perm filename CIRCLE.F4[SAB,LCS] blob sn#353916 filedate 1978-05-07 generic text, type C, neo UTF8
COMMENT āŠ—   VALID 00002 PAGES
C REC  PAGE   DESCRIPTION
C00001 00001
C00002 00002	        SUBROUTINE CIRCLE(R)
C00003 ENDMK
CāŠ—;
        SUBROUTINE CIRCLE(R)
	N=IFIX(R*50.)+12
	X= R
	Y=0.0
	THETA=6.2831852/FLOAT(N)
	C= COS(THETA)
	S= SIN(THETA)
	CALL PLOT(R,0.0,3)
	DO 10 I= 1,N
	U=X*C-Y*S
	V=X*S+Y*C
	X=U
	Y=V
	CALL PLOT(X,Y,2)
 10	CONTINUE
	RETURN 
	END