Re: create function atof?

O kyrios mark egrapse stis Feb 20, 2004 :

> Hello,
>
> Is it possible to create a database function that mimics the C function atof?
> I'm guessing it should look something like this:
>
> create function atof(varchar) returns float
> as '??????'
> language ????
> returns null on null input;

Simply use
# select '<some float>'::text::float4;
or

create function atof(varchar) returns float language sql as 'select
$1::text::float' returns null on null input;

>
> Thanks,
>
> Mark
>
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--
-Achilleus