Re: pgsql: Have numeric 0 ^ 4.3 return 1, rather than an error, and have 0 ^

Tom Lane wrote:
> momjian@postgresql.org (Bruce Momjian) writes:
> > Have numeric 0 ^ 4.3 return 1, rather than an error, and have 0 ^ 0.0
> > return 1, rather than error.
>
> This is wrongly described, and the implementation is still not correct
> either, because it should throw an error for negative exponents.
> Would you please *read* that wikipedia page you keep citing?
> http://en.wikipedia.org/wiki/Exponentiation#Powers_of_zero

I think this is fixed in the version I just committed:

    test=> select 0 ^ (-1);
    ERROR:  invalid argument for power function
    test=> select 0 ^ (-1.0);
    ERROR:  invalid argument for power function

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  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
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