On 15.4.2005, at 00:55, Mel Bohince wrote: > <1.6> expected but was > <1.6>. Floating point accuracy, the bane of mankind. 1.0 + 0.2 + 0.2 + 0.2 - 1.6 => -2.22044604925031e-16 > Any clues to what I'm doing wrong? Is there a strategy to debug this > kind of thing? The debugger is not like I'm use too. Either do fixed-point decimals with integers and decimal point divisor (100 => 1.00*100; 100 + 20 + 20 + 20 - 160 => 0) or pick an error threshold and check that (a - b) < threshold (1.0 + 0.2 + 0.2 + 0.2 - 1.6) < 0.01 => true