ASMB,R,L
* 
*  **************************************************************** 
*  * (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
* 
* 
*     UTILITY ROUTINE CALL TO ATAN
* 
      NAM %TAN,7 24998-1X242 REV.2001 750701
      ENT %TAN
      EXT ATAN,ERR0 
%TAN  NOP           ENTRY/EXIT
      ISZ %TAN
      LDB %TAN,I
      DLD 1,I       LOAD PARAMETER INTO A AND B REG 
      JSB ATAN      CALL TO ATAN ROUTINE
      JSB ERR0           ERROR RETURN 
      ISZ %TAN
      JMP %TAN,I    RETURN
      END 
* 
* 
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