Why does MATLAB only calculate to 4 significant digits?

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Doug Hull
Doug Hull 2011-1-18
I only see 4 significant figures:
>>2/3
ans =
0.6667

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Doug Hull
Doug Hull 2011-1-18
It doesn't. It uses full double-precision floating point numbers to calculate everything. By default it only prints a few decimal places to the screen. You can change this using the command:
>>format long
Type:
>>doc format
for more information.
[From the MATLAB FAQ of ancient times...]

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