Phase of a complex number is wrongly understood to be zero by MATLAB

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Imam
Imam 2016-11-7
评论： Imam 2016-11-9
I am doing a calculation of the phase of a complex number. However, the magnitude of this number is so small (around the order of 10^-400) so that MATLAB assumes both its magnitude and phase to be zero. So, I guess one way to get the correct phase is to decrease MATLAB's smallest number. But I doubt that's impossible. Any trick to get around this?

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Walter Roberson
Walter Roberson 2016-11-7
The smallest number that MATLAB can represent numerically is about 4.94065645841247e-324 . 10^(-400) is right out for numeric work.
For higher precision you need to go for the Symbolic Toolbox.
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