ASMB
      HED "DSB" - FORTRAN INTERFACE TO .DSB . 
      NAM DSB,7  92069-16267 REV.1912 790320
* 
* 
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* (C) COPYRIGHT HEWLETT-PACKARD COMPANY 1979. ALL RIGHTS RESERVED 
* NO PART OF THIS PROGRAM MAY BE PHOTOCOPIED, REPRODUCED, OR
* TRANSLATED TO ANOTHER PROGRAM LANGUAGE WITHOUT THE PRIOR
* WRITTEN CONSENT OF HEWLETT-PACKARD COMPANY. 
******************************************************************* 
* 
* 
*     SOURCE:    92069-18267
*     RELOC:     92069-16267
* 
* 
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* 
* 
* 
* 
* 
* 
      ENT DSB 
      EXT .DSB,.ENTR
* 
*     DSB PROVIDES A FORTRAN-CALLABLE DOUBLE INTEGER SUBTRACT.
* 
*     CALLING SEQUENCE: 
* 
*                   Z = DSB(X,Y)
* 
*     WHERE X,Y&Z ARE DECLARED REAL BUT CONTAIN DOUBLE
*     INTEGER VALUES. 
* 
*     OVERFLOW IS SET ONLY IF THE OPERATION OVERFLOWS, AND
*     IS TESTABLE BY THE ROUTINE "OFL". 
      SPC 3 
DSBA  DEF *-* 
DSBB  DEF *-* 
DSB   NOP 
      JSB .ENTR     COPY ADDRESSES. 
      DEF DSBA
      DLD DSBA,I    DO OPERATION. 
      JSB .DSB
      DEF DSBB,I
      JMP DSB,I     EXIT. RESULT IS IN (A,B)
* 
      END 
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