In my opinion complex numbers with zero imaginary part should behave
#8539: Data.Complex shouldn't use default implementation of (**) -------------------------------------+------------------------------------- Reporter: jjaredsimpson | Owner: Type: bug | Status: patch Priority: low | Milestone: Component: Prelude | Version: 7.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: Incorrect result | Difficulty: Easy (less than 1 at runtime | hour) Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------- Comment (by Scott Turner): like simple real numbers in all such functions. This is a naive understanding of the complex numbers. They are not a plain extension of the real numbers; they are missing the linear ordering. So you can't say that log(0)= -infinity as you do with the real numbers, because there are additional ways in which to approach 0. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8539#comment:13 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler