nintrn.F

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!||====================================================================
!||    nintrn    ../engine/source/fluid/nintrn.F
!||--- called by ------------------------------------------------------
!||    lecflsw   ../engine/source/fluid/lecflsw.F
!||====================================================================
      INTEGER FUNCTION nintrn (IEXT,NTN,M,N)
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 iext, m, n
      INTEGER ntn(m,n)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER i
C-----------------------------------------------
      DO 100 i=1,n
      IF(ntn(m,i)==iext)THEN
       nintrn=i
       RETURN
      ENDIF
 100  CONTINUE
       nintrn=0
      RETURN
      END