File: XYPLOW.RA of Tape: Sources/Fortran/s2
(Source file text) 


	SECT	XYPLOT
	JA	STNOW

#PLSTR,	JA	.
	JA	#XPLOT
	TEXT	+XYPLOT+
PLOTXR,	SETX	XRPLOT
	SETB	BPPLOT
BPPLOT,	FNOP
	0
	0
XRPLOT,	0
XR1,	0
XR2,	0
TERM2,	0
XR4,	0
XR5,	0
YPT,	F 0.
XPT,	F 0.
TERM1,	F 0.
ARG1,	F 0.
YDIFF,	F 0.
	ORG	BPPLOT+30
	FNOP
	JA	PLOTXR
	0
PLTRTN,	JA	.
MAJOR,	F 0.
MINOR,	F 0.
XOLD,	F 0.
YOLD,	F 0.
PENCM,	F 0.
INCR,	F .01
FACTC,	F 1.
XACT,	F 0.
YACT,	F 0.
XDIFF,	F 0.
P1,	F 1.
PF2,	F 2.
P3,	F 3.
P4,	F 4.
PF7,	F 7.
PT5,	F .5
PORS,	F 0.
ONCE,	F 0.
XCHRPT,	F 0.
YCHRPT,	F 0.
NUMENT,	F 0.
COSANG,	F 0.
SINANG,	F 0.
DEGRAD,	F 0.017453293
F200,	F 200.
XREAL,	F 0.
YREAL,	F 0.
CENTSY,	F 0.
NUMSYM,	F 0.
ANGADJ,	F 0.
	0
SYMSTR,	JA	.
	JA	SYMST
	0
	BASE 0
#XPLOT,	STARTD
	FLDA	30
	FSTA	PLTRTN
	FLDA	0
	SETX	XRPLOT
	SETB	BPPLOT
	BASE	BPPLOT
	LDX	1,1
	FSTA	ARG1
	JA	#PLSTR
STNOW,	JSA	#PLSTR
SYMENT,	FLDA%	ARG1,1
	FSTA	XPT
	FLDA%	ARG1,1+
	FSTA	YPT
	FLDA%	ARG1,1+
	FSTA	YDIFF
	STARTF
	FLDA%	XPT
	FDIV	INCR
	JSA	MAKINT
	FSTA	XACT
	FMUL	FACTC
	JSA	MAKINT
	FSTA	XPT
	FLDA%	YPT
	FDIV	INCR
	JSA	MAKINT
	FSTA	YACT
	FMUL	FACTC
	JSA	MAKINT
	FSTA	YPT
	FLDA%	YDIFF
	FSTA	PENCM
	JGE	MORPEN
	FNEG
MORPEN,	JSA	MAKINT
TRYAGN,	SETX	SETXR
	ATX	0
	XTA	0
	SETX	XRPLOT
	FSUB	P3
	JLE	ALEGAL
	FCLA
	JA	TRYAGN
ALEGAL,	TRAP4	SETUP
	FLDA	FACTC
	FMULM	XOLD
	FMULM	YOLD
	JA	REALPT
MAKINT,	JA	.
	FADD	PT5
	ALN	0
	FNORM
	JA	MAKINT

PRERL1,	FCLA
PREREL,	JA	.
REALPT,	FLDA	XPT
	FSUB	XOLD
	FSTA	XDIFF
	JGE	ABSDX
	FNEG
ABSDX,	FSTA	TERM1
	FLDA	YPT
	FSUB	YOLD
	FSTA	YDIFF
	JLE	DELXY
	FNEG
DELXY,	FADDM	TERM1
	FLDA	TERM1
	JGT	XMAJ
	FLDA	YDIFF
	FSTA	MAJOR
	FLDA	XDIFF
	FSTA	MINOR
	JA	KNOWOC
XMAJ,	FLDA	XDIFF
	FSTA	MAJOR
	FLDA	YDIFF
	FSTA	MINOR
KNOWOC,	LDX	2,1
	FLDA	XDIFF
	JLE	.+4
	ADDX	10,1
	FLDA	YDIFF
	JLE	.+4
	ADDX	4,1
	FLDA	TERM1
	JLE	.+4
	ADDX	2,1
	LDX	0,2
	FLDA	MAJOR
	JGT	POSMAJ
	JEQ	NOTHIN
	FNEG
	FSTA	MAJOR
POSMAJ,	JSA	MAKINT
	SETX	PDPXR
	ATX	1
	SETX	XRPLOT
	FLDA	MINOR
	JGT	POSMIN
	JEQ	ZROCAS
	FNEG
POSMIN,	FDIV	MAJOR
	ALN	2
ZROCAS,	FSTA	RATIO
	XTA	1
	SETX	PDPXR
	ATX	0
	SETX	XRPLOT
	TRAP4	NINPLT

NOTHIN,	FLDA	PORS
	JEQ	REGPLT
	JLT	SYMSET
	FCLA
	FSTA	XOLD
	FSTA	YOLD
	FSTA	PORS
	JA	SYMSTR
REGPLT,	FLDA	PENCM
	JLT	ZEROLD
	FLDA	XACT
	FSTA	XOLD
	FLDA	YACT
YS,	FSTA	YOLD
	JA	PLTRTN
SYMSET,	FLDA	XPT
	FSTA	XOLD
	FLDA	YPT
	FSTA	YOLD
	JA	PRERL1
ZEROLD,	FCLA
	FSTA	XOLD
	JA	YS
	ENTRY	SYMSTR
SYMST,	STARTD
	FLDA	SYMSTR
	FSTA	ARG1
	LDX	1,1
	STARTF
	FLDA	P1
	FSTA	PORS
	STARTD
	JA	SYMENT
	ENTRY	WHERE
WHERE,	JSA	#PLSTR
	FLDA%	ARG1,1
	FSTA	TERM1
	FLDA%	ARG1,1+
	FSTA	YDIFF
	FLDA%	ARG1,1+
	FSTA	ARG1
	STARTF
	FLDA	XOLD
	FMUL	INCR
	FSTA%	TERM1
	FLDA	YOLD
	FMUL	INCR
	FSTA%	YDIFF
	FLDA	FACTC
	FSTA%	ARG1
	JA	PLTRTN
	ENTRY	FACTOR
FACTOR,	JSA	#PLSTR
	FLDA%	ARG1,1
	FSTA	ARG1
	STARTF
	FLDA%	ARG1
	JGE	ABSFCT
	FNEG
ABSFCT,	FSTA	FACTC
	JA	PLTRTN
	ENTRY	PLOTS
PLOTS,	JSA	#PLSTR
	FLDA%	ARG1,1
	FSTA	XPT
	FLDA%	ARG1,1+
	FSTA	ARG1
	STARTF
	FLDA%	XPT
	FSTA	INCR
	FLDA	ONCE
	FCLA		/JNE	NOINT
	FCLA		/""
	TRAP4	INTST
NOINT,	FLDA	P1
	FSTA	FACTC
	FSTA	ONCE
	FCLA
	FSTA	PENCM
	FSTA	XOLD
	FSTA	YOLD
	FSTA	PORS
	JA	PLTRTN

	ENTRY	PLEXIT
PLEXIT,	JSA	#PLSTR
	STARTF
	TRAP4	DONECK
	JA	PLTRTN