Integer Arithmetic

The computer relies on arithmetic. Here we test a variety of arithmetic operations expressed as 32 bit two's complement binary numbers (Java's int).
 

eg.ArithmeticFixture
x	y	+	-	*	/
0	0	0	0	0	0
1	2	3	-1	2	0.5
1	-1	0	2	-1	-1
10000	10000	20000	0	100000000	1

Now we try something similar using automatic type conversion offered by ColumnFixtures (BFL1).

eg.ArithmeticColumnFixture
x	y	plus()	times()	divide()	floating()
2	3	5	6	0	0.666666666667
0	0	0	0	error	error
0	0	0	0
200	300	500	60000	0	0.666666666667
2	3	10	10	10	10
200	3	5	6	0	0.6666667
2	-3	-1	-6	0	-0.666666666667

fit.Summary

Document prepaired by Ward Cunningham
First Version July 11, 2002
Last Update August 17, 2002