[j-devel] Floating-point underflow in expt.

[Luke H. <ruk...@gm...>]

I came across this behaviour:

(expt 0 4)
> 0

(expt 0.0 4.0)
> 0.0

(expt 0 4.0)
> 0.0

(expt 0.0 4)
#<FLOATING-POINT-UNDERFLOW {A9AE3E}>

clisp and sbcl return 0.0.  Perhaps the 4 should be promoted to float
in this case?

-Luke