) .or. |
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& ( (date(1).gt.0) .and. date(2).lt.0 ) ) |
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& check_sign = -1 |
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|
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if ( check_sign .ge. 0 ) then |
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if (date(1) .eq. 0) then |
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date_1 = date(1) |
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if (date(2) .lt. 0) then |
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date_2 = -date(2) |
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fac = -1 |
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else |
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date_2 = date(2) |
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fac = 1 |
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endif |
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else if (date(1) .lt. 0) then |
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date_1 = -date(1) |
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date_2 = -date(2) |
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fac = -1 |
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else |
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date_1 = date(1) |
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date_2 = date(2) |
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fac = 1 |
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endif |
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else |
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|
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ierr = 901 |
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call cal_PrintError( ierr, mythid ) |
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stop ' stopped in cal_ConvDate.' |
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|
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endif |
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|
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c Decompose the entries. |
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if (date(4) .ne. -1) then |
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yy = date_1/10000 |
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mm = mod(date_1/100,100) |
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dd = mod(date_1,100) |
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else |
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yy = 0 |
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mm = 0 |
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dd = date_1 |
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endif |
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ss = mod(date_2,100) + |
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& mod(date_2/100,100)*secondsperminute + |
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& date_2/10000*secondsperhour |
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|
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c Include the sign. |
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yy = fac*yy |
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mm = fac*mm |
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dd = fac*dd |
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ss = fac*ss |
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|
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lp = date(3) |
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wd = date(4) |
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|
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return |
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end |
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