For the following program, what is the value printed for "x1"?

	program test
	x1 = 1.0
	x2 = 2.0
	call calc (x2,x3)
	x1=2*x1
	print *, x1,x2,x3
	stop 
	end
	subroutine calc(y1,y2)
	x1=y1**2
	y2=x1+3
	return
	end

1.0

2.0

3.0

4.0

5.0


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