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abs(0 + 0i) evaluates to NaN #328

auscompgeek opened this Issue Apr 22, 2015 · 1 comment


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auscompgeek commented Apr 22, 2015

Attempting to evaluate abs(0 + 0i) returns NaN. This appears to be an unnoticed edge case in avoiding overflows when calculating the absolute value of a complex number.

abs(0 + 0i) should, obviously, return 0.

FSMaxB added a commit to FSMaxB/mathjs that referenced this issue Apr 22, 2015

Fix Bug josdejong#328 abs(0+0i) evaluates to NaN
This is a quick fix. This might need a better solution though (
numerical instabilities still remain ).

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FSMaxB commented Apr 22, 2015

I fixed the problem. It was a division by zero. I'll make a pull request.

@josdejong josdejong closed this in 95c4e33 Apr 22, 2015

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