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*DECK DELTA
SUBROUTINE DELTA(NENTRY,HENTRY,IENTRY,JENTRY,KENTRY)
*
*-----------------------------------------------------------------------
*
*Purpose:
* calculation of direct or adjoint source components for a fixed source
* eigenvalue problem.
*
*Copyright:
* Copyright (C) 2002 Ecole Polytechnique de Montreal
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version
*
*Author(s): A. Hebert
*
*Parameters: input/output
* NENTRY number of LCM objects or files used by the operator.
* HENTRY name of each LCM object or file:
* HENTRY(1): create or modification type(L_SOURCE) (GPT source)
* HENTRY(2): read-only type(L_FLUX) => unperturbed solution
* HENTRY(3): read-only type(L_SYSTEM) => unperturbed matrices
* HENTRY(4): read-only type(L_SYSTEM) => perturbed matrices
* HENTRY(5): read-only type(L_TRACK) => tracking.
* IENTRY type of each LCM object or file:
* =1 LCM memory object; =2 XSM file; =3 sequential binary file;
* =4 sequential ascii file.
* JENTRY access of each LCM object or file:
* =0 the LCM object or file is created;
* =1 the LCM object or file is open for modifications;
* =2 the LCM object or file is open in read-only mode.
* KENTRY LCM object address or file unit number.
*
*Comments:
* The DELTA: calling specifications are:
* GPT := DELTA: [ GPT ] FLUX0 SYST0 DSYST TRACK :: (delta\_data) ;
* where
* GPT : name of the \emph{lcm} object (type L\_GPT) containing the fixed
* source. If GPT appears on the RHS, this information is used to initialize
* the state vector.
* FLUX0 : name of the \emph{lcm} object (type L\_FLUX) containing the
* unperturbed flux.
* SYST0 : name of the \emph{lcm} object (type L\_SYSTEM) containing the
* unperturbed system matrices.
* DSYST : name of the \emph{lcm} object (type L\_SYSTEM) containing a
* perturbation to the system matrices.
* TRACK : name of the \emph{lcm} object (type L\_TRACK) containing the
* \emph{tracking}.
* delta\_data}] : structure containing the data to module DELTA:}
*
*-----------------------------------------------------------------------
*
USE GANLIB
*----
* SUBROUTINE ARGUMENTS
*----
INTEGER NENTRY,IENTRY(NENTRY),JENTRY(NENTRY)
CHARACTER HENTRY(NENTRY)*12
TYPE(C_PTR) KENTRY(NENTRY)
*----
* LOCAL VARIABLES
*----
PARAMETER (NSTATE=40)
CHARACTER TEXT12*12,HSIGN*12,CMODUL*12
LOGICAL REC
INTEGER ISTATE(NSTATE)
TYPE(C_PTR) IPGPT,IPFLU0,IPSYS0,IPSYSP,IPTRK
*----
* PARAMETER VALIDATION.
*----
IF(NENTRY.LE.4) CALL XABORT('DELTA: FIVE PARAMETERS EXPECTED.')
IF((IENTRY(1).NE.1).AND.(IENTRY(1).NE.2)) CALL XABORT('DELTA: LC'
1 //'M OBJECT EXPECTED AT LHS.')
IF((JENTRY(1).NE.0).AND.(JENTRY(1).NE.1)) CALL XABORT('DELTA: EN'
1 //'TRY IN CREATE OR MODIFICATION MODE EXPECTED.')
IF((JENTRY(2).NE.2).OR.((IENTRY(2).NE.1).AND.(IENTRY(2).NE.2)))
1 CALL XABORT('DELTA: LCM OBJECT IN READ-ONLY MODE EXPECTED AT FI'
2 //'RST RHS.')
IF((JENTRY(3).NE.2).OR.((IENTRY(3).NE.1).AND.(IENTRY(3).NE.2)))
1 CALL XABORT('DELTA: LCM OBJECT IN READ-ONLY MODE EXPECTED AT SE'
2 //'COND RHS.')
IF((JENTRY(4).NE.2).OR.((IENTRY(4).NE.1).AND.(IENTRY(4).NE.2)))
1 CALL XABORT('DELTA: LCM OBJECT IN READ-ONLY MODE EXPECTED AT TH'
2 //'IRD RHS.')
IF((JENTRY(5).NE.2).OR.((IENTRY(5).NE.1).AND.(IENTRY(5).NE.2)))
1 CALL XABORT('DELTA: LCM OBJECT IN READ-ONLY MODE EXPECTED AT FO'
2 //'URTH RHS.')
REC=(JENTRY(1).EQ.1)
IF(REC) THEN
CALL LCMGTC(KENTRY(1),'SIGNATURE',12,HSIGN)
IF(HSIGN.NE.'L_SOURCE') THEN
TEXT12=HENTRY(1)
CALL XABORT('DELTA: SIGNATURE OF '//TEXT12//' IS '//HSIGN//
1 '. L_SOURCE EXPECTED.')
ENDIF
ELSE
HSIGN='L_SOURCE'
CALL LCMPTC(KENTRY(1),'SIGNATURE',12,HSIGN)
ENDIF
CALL LCMGTC(KENTRY(2),'SIGNATURE',12,HSIGN)
IF(HSIGN.NE.'L_FLUX') THEN
TEXT12=HENTRY(2)
CALL XABORT('DELTA: SIGNATURE OF '//TEXT12//' IS '//HSIGN//
1 '. L_FLUX EXPECTED.')
ENDIF
CALL LCMGTC(KENTRY(3),'SIGNATURE',12,HSIGN)
IF(HSIGN.NE.'L_SYSTEM') THEN
TEXT12=HENTRY(3)
CALL XABORT('DELTA: SIGNATURE OF '//TEXT12//' IS '//HSIGN//
1 '. L_SYSTEM EXPECTED.')
ENDIF
CALL LCMGTC(KENTRY(4),'SIGNATURE',12,HSIGN)
IF(HSIGN.NE.'L_SYSTEM') THEN
TEXT12=HENTRY(4)
CALL XABORT('DELTA: SIGNATURE OF '//TEXT12//' IS '//HSIGN//
1 '. L_SYSTEM EXPECTED.')
ENDIF
CALL LCMGTC(KENTRY(5),'SIGNATURE',12,HSIGN)
IF(HSIGN.NE.'L_TRACK') THEN
TEXT12=HENTRY(5)
CALL XABORT('DELTA: SIGNATURE OF '//TEXT12//' IS '//HSIGN//
1 '. L_TRACK EXPECTED.')
ENDIF
CALL LCMGTC(KENTRY(2),'LINK.SYSTEM',12,TEXT12)
IF(TEXT12.NE.HENTRY(3)) CALL XABORT('DELTA: OBJECT '//HENTRY(3)//
1 ' IS NOT AN UNPERTURBED SYSTEM OBJECT.')
CALL LCMGTC(KENTRY(2),'LINK.TRACK',12,TEXT12)
IF(TEXT12.NE.HENTRY(5)) CALL XABORT('DELTA: OBJECT '//HENTRY(3)//
1 ' IS NOT A TRACKING OBJECT.')
TEXT12=HENTRY(2)
CALL LCMPTC(KENTRY(1),'LINK.FLUX',12,TEXT12)
TEXT12=HENTRY(3)
CALL LCMPTC(KENTRY(1),'LINK.SYSTEM',12,TEXT12)
TEXT12=HENTRY(4)
CALL LCMPTC(KENTRY(1),'LINK.TRACK',12,TEXT12)
IPGPT=KENTRY(1)
IPFLU0=KENTRY(2)
IPSYS0=KENTRY(3)
IPSYSP=KENTRY(4)
IPTRK=KENTRY(5)
*----
* RECOVER GENERAL TRACKING INFORMATION.
*----
CALL LCMGET(IPTRK,'STATE-VECTOR',ISTATE)
NUN=ISTATE(2)
CALL LCMGTC(IPTRK,'TRACK-TYPE',12,CMODUL)
IF(CMODUL.NE.'TRIVAC') CALL XABORT('DELTA: TRIVAC TRACKING EXPEC'
1 //'TED.')
CALL LCMGET(IPSYS0,'STATE-VECTOR',ISTATE)
NGRP=ISTATE(1)
LL4=ISTATE(2)
CALL LCMGET(IPSYSP,'STATE-VECTOR',ISTATE)
IF(ISTATE(1).NE.NGRP) CALL XABORT('DELTA: INVALID NGRP.')
IF(ISTATE(2).NE.LL4) CALL XABORT('DELTA: INVALID LL4.')
NSTEP=ISTATE(6)
*----
* COMPUTE THE GPT SOLUTION.
*----
CALL DELDRV(IPTRK,IPSYS0,IPSYSP,IPFLU0,IPGPT,NUN,NGRP,NSTEP)
*----
* RELEASE GENERAL TRACKING INFORMATION.
*----
IF(JENTRY(1).EQ.0) THEN
CALL LCMPTC(IPGPT,'TRACK-TYPE',12,CMODUL)
ISTATE(:NSTATE)=0
ISTATE(1)=NGRP
ISTATE(2)=NUN
CALL LCMLEN(IPGPT,'DSOUR',ILENG,ITYLCM)
IF(ILENG.NE.0) ISTATE(3)=ILENG
CALL LCMLEN(IPGPT,'ASOUR',ILENG,ITYLCM)
IF(ILENG.NE.0) ISTATE(4)=ILENG
CALL LCMPUT(IPGPT,'STATE-VECTOR',NSTATE,1,ISTATE)
ENDIF
RETURN
END
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