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FUNCTION IFBGET(LUNIT),4
C$$$ SUBPROGRAM DOCUMENTATION BLOCK
C
C SUBPROGRAM: IFBGET
C PRGMMR: WOOLLEN ORG: NP20 DATE: 1994-01-06
C
C ABSTRACT: THIS FUNCTION CHECKS TO SEE IF ANY UNREAD SUBSETS ARE IN
C AN INPUT BUFR MESSAGE PREVIOUSLY OPENED BY BUFR ARCHIVE LIBRARY
C SUBROUTINE OPENMG OR OPENMB.
C
C PROGRAM HISTORY LOG:
C 1994-01-06 J. WOOLLEN -- ORIGINAL AUTHOR
C 1998-07-08 J. WOOLLEN -- REPLACED CALL TO CRAY LIBRARY ROUTINE
C "ABORT" WITH CALL TO NEW INTERNAL BUFRLIB
C ROUTINE "BORT"
C 1999-11-18 J. WOOLLEN -- THE NUMBER OF BUFR FILES WHICH CAN BE
C OPENED AT ONE TIME INCREASED FROM 10 TO 32
C (NECESSARY IN ORDER TO PROCESS MULTIPLE
C BUFR FILES UNDER THE MPI)
C 2003-11-04 S. BENDER -- ADDED REMARKS/BUFRLIB ROUTINE
C INTERDEPENDENCIES
C 2003-11-04 D. KEYSER -- UNIFIED/PORTABLE FOR WRF; ADDED
C DOCUMENTATION (INCLUDING HISTORY); OUTPUTS
C MORE COMPLETE DIAGNOSTIC INFO WHEN ROUTINE
C TERMINATES ABNORMALLY
C
C USAGE: IFBGET (LUNIT)
C INPUT ARGUMENT LIST:
C LUNIT - INTEGER: FORTRAN LOGICAL UNIT NUMBER FOR BUFR FILE
C
C OUTPUT ARGUMENT LIST:
C IFBGET - INTEGER: RETURN CODE:
C 0 = there is at least one more subset in the
C message
C -1 = there are no more subsets in the message
C
C REMARKS:
C THIS ROUTINE CALLS: BORT STATUS
C THIS ROUTINE IS CALLED BY: None
C Normally called only by application
C programs.
C
C ATTRIBUTES:
C LANGUAGE: FORTRAN 77
C MACHINE: PORTABLE TO ALL PLATFORMS
C
C$$$
INCLUDE 'bufrlib.prm'
COMMON /MSGCWD/ NMSG(NFILES),NSUB(NFILES),MSUB(NFILES),
. INODE(NFILES),IDATE(NFILES)
C-----------------------------------------------------------------------
C-----------------------------------------------------------------------
C MAKE SURE A FILE/MESSAGE IS OPEN FOR INPUT
C ------------------------------------------
CALL STATUS
(LUNIT,LUN,IL,IM)
IF(IL.EQ.0) GOTO 900
IF(IL.GT.0) GOTO 901
IF(IM.EQ.0) GOTO 902
C SEE IF THERE IS ANOTHER SUBSET IN THE MESSAGE
C ---------------------------------------------
IF(NSUB(LUN).LT.MSUB(LUN)) THEN
IFBGET = 0
ELSE
IFBGET = -1
ENDIF
C EXITS
C -----
RETURN
900 CALL BORT('BUFRLIB: IFBGET - INPUT BUFR FILE IS CLOSED, IT '//
. 'MUST BE OPEN FOR INPUT')
901 CALL BORT('BUFRLIB: IFBGET - INPUT BUFR FILE IS OPEN FOR '//
. 'OUTPUT, IT MUST BE OPEN FOR INPUT')
902 CALL BORT('BUFRLIB: IFBGET - A MESSAGE MUST BE OPEN IN INPUT '//
. 'BUFR FILE, NONE ARE')
END