ASMB,R,L,C
* 
*  **************************************************************** 
*  * (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.        * 
*  **************************************************************** 
* 
*   NAME: PART OF MATH LIBRARY
*   SOURCE:  24998-18XXX  SEE NAM FOR LAST THREE DIGITS 
*   RELOC: PART OF 24998-12001
*   PGMR: BG & JTS
* 
      HED "DSIGN" DOUBLE PRECISION TRANSFER OF SIGN 
      NAM DSIGN,6 24998-1X143 REV.2001 750701 
      ENT DSIGN 
      EXT .ZRNT,.ENTP,.DFER,..DCM 
      SPC 2 
* 
*     CALLING SEQUENCE: ALL VARIABLES ARE DOUBLE
*     JSB DSIGN 
*     DEF *+4 
*     DEF Y 
*     DEF X1
*     DEF X2
      SPC 2 
TDB   NOP 
      DEC 6 
      NOP 
Y     NOP 
X1    NOP 
X2    NOP 
DSIGN NOP 
      JSB .ZRNT 
      DEF LIBX
      JSB .ENTP 
      DEF Y 
      STA TDB+2 
      JSB .DFER     Y=X1
      DEF Y,I 
      DEF X1,I
      LDA X2,I      GET HI-MAN OF X2
      SZA,RSS       EQUAL 0?
      JMP ZERO      YES 
      XOR Y,I       COMP IF SIGN'S ARE DIFFERENT
      SSA,RSS 
      JMP LIBX
      JSB ..DCM 
      DEF Y,I 
      JMP LIBX
ZERO  JSB .DFER     Y = 0.0 
      DEF Y,I 
      DEF DEX0
LIBX  JMP TDB+2,I 
      DEF TDB 
DEX0  DEX 0.0 
      END 
* 
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