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Topic: fprintf output: What does -0 mean?
Replies: 6   Last Post: Jan 27, 2014 11:17 AM

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Paul

Posts: 263
Registered: 2/23/10
fprintf output: What does -0 mean?
Posted: Jan 24, 2014 11:30 AM
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I get a negative zero when printing a set of coefficients of lasso regression:

>> format longg
>> fprintf('%e\n',B(:,86))

0.000000e+00
-0.000000e+00
-0.000000e+00
-1.367172e-01
0.000000e+00
-6.460915e-02
-1.078923e-10

I can't provide simple code to do duplicate. A simply cut/paste of the above text to assign into a variable x does not yield the same fprintf results.

What would cause the negative zero? How should it be interpretted?



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