[Numpy-discussion] Integers to integer powers, let's make a decision

[Charles R Harris]

Hi All,

I've made a new post so that we can make an explicit decision. AFAICT, the
two proposals are


   1. Integers to negative integer powers raise an error.
   2. Integers to integer powers always results in floats.

My own sense is that 1. would be closest to current behavior and using a
float exponential when a float is wanted is an explicit way to indicate
that desire. OTOH, 2. would be the most convenient default for everyday
numerical computation, but I think would more likely break current code. I
am going to come down on the side of 1., which I don't think should cause
too many problems if we start with a {Future, Deprecation}Warning
explaining the workaround.

Chuck
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