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 Illegal division by zero at lib/Test/C2FIT/eg/ArithmeticFixture.pm line 56. | 
| 1 | 2 | 3 | -1 | 2 | 0.5 expected 0 actual | 
| 1 | -1 | 0 | 2 | -1 | -1 | 
| 10000 | 10000 | 20000 | 0 | 100000000 | 1 | 
| 100000 | 100000 | 200000 | 0 | 10000000000 | 1 | 
| 1000000 | 1000000 | 2000000 | 0 | 1000000000000 | 1 | 
| eg.ArithmeticColumnFixture | |||||
| x | y | plus() | times() | divide() | floating() | 
| 2 | 3 | 5 | 6 | 0 | 0.6666667 | 
| 0 | 0 | 0 | 0 | error | error | 
| 0 | 0 | 0 | 0 | error | error | 
| 200 | 300 | 500 | 60000 | 0 | 0.6666667 | 
| 2 | 3 | 10 expected 5 actual | 10 expected 6 actual | 10 expected 0 actual | |
| 200 | 3 | 5 expected 203 actual | 6 expected 600 actual | 0 expected 66 actual | 0.6666667 expected 66.6666666666667 actual | 
| 2 | -3 | -1 | -6 | -0 | -0.6666667 | 
| fit.Summary | |
| counts | 40 right, 8 wrong, 0 ignores, 1 exceptions | 
| input file | input/arithmetic.html | 
| input update | Sat Apr 22 22:26:16 2006 | 
| output file | output/arithmetic.html | 
| run date | Wed May 3 18:11:04 2006 | 
| run elapsed time | 0 wallclock secs ( 0.02 usr + 0.01 sys = 0.03 CPU) | 
Document prepaired by Ward Cunningham
First Version July 11, 2002
Last Update August 17, 2002