From: Mathieu Bouchard <matju@...>
Date: 2000-09-24T07:10:01+09:00
Subject: [ruby-talk:5085] Re: Proposal: Add constants to Math

>>> irb(main):001:0> Math.log(-1)
>>> -Infinity

First of all, Math.log(-1) should give NaN, not -Infinity; Math.log(0) may
give -Infinity though.

>>> irb(main):003:0> Math.log(-1)
>>> Complex(0.0, 3.141592654)

Second, a the log of a float should not give a complex, for the same 
reason that 2/3 == 0.



matju