ssort_n3.F

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!||====================================================================
!||    ssort_n3        ../engine/source/elements/solid/solide4/ssort_n3.F
!||--- called by ------------------------------------------------------
!||    sfor_n2stria2   ../engine/source/elements/solid/solide10/sfor_n2stria2.F
!||====================================================================
      SUBROUTINE ssort_n3(XI,      YI,     ZI ,    
     .                     X1,     X2,      X3,
     .                     Y1,     Y2,      Y3,
     .                     Z1,     Z2,      Z3,
     .                  MARGE,   STIF,    IFC1,    
     .                    NEL)
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   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER, INTENT (IN)  :: NEL
      INTEGER, DIMENSION(MVSIZ),INTENT (INOUT) :: IFC1
      my_real, DIMENSION(MVSIZ), INTENT (IN) :: MARGE,
     .                        XI,     YI,     ZI,STIF 
      DOUBLE PRECISION, DIMENSION(MVSIZ), INTENT (IN) ::
     .                        x1,     x2,      x3,
     .                        y1,     y2,      y3,
     .                        z1,     z2,      z3
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I
C                                                                     12
      my_real
     .   RX, RY, RZ, SX, SY, SZ,NX,NY,NZ,BBB,
     .   PENE(MVSIZ),NORM
C----------------------------
         DO i=1,nel
           IF (ifc1(i)>0) cycle
           rx =x2(i)-x1(i)
           ry =y2(i)-y1(i)
           rz =z2(i)-z1(i)
           sx =x3(i)-x1(i)
           sy =y3(i)-y1(i)
           sz =z3(i)-z1(i)
           nx =ry*sz - rz*sy
           ny =rz*sx - rx*sz
           nz =rx*sy - ry*sx
           norm=one/max(em20,sqrt(nx*nx+ny*ny+nz*nz))
           bbb = ((x3(i)-xi(i))*nx + (y3(i)-yi(i))*ny +
     .            (z3(i)-zi(i))*nz)*norm 
           pene(i) = abs(bbb)  
           IF (pene(i)<marge(i).AND.stif(i)>zero) ifc1(i)=2
         ENDDO
C       
      RETURN
      END