i11gmx3.F

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C
C  119      SUBROUTINE I11GMX3(X,IRECT,I,GAPMAX)
!||====================================================================
!||    i11gmx3    ../starter/source/interfaces/inter3d1/i11gmx3.F
!||--- called by ------------------------------------------------------
!||    i11sti3    ../starter/source/interfaces/inter3d1/i11sti3.F
!||    i20sti3e   ../starter/source/interfaces/inter3d1/i20sti3.f
!||====================================================================
      SUBROUTINE i11gmx3(X,IRECT,I,GAPMAX,XL2)
C
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER I
C     REAL
      my_real
     .   gapmax
      INTEGER IRECT(2,*)
C     REAL
      my_real
     .   x(3,*),xl2
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER JPERM(4), N1, N2
C
      DATA jperm/2,3,4,1/
C-----------------------------------------------------------------
C     MINIMUM LENGTH OF SEGMENT EDGES (CALCULATION OF MAX GAP)
C-----------------------------------------------------------------
      n1=irect(1,i)
      n2=irect(2,i)
      xl2=(x(1,n1)-x(1,n2))**2
     .   +(x(2,n1)-x(2,n2))**2
     .   +(x(3,n1)-x(3,n2))**2
      IF(xl2>zero)gapmax= min(gapmax,xl2)
C
      RETURN
      END