Initial commit from Polytechnique Montreal

1 files changed, 482 insertions, 0 deletions

diff --git a/Trivac/src/PNSZ3D.f b/Trivac/src/PNSZ3D.f
new file mode 100755
index 0000000..b191a18
--- /dev/null
+++ b/Trivac/src/PNSZ3D.f
@@ -0,0 +1,482 @@
+*DECK PNSZ3D
+      SUBROUTINE PNSZ3D(ITY,IPR,NREG,IELEM,ICOL,XX,YY,ZZ,MAT,VOL,NBMIX,
+     1 NLF,NVD,NAN,SIGT,SIGTI,L4,KN,QFR,LC,R,V,FUNKNO,SUNKNO)
+*
+*-----------------------------------------------------------------------
+*
+*Purpose:
+* Source calculation for a SPN approximation in TRIVAC, including
+* neighbour Legendre and out-of-group contributions.
+* Raviart-Thomas method in Cartesian geometry.
+*
+*Copyright:
+* Copyright (C) 2005 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
+* ITY     type of assembly:
+*         =0: leakage-removal matrix assembly; =1: cross section matrix
+*         assembly.
+* IPR     type of assembly:
+*         =0: contains system matrices;
+*         =1: contains derivative of these matrices;
+*         =2: contains first variation of these matrices;
+*         =3: contains addition of first vatiation to unperturbed
+*         system matrices.
+* NREG    total number of regions.
+* IELEM   degree of the Lagrangian finite elements: =1 (linear);
+*         =2 (parabolic); =3 (cubic); =4 (quartic).
+* ICOL    type of quadrature: =1 (analytical integration);
+*         =2 (Gauss-Lobatto); =3 (Gauss-Legendre).
+* XX      X-directed mesh spacings.
+* YY      Y-directed mesh spacings.
+* ZZ      Z-directed mesh spacings.
+* MAT     index-number of the mixture type assigned to each volume.
+* VOL     volumes.
+* NBMIX   number of mixtures.
+* NLF     number of Legendre orders for the flux (even number).
+* NVD     type of void boundary condition if NLF>0 and ICOL=3.
+* NAN     number of Legendre orders for the cross sections.
+* SIGT    macroscopic cross sections ordered by mixture.
+*         SIGT(:,NAN) generally contains the total cross section only.
+* SIGTI   inverse macroscopic cross sections ordered by mixture.
+*         SIGTI(:,NAN) generally contains the inverse total cross
+*         section only.
+* L4      order of the profiled system matrices.
+* KN      element-ordered unknown list.
+* QFR     element-ordered boundary conditions.
+* LC      order of the unit matrices.
+* R       unit Cartesian mass matrix.
+* V       unit nodal coupling matrix.
+* FUNKNO  initial fluxes.
+* SUNKNO  initial sources.
+*
+*Parameters: output
+* SUNKNO  modified sources.
+*
+*-----------------------------------------------------------------------
+*
+*----
+*  SUBROUTINE ARGUMENTS
+*----
+      INTEGER ITY,IPR,NREG,IELEM,ICOL,MAT(NREG),NBMIX,NLF,NVD,NAN,L4,
+     1 KN(NREG*(1+6*IELEM**2)),LC
+      REAL XX(NREG),YY(NREG),ZZ(NREG),VOL(NREG),SIGT(NBMIX,NAN),
+     1 SIGTI(NBMIX,NAN),QFR(6*NREG),R(LC,LC),V(LC,LC-1),
+     2 SUNKNO(L4*NLF/2),FUNKNO(L4*NLF/2)
+*----
+*  LOCAL VARIABLES
+*----
+      REAL QQ(5,5)
+*
+      IF(ICOL.EQ.3) THEN
+         IF(NVD.EQ.0) THEN
+            NZMAR=NLF+1
+         ELSE IF(NVD.EQ.1) THEN
+            NZMAR=NLF
+         ELSE IF(NVD.EQ.2) THEN
+            NZMAR=65
+         ENDIF
+      ELSE
+         NZMAR=65
+      ENDIF
+      DO 12 I0=1,IELEM
+      DO 11 J0=1,IELEM
+      QQ(I0,J0)=0.0
+      DO 10 K0=2,IELEM
+      QQ(I0,J0)=QQ(I0,J0)+V(K0,I0)*V(K0,J0)/R(K0,K0)
+   10 CONTINUE
+   11 CONTINUE
+   12 CONTINUE
+      DO 200 IL=0,NLF-1
+      IF((ITY.EQ.1).AND.(IL.GE.NAN)) GO TO 200
+      FACT=REAL(2*IL+1)
+*----
+*  COMPUTE THE SOURCE AT ORDER IL.
+*----
+      NUM1=0
+      NUM2=0
+      DO 190 K=1,NREG
+      IBM=MAT(K)
+      IF(IBM.EQ.0) GO TO 190
+      VOL0=VOL(K)
+      GARS=SIGT(IBM,MIN(IL+1,NAN))
+      IF(MOD(IL,2).EQ.0) THEN
+*        EVEN PARITY EQUATION
+         DO 55 K3=0,IELEM-1
+         DO 50 K2=0,IELEM-1
+         DO 20 K1=0,IELEM-1
+         JND1=(IL/2)*L4+KN(NUM1+1)+(K3*IELEM+K2)*IELEM+K1
+         SUNKNO(JND1)=SUNKNO(JND1)+FACT*VOL0*GARS*FUNKNO(JND1)
+   20    CONTINUE
+         IF(ITY.EQ.1) GO TO 50
+         IF((IPR.EQ.1).OR.(IPR.EQ.2)) GO TO 50
+*
+         KN1=KN(NUM1+2+K3*IELEM+K2)
+         KN2=KN(NUM1+2+IELEM**2+K3*IELEM+K2)
+         KN3=KN(NUM1+2+2*IELEM**2+K3*IELEM+K2)
+         KN4=KN(NUM1+2+3*IELEM**2+K3*IELEM+K2)
+         KN5=KN(NUM1+2+4*IELEM**2+K3*IELEM+K2)
+         KN6=KN(NUM1+2+5*IELEM**2+K3*IELEM+K2)
+         IND1=(IL/2)*L4+ABS(KN1)
+         IND2=(IL/2)*L4+ABS(KN2)
+         IND3=(IL/2)*L4+ABS(KN3)
+         IND4=(IL/2)*L4+ABS(KN4)
+         IND5=(IL/2)*L4+ABS(KN5)
+         IND6=(IL/2)*L4+ABS(KN6)
+         DO 30 K1=0,IELEM-1
+         JND1=(IL/2)*L4+KN(NUM1+1)+(K3*IELEM+K2)*IELEM+K1
+         IF(KN1.NE.0) THEN
+            SG=REAL(SIGN(1,KN1))
+            SUNKNO(JND1)=SUNKNO(JND1)+SG*REAL(IL+1)*VOL0*V(1,K1+1)*
+     1      FUNKNO(IND1)/XX(K)
+         ENDIF
+         IF(KN2.NE.0) THEN
+            SG=REAL(SIGN(1,KN2))
+            SUNKNO(JND1)=SUNKNO(JND1)+SG*REAL(IL+1)*VOL0*V(IELEM+1,K1+1)
+     1      *FUNKNO(IND2)/XX(K)
+         ENDIF
+         JND1=(IL/2)*L4+KN(NUM1+1)+(K3*IELEM+K1)*IELEM+K2
+         IF(KN3.NE.0) THEN
+            SG=REAL(SIGN(1,KN3))
+            SUNKNO(JND1)=SUNKNO(JND1)+SG*REAL(IL+1)*VOL0*V(1,K1+1)*
+     1      FUNKNO(IND3)/YY(K)
+         ENDIF
+         IF(KN4.NE.0) THEN
+            SG=REAL(SIGN(1,KN4))
+            SUNKNO(JND1)=SUNKNO(JND1)+SG*REAL(IL+1)*VOL0*V(IELEM+1,K1+1)
+     1      *FUNKNO(IND4)/YY(K)
+         ENDIF
+         JND1=(IL/2)*L4+KN(NUM1+1)+(K1*IELEM+K3)*IELEM+K2
+         IF(KN5.NE.0) THEN
+            SG=REAL(SIGN(1,KN5))
+            SUNKNO(JND1)=SUNKNO(JND1)+SG*REAL(IL+1)*VOL0*V(1,K1+1)*
+     1      FUNKNO(IND5)/ZZ(K)
+         ENDIF
+         IF(KN6.NE.0) THEN
+            SG=REAL(SIGN(1,KN6))
+            SUNKNO(JND1)=SUNKNO(JND1)+SG*REAL(IL+1)*VOL0*V(IELEM+1,K1+1)
+     1      *FUNKNO(IND6)/ZZ(K)
+         ENDIF
+   30    CONTINUE
+         IF(IL.GE.2) THEN
+            KN1=KN(NUM1+2+K3*IELEM+K2)
+            KN2=KN(NUM1+2+IELEM**2+K3*IELEM+K2)
+            KN3=KN(NUM1+2+2*IELEM**2+K3*IELEM+K2)
+            KN4=KN(NUM1+2+3*IELEM**2+K3*IELEM+K2)
+            KN5=KN(NUM1+2+4*IELEM**2+K3*IELEM+K2)
+            KN6=KN(NUM1+2+5*IELEM**2+K3*IELEM+K2)
+            IND1=((IL-2)/2)*L4+ABS(KN1)
+            IND2=((IL-2)/2)*L4+ABS(KN2)
+            IND3=((IL-2)/2)*L4+ABS(KN3)
+            IND4=((IL-2)/2)*L4+ABS(KN4)
+            IND5=((IL-2)/2)*L4+ABS(KN5)
+            IND6=((IL-2)/2)*L4+ABS(KN6)
+            DO 40 K1=0,IELEM-1
+            JND1=(IL/2)*L4+KN(NUM1+1)+(K3*IELEM+K2)*IELEM+K1
+            IF(KN1.NE.0) THEN
+               SG=REAL(SIGN(1,KN1))
+               SUNKNO(JND1)=SUNKNO(JND1)+SG*REAL(IL)*VOL0*V(1,K1+1)*
+     1         FUNKNO(IND1)/XX(K)
+            ENDIF
+            IF(KN2.NE.0) THEN
+               SG=REAL(SIGN(1,KN2))
+               SUNKNO(JND1)=SUNKNO(JND1)+SG*REAL(IL)*VOL0*
+     1         V(IELEM+1,K1+1)*FUNKNO(IND2)/XX(K)
+            ENDIF
+            JND1=(IL/2)*L4+KN(NUM1+1)+(K3*IELEM+K1)*IELEM+K2
+            IF(KN3.NE.0) THEN
+               SG=REAL(SIGN(1,KN3))
+               SUNKNO(JND1)=SUNKNO(JND1)+SG*REAL(IL)*VOL0*V(1,K1+1)*
+     1         FUNKNO(IND3)/YY(K)
+            ENDIF
+            IF(KN4.NE.0) THEN
+               SG=REAL(SIGN(1,KN4))
+               SUNKNO(JND1)=SUNKNO(JND1)+SG*REAL(IL)*VOL0*
+     1         V(IELEM+1,K1+1)*FUNKNO(IND4)/YY(K)
+            ENDIF
+            JND1=(IL/2)*L4+KN(NUM1+1)+(K1*IELEM+K3)*IELEM+K2
+            IF(KN5.NE.0) THEN
+               SG=REAL(SIGN(1,KN5))
+               SUNKNO(JND1)=SUNKNO(JND1)+SG*REAL(IL)*VOL0*V(1,K1+1)*
+     1         FUNKNO(IND5)/ZZ(K)
+            ENDIF
+            IF(KN6.NE.0) THEN
+               SG=REAL(SIGN(1,KN6))
+               SUNKNO(JND1)=SUNKNO(JND1)+SG*REAL(IL)*VOL0*
+     1         V(IELEM+1,K1+1)*FUNKNO(IND6)/ZZ(K)
+            ENDIF
+   40       CONTINUE
+         ENDIF
+   50    CONTINUE
+   55    CONTINUE
+      ELSE IF(MOD(IL,2).EQ.1) THEN
+         GARSI=SIGTI(IBM,MIN(IL+1,NAN))
+         DO 185 K3=0,IELEM-1
+         DO 180 K2=0,IELEM-1
+*        PARTIAL INVERSION OF THE ODD PARITY EQUATION. MODIFICATION OF
+*        THE EVEN PARITY EQUATION.
+         IF(IELEM.GT.1) THEN
+            DO 60 K1=0,IELEM-1
+            IF(QQ(K1+1,K1+1).EQ.0.0) GO TO 60
+            JND1=(IL/2)*L4+KN(NUM1+1)+(K3*IELEM+K2)*IELEM+K1
+            SUNKNO(JND1)=SUNKNO(JND1)+(REAL(IL)**2)*VOL0*QQ(K1+1,K1+1)*
+     1      GARSI*FUNKNO(JND1)/(FACT*XX(K)*XX(K))
+*
+            JND1=(IL/2)*L4+KN(NUM1+1)+(K3*IELEM+K1)*IELEM+K2
+            SUNKNO(JND1)=SUNKNO(JND1)+(REAL(IL)**2)*VOL0*
+     1      QQ(K1+1,K1+1)*GARSI*FUNKNO(JND1)/(FACT*YY(K)*YY(K))
+*
+            JND1=(IL/2)*L4+KN(NUM1+1)+(K1*IELEM+K3)*IELEM+K2
+            SUNKNO(JND1)=SUNKNO(JND1)+(REAL(IL)**2)*VOL0*
+     1      QQ(K1+1,K1+1)*GARSI*FUNKNO(JND1)/(FACT*ZZ(K)*ZZ(K))
+            IF(IL.LE.NLF-3) THEN
+               JND1=((IL+2)/2)*L4+KN(NUM1+1)+(K3*IELEM+K2)*IELEM+K1
+               KND1=(IL/2)*L4+KN(NUM1+1)+(K3*IELEM+K2)*IELEM+K1
+               SUNKNO(JND1)=SUNKNO(JND1)+(REAL(IL)*REAL(IL+1))*VOL0*
+     1         QQ(K1+1,K1+1)*GARSI*FUNKNO(KND1)/(FACT*XX(K)*XX(K))
+               JND1=(IL/2)*L4+KN(NUM1+1)+(K3*IELEM+K2)*IELEM+K1
+               KND1=((IL+2)/2)*L4+KN(NUM1+1)+(K3*IELEM+K2)*IELEM+K1
+               SUNKNO(JND1)=SUNKNO(JND1)+(REAL(IL)*REAL(IL+1))*VOL0*
+     1         QQ(K1+1,K1+1)*GARSI*FUNKNO(KND1)/(FACT*XX(K)*XX(K))
+               JND1=((IL+2)/2)*L4+KN(NUM1+1)+(K3*IELEM+K2)*IELEM+K1
+               SUNKNO(JND1)=SUNKNO(JND1)+(REAL(IL+1)*REAL(IL+1))*VOL0*
+     1         QQ(K1+1,K1+1)*GARSI*FUNKNO(JND1)/(FACT*XX(K)*XX(K))
+*
+               JND1=((IL+2)/2)*L4+KN(NUM1+1)+(K3*IELEM+K1)*IELEM+K2
+               KND1=(IL/2)*L4+KN(NUM1+1)+(K3*IELEM+K1)*IELEM+K2
+               SUNKNO(JND1)=SUNKNO(JND1)+(REAL(IL)*REAL(IL+1))*VOL0*
+     1         QQ(K1+1,K1+1)*GARSI*FUNKNO(KND1)/(FACT*YY(K)*YY(K))
+               JND1=(IL/2)*L4+KN(NUM1+1)+(K3*IELEM+K1)*IELEM+K2
+               KND1=((IL+2)/2)*L4+KN(NUM1+1)+(K3*IELEM+K1)*IELEM+K2
+               SUNKNO(JND1)=SUNKNO(JND1)+(REAL(IL)*REAL(IL+1))*VOL0*
+     1         QQ(K1+1,K1+1)*GARSI*FUNKNO(KND1)/(FACT*YY(K)*YY(K))
+               JND1=((IL+2)/2)*L4+KN(NUM1+1)+(K3*IELEM+K1)*IELEM+K2
+               SUNKNO(JND1)=SUNKNO(JND1)+(REAL(IL+1)*REAL(IL+1))*VOL0*
+     1         QQ(K1+1,K1+1)*GARSI*FUNKNO(JND1)/(FACT*YY(K)*YY(K))
+*
+               JND1=((IL+2)/2)*L4+KN(NUM1+1)+(K1*IELEM+K3)*IELEM+K2
+               KND1=(IL/2)*L4+KN(NUM1+1)+(K1*IELEM+K3)*IELEM+K2
+               SUNKNO(JND1)=SUNKNO(JND1)+(REAL(IL)*REAL(IL+1))*VOL0*
+     1         QQ(K1+1,K1+1)*GARSI*FUNKNO(KND1)/(FACT*ZZ(K)*ZZ(K))
+               JND1=(IL/2)*L4+KN(NUM1+1)+(K1*IELEM+K3)*IELEM+K2
+               KND1=((IL+2)/2)*L4+KN(NUM1+1)+(K1*IELEM+K3)*IELEM+K2
+               SUNKNO(JND1)=SUNKNO(JND1)+(REAL(IL)*REAL(IL+1))*VOL0*
+     1         QQ(K1+1,K1+1)*GARSI*FUNKNO(KND1)/(FACT*ZZ(K)*ZZ(K))
+               JND1=((IL+2)/2)*L4+KN(NUM1+1)+(K1*IELEM+K3)*IELEM+K2
+               SUNKNO(JND1)=SUNKNO(JND1)+(REAL(IL+1)*REAL(IL+1))*VOL0*
+     1         QQ(K1+1,K1+1)*GARSI*FUNKNO(JND1)/(FACT*ZZ(K)*ZZ(K))
+            ENDIF
+   60       CONTINUE
+         ENDIF
+*        ODD PARITY EQUATION.
+         DO 75 IC=1,2
+         IF(IC.EQ.1) IIC=1
+         IF(IC.EQ.2) IIC=IELEM+1
+         KN1=KN(NUM1+2+(IC-1)*IELEM**2+K3*IELEM+K2)
+         IND1=(IL/2)*L4+ABS(KN1)
+         S1=REAL(SIGN(1,KN1))
+         DO 70 JC=1,2
+         KN2=KN(NUM1+2+(JC-1)*IELEM**2+K3*IELEM+K2)
+         IF((KN1.NE.0).AND.(KN2.NE.0)) THEN
+            JJC=1
+            IF(JC.EQ.2) JJC=IELEM+1
+            IND2=(IL/2)*L4+ABS(KN2)
+            S2=REAL(SIGN(1,KN2))
+            SUNKNO(IND1)=SUNKNO(IND1)-S1*S2*FACT*R(IIC,JJC)*VOL0*GARS*
+     1      FUNKNO(IND2)
+         ENDIF
+   70    CONTINUE
+   75    CONTINUE
+         DO 85 IC=3,4
+         IF(IC.EQ.3) IIC=1
+         IF(IC.EQ.4) IIC=IELEM+1
+         KN1=KN(NUM1+2+(IC-1)*IELEM**2+K3*IELEM+K2)
+         IND1=(IL/2)*L4+ABS(KN1)
+         S1=REAL(SIGN(1,KN1))
+         DO 80 JC=3,4
+         KN2=KN(NUM1+2+(JC-1)*IELEM**2+K3*IELEM+K2)
+         IF((KN1.NE.0).AND.(KN2.NE.0)) THEN
+            JJC=1
+            IF(JC.EQ.4) JJC=IELEM+1
+            IND2=(IL/2)*L4+ABS(KN2)
+            S2=REAL(SIGN(1,KN2))
+            SUNKNO(IND1)=SUNKNO(IND1)-S1*S2*FACT*R(IIC,JJC)*VOL0*GARS*
+     1      FUNKNO(IND2)
+         ENDIF
+   80    CONTINUE
+   85    CONTINUE
+         DO 95 IC=5,6
+         IF(IC.EQ.5) IIC=1
+         IF(IC.EQ.6) IIC=IELEM+1
+         KN1=KN(NUM1+2+(IC-1)*IELEM**2+K3*IELEM+K2)
+         IND1=(IL/2)*L4+ABS(KN1)
+         S1=REAL(SIGN(1,KN1))
+         DO 90 JC=5,6
+         KN2=KN(NUM1+2+(JC-1)*IELEM**2+K3*IELEM+K2)
+         IF((KN1.NE.0).AND.(KN2.NE.0)) THEN
+            JJC=1
+            IF(JC.EQ.6) JJC=IELEM+1
+            IND2=(IL/2)*L4+ABS(KN2)
+            S2=REAL(SIGN(1,KN2))
+            SUNKNO(IND1)=SUNKNO(IND1)-S1*S2*FACT*R(IIC,JJC)*VOL0*GARS*
+     1      FUNKNO(IND2)
+         ENDIF
+   90    CONTINUE
+   95    CONTINUE
+         IF(ITY.EQ.1) GO TO 180
+*
+         KN1=KN(NUM1+2+K3*IELEM+K2)
+         KN2=KN(NUM1+2+IELEM**2+K3*IELEM+K2)
+         KN3=KN(NUM1+2+2*IELEM**2+K3*IELEM+K2)
+         KN4=KN(NUM1+2+3*IELEM**2+K3*IELEM+K2)
+         KN5=KN(NUM1+2+4*IELEM**2+K3*IELEM+K2)
+         KN6=KN(NUM1+2+5*IELEM**2+K3*IELEM+K2)
+         IND1=(IL/2)*L4+ABS(KN1)
+         IND2=(IL/2)*L4+ABS(KN2)
+         IND3=(IL/2)*L4+ABS(KN3)
+         IND4=(IL/2)*L4+ABS(KN4)
+         IND5=(IL/2)*L4+ABS(KN5)
+         IND6=(IL/2)*L4+ABS(KN6)
+         IF((QFR(NUM2+1).NE.0.0).AND.(KN1.NE.0)) THEN
+*           XINF SIDE.
+            DO 100 IL2=1,NLF-1,2
+            ZMARS=PNMAR2(NZMAR,IL2,IL)
+            INDL=(IL2/2)*L4+ABS(KN1)
+            SUNKNO(IND1)=SUNKNO(IND1)-0.5*FACT*QFR(NUM2+1)*ZMARS*
+     1      FUNKNO(INDL)
+  100       CONTINUE
+         ENDIF
+         IF((QFR(NUM2+2).NE.0.0).AND.(KN2.NE.0)) THEN
+*           XSUP SIDE.
+            DO 110 IL2=1,NLF-1,2
+            ZMARS=PNMAR2(NZMAR,IL2,IL)
+            INDL=(IL2/2)*L4+ABS(KN2)
+            SUNKNO(IND2)=SUNKNO(IND2)-0.5*FACT*QFR(NUM2+2)*ZMARS*
+     1      FUNKNO(INDL)
+  110       CONTINUE
+         ENDIF
+         IF((QFR(NUM2+3).NE.0.0).AND.(KN3.NE.0)) THEN
+*           YINF SIDE.
+            DO 120 IL2=1,NLF-1,2
+            ZMARS=PNMAR2(NZMAR,IL2,IL)
+            INDL=(IL2/2)*L4+ABS(KN3)
+            SUNKNO(IND3)=SUNKNO(IND3)-0.5*FACT*QFR(NUM2+3)*ZMARS*
+     1      FUNKNO(INDL)
+  120       CONTINUE
+         ENDIF
+         IF((QFR(NUM2+4).NE.0.0).AND.(KN4.NE.0)) THEN
+*           YSUP SIDE.
+            DO 130 IL2=1,NLF-1,2
+            ZMARS=PNMAR2(NZMAR,IL2,IL)
+            INDL=(IL2/2)*L4+ABS(KN4)
+            SUNKNO(IND4)=SUNKNO(IND4)-0.5*FACT*QFR(NUM2+4)*ZMARS*
+     1      FUNKNO(INDL)
+  130       CONTINUE
+         ENDIF
+         IF((QFR(NUM2+5).NE.0.0).AND.(KN5.NE.0)) THEN
+*           ZINF SIDE.
+            DO 140 IL2=1,NLF-1,2
+            ZMARS=PNMAR2(NZMAR,IL2,IL)
+            INDL=(IL2/2)*L4+ABS(KN5)
+            SUNKNO(IND5)=SUNKNO(IND5)-0.5*FACT*QFR(NUM2+5)*ZMARS*
+     1      FUNKNO(INDL)
+  140       CONTINUE
+         ENDIF
+         IF((QFR(NUM2+6).NE.0.0).AND.(KN6.NE.0)) THEN
+*           ZSUP SIDE.
+            DO 150 IL2=1,NLF-1,2
+            ZMARS=PNMAR2(NZMAR,IL2,IL)
+            INDL=(IL2/2)*L4+ABS(KN6)
+            SUNKNO(IND6)=SUNKNO(IND6)-0.5*FACT*QFR(NUM2+6)*ZMARS*
+     1      FUNKNO(INDL)
+  150       CONTINUE
+         ENDIF
+*
+         IF((IPR.EQ.1).OR.(IPR.EQ.2)) GO TO 180
+         DO 160 K1=0,IELEM-1
+         JND1=(IL/2)*L4+KN(NUM1+1)+(K3*IELEM+K2)*IELEM+K1
+         IF(KN1.NE.0) THEN
+            SG=REAL(SIGN(1,KN1))
+            SUNKNO(IND1)=SUNKNO(IND1)+SG*REAL(IL)*VOL0*V(1,K1+1)*
+     1      FUNKNO(JND1)/XX(K)
+         ENDIF
+         IF(KN2.NE.0) THEN
+            SG=REAL(SIGN(1,KN2))
+            SUNKNO(IND2)=SUNKNO(IND2)+SG*REAL(IL)*VOL0*V(IELEM+1,K1+1)*
+     1      FUNKNO(JND1)/XX(K)
+         ENDIF
+         JND1=(IL/2)*L4+KN(NUM1+1)+(K3*IELEM+K1)*IELEM+K2
+         IF(KN3.NE.0) THEN
+            SG=REAL(SIGN(1,KN3))
+            SUNKNO(IND3)=SUNKNO(IND3)+SG*REAL(IL)*VOL0*V(1,K1+1)*
+     1      FUNKNO(JND1)/YY(K)
+         ENDIF
+         IF(KN4.NE.0) THEN
+            SG=REAL(SIGN(1,KN4))
+            SUNKNO(IND4)=SUNKNO(IND4)+SG*REAL(IL)*VOL0*V(IELEM+1,K1+1)*
+     1      FUNKNO(JND1)/YY(K)
+         ENDIF
+         JND1=(IL/2)*L4+KN(NUM1+1)+(K1*IELEM+K3)*IELEM+K2
+         IF(KN5.NE.0) THEN
+            SG=REAL(SIGN(1,KN5))
+            SUNKNO(IND5)=SUNKNO(IND5)+SG*REAL(IL)*VOL0*V(1,K1+1)*
+     1      FUNKNO(JND1)/ZZ(K)
+         ENDIF
+         IF(KN6.NE.0) THEN
+            SG=REAL(SIGN(1,KN6))
+            SUNKNO(IND6)=SUNKNO(IND6)+SG*REAL(IL)*VOL0*V(IELEM+1,K1+1)*
+     1      FUNKNO(JND1)/ZZ(K)
+         ENDIF
+  160    CONTINUE
+         IF(IL.LE.NLF-3) THEN
+            DO 170 K1=0,IELEM-1
+            JND1=((IL+2)/2)*L4+KN(NUM1+1)+(K3*IELEM+K2)*IELEM+K1
+            IF(KN1.NE.0) THEN
+               SG=REAL(SIGN(1,KN1))
+               SUNKNO(IND1)=SUNKNO(IND1)+SG*REAL(IL+1)*VOL0*V(1,K1+1)*
+     1         FUNKNO(JND1)/XX(K)
+            ENDIF
+            IF(KN2.NE.0) THEN
+               SG=REAL(SIGN(1,KN2))
+               SUNKNO(IND2)=SUNKNO(IND2)+SG*REAL(IL+1)*VOL0*
+     1         V(IELEM+1,K1+1)*FUNKNO(JND1)/XX(K)
+            ENDIF
+            JND1=((IL+2)/2)*L4+KN(NUM1+1)+(K3*IELEM+K1)*IELEM+K2
+            IF(KN3.NE.0) THEN
+               SG=REAL(SIGN(1,KN3))
+               SUNKNO(IND3)=SUNKNO(IND3)+SG*REAL(IL+1)*VOL0*V(1,K1+1)*
+     1         FUNKNO(JND1)/YY(K)
+            ENDIF
+            IF(KN4.NE.0) THEN
+               SG=REAL(SIGN(1,KN4))
+               SUNKNO(IND4)=SUNKNO(IND4)+SG*REAL(IL+1)*VOL0*
+     1         V(IELEM+1,K1+1)*FUNKNO(JND1)/YY(K)
+            ENDIF
+            JND1=((IL+2)/2)*L4+KN(NUM1+1)+(K1*IELEM+K3)*IELEM+K2
+            IF(KN5.NE.0) THEN
+               SG=REAL(SIGN(1,KN5))
+               SUNKNO(IND5)=SUNKNO(IND5)+SG*REAL(IL+1)*VOL0*V(1,K1+1)*
+     1         FUNKNO(JND1)/ZZ(K)
+            ENDIF
+            IF(KN6.NE.0) THEN
+               SG=REAL(SIGN(1,KN6))
+               SUNKNO(IND6)=SUNKNO(IND6)+SG*REAL(IL+1)*VOL0*
+     1         V(IELEM+1,K1+1)*FUNKNO(JND1)/ZZ(K)
+            ENDIF
+  170       CONTINUE
+         ENDIF
+  180    CONTINUE
+  185    CONTINUE
+      ENDIF
+      NUM1=NUM1+1+6*IELEM**2
+      NUM2=NUM2+6
+  190 CONTINUE
+  200 CONTINUE
+      RETURN
+      END