Resolution differences between Matlab and Simulink

I have a Matlab script and a Simulink model that perform the same algorithm. When I compare my results using the isequal function, the answer is "0". At the plotting level, all looks perfect, but at about 6+ decimal places in, the numbers start to diverge from each other. Is there a way to determine if Matlab and Simulink are using the same data types so I can achieve the exact same answers?

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F