non/spire — pull request #311 by denisrosset (2014-10-19 22:37:02+00:00)
Title: Partial move of abs from Signed to IsReal. Does not compile.

Continued from #304.

I tried to move .abs to IsReal, the problem is that IsReal is not applied everywhere: for example, the Scala Numeric wrappers do not use IsReal, the vector space norm implementations have to be converted, and Complex does not implement IsReal either.

This is the WIP.