q4deri2.F

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!||====================================================================
!||    q4deri2       ../starter/source/elements/solid_2d/quad4/q4deri2.F
!||--- called by ------------------------------------------------------
!||    q4init2       ../starter/source/elements/solid_2d/quad4/q4init2.F
!||--- calls      -----------------------------------------------------
!||    ancmsg        ../starter/source/output/message/message.F
!||--- uses       -----------------------------------------------------
!||    message_mod   ../starter/share/message_module/message_mod.F
!||====================================================================
      SUBROUTINE q4deri2(VOL,KSI,ETA,WI,
     2             Y12,Y34,Y13,Y24,Y14,Y23,
     3             Z12,Z34,Z13,Z24,Z14,Z23,
     4             Y1,Y2,Y3,Y4,YAVG,IHBE, NGL)
      USE message_mod
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   G l o b a l   P a r a m e t e r s
C-----------------------------------------------
#include      "mvsiz_p.inc"
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "vect01_c.inc"
#include      "com01_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER IHBE, NGL(*)
      my_real
     +   VOL(*),KSI,ETA,WI,
     +   y12(*),y34(*),y13(*),y24(*),y14(*),y23(*),
     +   z12(*),z34(*),z13(*),z24(*),z14(*),z23(*),
     +   y1(*),y2(*),y3(*),y4(*),yavg(*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I
      my_real
     +    DET(MVSIZ)
      my_real
     +    qn1,qn2,qn3,qn4,yavg1
C-----------------------------------------------
C   S o u r c e  L i n e s
C-----------------------------------------------
      DO i=lft,llt
C       8.*|J|
        det(i) = (y34(i)*z12(i)-y12(i)*z34(i))*ksi +
     +           (y23(i)*z14(i)-y14(i)*z23(i))*eta +
     +           y13(i)*z24(i)-y24(i)*z13(i)
C       W*|J|
        vol(i) = one_over_8*det(i)*wi
      ENDDO
C
      IF(n2d==1) THEN
        IF(ihbe==17) THEN
          DO i=lft,llt
            vol(i) = yavg(i)*vol(i)
          ENDDO
c        ELSE
c          QN1 = (ONE - ETA)*(ONE - KSI)
c          QN2 = (ONE - ETA)*(KSI + ONE)
c          QN3 = (ETA + ONE)*(KSI + ONE)
c          QN4 = (ETA + ONE)*(ONE - KSI)
c          DO I=LFT,LLT
c            YAVG1 = FOURTH*(QN1*Y1(I)+QN2*Y2(I)+QN3*Y3(I)+QN4*Y4(I))
c            VOL(I) = YAVG1*VOL(I)
c          ENDDO
        ENDIF
      ENDIF
C
      DO i=lft,llt
        IF(det(i)<=zero) THEN
C         WRITE(IOUT,1000) NGL(I)
C         CALL ARRET(2)
          CALL ancmsg(msgid=228,
     .                msgtype=msgerror,
     .                anmode=aninfo,
     .                i1=ngl(i))
        ENDIF
      ENDDO
C
      RETURN
      END