.TITLE DABS   ABSOLUTE VALUE FOR DOUBLE ARGUMENT  /ARG/
/ 
/ 
/                   FIRST PRINTING, FEBRUARY 1974
/ 
/ THE INFORMATION IN THIS DOCUMENT IS SUBJECT TO 
/ CHANGE WITHOUT NOTICE AND SHOULD NOT BE CONSTRUED
/ AS A COMMITMENT BY DIGITAL EQUIPMENT CORPORATION.
/ DIGITAL EQUIPMENT CORPORATION ASSUMES NO RESPON-
/ SIBILITY FOR ANY ERRORS THAT MAY APPEAR IN THIS
/ DOCUMENT.
/ 
/ THE SOFTWARE DESCRIBED IN THIS DOCUMENT IS FUR-
/ NISHED TO THE PURCHASER UNDER A LICENSE FOR USE ON
/ A SINGLE COMPUTER SYSTEM AND CAN BE COPIED (WITH
/ INCLUSION OF DIGITAL'S COPYRIGHT NOTICE) ONLY FOR 
/ USE IN SUCH SYSTEM, EXCEPT AS MAY OTHERWISE BE PRO-
/ VIDED IN WRITING BY DIGITAL.
/ 
/ DIGITAL EQUIPMENT CORPORATION ASSUMES NO RESPONSIBILITY
/ FOR THE USE OR RELIABILITY OF ITS SOFTWARE ON EQUIP-
/ MENT THAT IS NOT SUPPLIED BY DIGITAL.
/ 
/ COPYRIGHT (C) 1974, BY DIGITAL EQUIPMENT CORPORATION
/ 
/ 
        .EJECT
/COPYRIGHT 1970,1971, DIGITAL EQUIPMENT CORP., MAYNARD, MASS.
/EDIT 1  1-25-71
/FOR HARDWARE FLOATING POINT PROCESSOR (FPP), DEFINE %FPP,
       .GLOBL DABS,.DA,
	.IFUND %FPP
	.GLOBL .AO,.AB
	.ENDC
	.IFUND %FPP
	.DEFIN DLD%,A
	JMS* A			/DOUBLE LOAD (.AO)
	.ENDM
	.ENDC
	.IFDEF %FPP
DLD=713150
	.DEFIN DLD%
	DLD
	.ENDM
	.ENDC
/             CALLING SEQUENCE
/      JMS*   (DABS)          SUBR CALL
/      JMP    .+2             SUBR RETURN
/      CAL/XCTADDR            ADDR OF ARGUMENT (XCT IF INDIRECT)
	.IFDEF %FPP
FAB=713271
	.ENDC
/
DABS   CAL    0              /ENTRY-EXIT
       JMS*   .DA            /GET ARGUMENT (.DA)
       JMP    DABS02
DABS01 CAL    0              /ARGUMENT
DABS02 DLD%   .AO            /LOAD DOUBLE (.AO)
       .DSA   DABS01+400000  / (A9G)
	.IFDEF %FPP
	FAB			/MAKE FPP AC POS.
	0			/NOT USED
	.ENDC
	.IFUND %FPP
       LAC*   .AB            /GET SIGN WORD (.AB)
       AND    DABS06         /MAKE POSITIVE
       DAC*   .AB            /RESTORE (.AB)
	.ENDC
       JMP*   DABS           /EXIT
DABS06        377777
       .END