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Re: (expt 2 (log 0)) hangs
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From: |
Kevin Ryde |
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Subject: |
Re: (expt 2 (log 0)) hangs |
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Date: |
Tue, 07 Sep 2004 10:11:53 +1000 |
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User-agent: |
Gnus/5.110003 (No Gnus v0.3) Emacs/21.3 (gnu/linux) |
Bill Schottstaedt <address@hidden> writes:
>
> > (expt 2 (log 0))
>
> gets into an infinite loop.
No, not infinite, it's calculating 2^(2^1024), you just have to be
patient, and have a lot of ram :-).
Thanks. I fixed integer-expt to reject an exponent +/-inf. It got
there because (integer? -inf.0) => #t, which seems pretty wrong to me,
so I changed that to #f. That expt now goes to pow(), giving 0.