C
C	Expression Tests:
C	A number of test cases for diagnosing
C	problems with order of operations and
C	constant folding.
C
C	For convinience, these always print out the
C	computed value followed by the expected value.
C

2	print -2+4,          2
3	print 1+2x3,         7
4	print (1+2)x3,       9
5	print -(1+2)x3,     -9
6	print mg(1+1,0),     0
7	print (1+mg(2,2))x2, 2