ADAS Subroutine cxchrg

      SUBROUTINE CXCHRG( SYMBD , IZD   , SYMBR , IZR  , IDZ0  ,
     &                   IRZ0  , IRZ1  , IRZ2
     &                 )
C
C
C-----------------------------------------------------------------------
C
C  ****************** FORTRAN77 SUBROUTINE: CXCHRG *********************
C
C  PURPOSE:  SETS UP NUCLEAR CHARGE OF DONOR AND NULEAR, INITIAL AND
C            FINAL CHARGES OF RECEIVER.
C
C  CALLING PROGRAM: C6CHRG , ADAS308
C
C  INPUT : (C*2)  SYMBD   = DONOR ELEMENT SYMBOL.
C  INPUT : (I*4)  IZD     = DONOR ION CHARGE.
C  INPUT : (C*2)  SYMBR   = RECEIVER ELEMENT SYMBOL.
C  INPUT : (I*4)  IZR     = RECEIVER ION CHARGE.
C
C  OUTPUT: (I*4)  IDZ0    = DONOR NUCLEAR CHARGE.
C  OUTPUT: (I*4)  IRZ0    = RECEIVER NUCLEAR CHARGE.
C  OUTPUT: (I*4)  IRZ1    = RECEIVER ION INITIAL CHARGE.
C  OUTPUT: (I*4)  IRZ2    = RECEIVER ION FINAL CHARGE.
C
C
C ROUTINES:
C           ROUTINE     SOURCE      BRIEF DESCRIPTION
C           ------------------------------------------------------------
C           I4IEZ0      ADAS        RETURNS THE NUCLEAR CHARGE GIVEN THE
C                                   ELEMENT SYMBOL.
C           XXSTUC      ADAS        ENSURES ALL LETTERS IN STRING ARE
C                                   UPPER CASE.
C
C AUTHOR:  JONATHAN NASH (TESSELLA SUPPORT SERVICES PLC)
C          K1/0/81
C          JET EXT. 5183
C
C DATE:    11/11/93
C
C-----------------------------------------------------------------------
C
C-----------------------------------------------------------------------
      CHARACTER*2         SYMBD,       SYMBR
      INTEGER             IDZ0,        IRZ0,        IRZ1,        IRZ2
      INTEGER             IZD,         IZR