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C Copyright 1981-2007 ECMWF
C
C Licensed under the GNU Lesser General Public License which
C incorporates the terms and conditions of version 3 of the GNU
C General Public License.
C See LICENSE and gpl-3.0.txt for details.
C
SUBROUTINE JDEBUG( )
C
C---->
C**** JDEBUG
C
C PURPOSE
C _______
C
C This routine checks whether the debug flag is to be turned on.
C
C
C INTERFACE
C _________
C
C CALL JDEBUG( )
C
C Input parameters
C ________________
C
C None
C
C
C Output parameters
C ________________
C
C None
C
C
C Common block usage
C __________________
C
C JDCNDBG - set flag NDBG.
C JDCSPGP - set flag LFREECF, etc.
C
C
C Method
C ______
C
C On first call, checks whether or not the environment
C variable JDCNDBG exists.
C
C
C Externals
C _________
C
C GETENV - Checks value of an environment variable.
C INTLOGD - Switchs on/off the printing off interpoaltion messages
C
C
C Reference
C _________
C
C None
C
C
C Comments
C ________
C
C None.
C
C
C AUTHOR
C ______
C
C J.D.Chambers *ECMWF* Mar 1994
C
C
C MODIFICATIONS
C _____________
C
C J.D.Chambers *ECMWF* 5 Sep 1995
C Add call to intlogd.
C
C J.D.Chambers *ECMWF* 19 Mar 1998
C Add setting of LFREECF, etc
C
C----<
C
IMPLICIT NONE
#include "jparams.h"
#include "jparam2.h"
C
C Local variables
C
INTEGER NFIRST
DATA NFIRST/0/
CHARACTER*12 YFLAG
SAVE NFIRST
C
C _______________________________________________________
C
C* Section 1. Initialization.
C _______________________________________________________
C
100 CONTINUE
C
IF( NFIRST.EQ.0 ) THEN
NFIRST = 1
C
C Set debug level to control which messages are displayed
C
CALL GETENV('JDCNDBG', YFLAG)
IF( YFLAG(1:1).EQ.' ' ) NDBG = 0
IF( YFLAG(1:1).EQ.'1' ) NDBG = 1
IF( YFLAG(1:1).EQ.'2' ) NDBG = 2
IF( YFLAG(1:1).EQ.'3' ) NDBG = 3
IF( NDBG.EQ.0 ) THEN
CALL INTLOGD(0)
ELSE
CALL INTLOGD(1)
ENDIF
C
C Initialise the flags controlling handling of spectral -> grid
C interpolation coefficients memory unless already set by user
C
IF( NFREECF.NE.11041967 ) THEN
LFREECF = .FALSE.
NFREECF = 11041967
ENDIF
C
C Clear the sizes of the memory areas used for coefficients in
C spectral -> grid interpolations
C
NISIZE6 = 0
NISIZE7 = 0
C
ENDIF
C
C _______________________________________________________
C
C* Section 9. Return to calling routine.
C _______________________________________________________
C
900 CONTINUE
C
RETURN
END
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