Should numpy.sqrt(-1) return 1j rather than nan?

Alan G Isaac aisaac at
Thu Oct 12 09:13:46 CDT 2006

On Thu, 12 Oct 2006, Greg Willden apparently wrote: 
> I'm having serious doubts about my conversion to Numpy. 

That's fine, but be sure to treat the explanations you are 
receiving with the same seriousness that you treat your 

For example, in the speed vs. correctness discussion, be 
sure to understand the problems with the word "correct".
Which have been explained.

correct != expected
when expectations lack context

Alan Isaac
(just a happy user)

Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo

More information about the Numpy-discussion mailing list