ASMB
      HED "DNG" - FORTRAN INTERFACE TO .DNG . 
      NAM DNG,7 92069-16272 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:    92069-18272
*     RELOC:     92069-16272
* 
* 
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* 
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* 
* 
      ENT DNG 
      EXT .DNG,.ENTR
* 
*     DNG PROVIDES A FORTRAN-CALLABLE DOUBLE INTEGER NEGATE.
* 
*     CALLING SEQUENCE: 
* 
*                   Y = DNG(X)
* 
*     WHERE X & Y 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 
DNGA  DEF *-* 
DNG   NOP 
      JSB .ENTR     COPY ADDRESSES. 
      DEF DNGA
      DLD DNGA,I    DO OPERATION. 
      JSB .DNG
      JMP DNG,I     EXIT. RESULT IS IN (A,B)
* 
      END 
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