C  Copyright (c) 2003-2010 University of Florida
C
C  This program is free software; you can redistribute it and/or modify
C  it under the terms of the GNU General Public License as published by
C  the Free Software Foundation; either version 2 of the License, or
C  (at your option) any later version.

C  This program is distributed in the hope that it will be useful,
C  but WITHOUT ANY WARRANTY; without even the implied warranty of
C  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
C  GNU General Public License for more details.

C  The GNU General Public License is included in this distribution
C  in the file COPYRIGHT.

C RETURNS THE FIRST POSITION OF AN INTEGER IN AN INTEGER VECTOR V.

      INTEGER FUNCTION CHKINT(V,LEN,INT)
      IMPLICIT INTEGER(A-Z)
      DIMENSION V(LEN)
      I = 1
      CHKINT = 0
      DO WHILE ((CHKINT.EQ.0).AND.(I.LE.LEN))
         IF (V(I).EQ.INT) CHKINT = I
         I = I + 1
      END DO
      RETURN
      END
