.MCALL	.MODULE
.MODULE	JMOV,VERSION=03,COMMENT=<INT*4 MOVE/SYSLIB>,IDENT=NO,LIB=YES

; Copyright (c) 1998 by Mentec, Inc., Nashua, NH.
; All rights reserved
;
; This software is furnished under a license for use only on a
; single computer system and  may  be  copied  only  with  the
; inclusion of the above copyright notice.  This software,  or
; any other copies thereof, may not be provided  or  otherwise
; made available to any other person except for  use  on  such
; system and to one who agrees to these license  terms.  Title
; to  and  ownership of the software shall at all times remain
; in Mentec, Inc.
;
; The information in this document is subject to change without
; notice and should not be construed as a commitment by Digital
; Equipment Corporation, or Mentec, Inc.
;
; Digital and Mentec  assume  no  responsibility for the use or
; reliability of its software on equipment which is not supplied
; by Digital  or Mentec,  and listed  in the  Software  Product
; Description.
.SBTTL	JMOV - FORTRAN CALLABLE SUBROUTINE
;
; MAS

.PSECT	SYS$I

.GLOBL	$SYSLB

JMOV::	CLR	R0		;INITIALIZE FOR NORMAL EXIT
	TST	(R5)+		;SKIP COUNT ARG
	MOV	(R5)+,R4	;ADDR OF OPERAND 1
	MOV	(R5)+,R1	;ADDR OF OPERAND 2
	MOV	(R4)+,(R1)+	;MOVE LOW PART
	MOV	@R4,@R1		;MOVE HIGH PART
$SETR0::TST	@R1		;TEST HIGH PART
	BGT	10$		;BRANCH IF >0
	BLT	20$		;BRANCH IF <0
	TST	-(R1)		;CHECK LOW PART
	BEQ	30$		;RESULT IS 0, LEAVE R0 ALONE
10$:	TST	(R0)+		;ADD 2 TO R0
20$:	DEC	R0		;SUBTRACT 1 FROM R0
30$:	RETURN

.END