Mark Dickinson wrote:
> On Tue, Feb 12, 2008 at 1:52 AM, Raymond Hettinger <[EMAIL PROTECTED]> wrote:
>
>> Also, it would be useful to have a new method, float.is_integer(). This
>> would be better than the current approach where we make the
>> test: if x == floor(x).
>>
>
> How common is this test? Given the inexact nature of floating-point
> arithmetic, checking whether a float is exactly an integer seems like
> something that one might actually want to discourage, just like comparing
> two floats for equality.
>
> Also, what about having float.is_finite, as a quicker way to spell "not
> isinf(x) and not isnan(x)"
>
> +1 on making these methods of float; they're fundamental properties.
>
> Mark
Yes, and I don't know if this was mentioned, but should add to complex also.
isfinite (complex_x):
return isfinite (x.real) and isfinite (x.imag)
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