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Up to [Power 6/32 Unix Tahoe 4.2BSD] / cci / usr / src / usr.bin / f77 / f77pass1 / tst

Power 6/32 Unix version 1.21

	parameter(pi=3.14159265)
	external xsin
	call graf(xsin,0.,2*pi,0.02,-1.,+1.)
	end

	subroutine graf(f,xmin,xmax,dx,ymin,ymax)
	parameter(nline=75)
	external f
	x = xmin
1	y = f(x)
	if(y.lt.ymin.or.y.gt.ymax)then
	print 10, ' '
	else
	j = (y-ymin)/(ymax-ymin)*(nline-1)
	print 10,(' ',i=1,j),'*'
	endif
	x = x+dx
	if(x.le.xmax)goto 1
	return
10	format(80a1)
	end

	function xsin(x)
	xsin = sin(x*12)*sin(x)
	return
	end

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