signum(0,abs(zero),0) gives 1

Question:signum(0,abs(zero),0) gives 1

Posted: _Maxim_ 729

September 13 2017

signum(0, abs(x), 0);
                       signum(0, |x|, 0)

signum(0, abs(tan(Pi/5)-sqrt(5-2*sqrt(5))), 0);
                               1

The second one should give 0 or return unevaluated.

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