*
* $Id: xinpro.F,v 1.1.1.1 1995/10/24 10:22:04 cernlib Exp $
*
* $Log: xinpro.F,v $
* Revision 1.1.1.1  1995/10/24 10:22:04  cernlib
* Geant
*
*
#include "geant321/pilot.h"
*CMZ :  3.21/02 29/03/94  15.41.46  by  S.Giani
*-- Author :
*$ CREATE XINPRO.FOR
*COPY XINPRO
*
*=== xinpro ===========================================================*
*
      FUNCTION XINPRO ( E, ZTAR, VCOUL )
 
#include "geant321/dblprc.inc"
#include "geant321/dimpar.inc"
#include "geant321/iounit.inc"
*
*----------------------------------------------------------------------*
*----------------------------------------------------------------------*
*
#include "geant321/isotop.inc"
#include "geant321/xsepar.inc"
      COMMON / FKNEGX / XSENEG
*
      IZ = NINT ( ZTAR )
      IF ( E .GT. 0.1D+00 ) THEN
         ATAR = 0.D+00
         DO 25 IS = ISONDX (1,IZ), ISONDX (2,IZ)
             ATAR = ATAR + ISOMNM (IS) * ABUISO (IS)
   25    CONTINUE
         EMEV = E * 1.D+03
         XINPRO = SITSAO ( EMEV, IZ, ATAR )
      ELSE
         ZZCOUL = 1.D+01 * VCOUL
         X  = 1.D+01 * E
         X2 = X * X
         XINPRO = AAPXSE (IZ) * ( X - ZZCOUL ) / X * ( 1.D+00
     &          + BBPXSE (IZ) * X + CCPXSE (IZ) * X2 + DDPXSE (IZ)
     &          * X * X2 + EEPXSE (IZ) * X2 * X2 + FFPXSE (IZ) * X2
     &          * X * X2 )
         IF ( XINPRO .LT. 0.D+00 ) THEN
            XSENEG = XINPRO
            XINPRO = 0.D+00
         END IF
      END IF
*=== End of function XINPRO ===========================================*
       RETURN
       END