Theo Schlossnagle <jesus(at)omniti(dot)com> writes:
> I'm writing some extension and I have a hot code path that has a lot of double (C type) data and needs to output NUMERIC tuple data. The current methods I can find in the code to convert sprintf the double to a buffer and then invoke the numeric_in function on them. I've profile my stuff and I'm spending (wasting) all my time in that conversion. Is there a more efficient method of converting a double into a postgres numeric value?
If you're worried about micro-optimization, why are you using NUMERIC at
all? It's no speed demon.
Although you might be able to shave some cycles with a dedicated code
path for this conversion, binary to decimal is fundamentally not cheap.
regards, tom lane
In response to
pgsql-hackers by date
|Next:||From: Boszormenyi Zoltan||Date: 2010-03-01 21:40:40|
|Subject: Re: function side effects|
|Previous:||From: Tom Lane||Date: 2010-03-01 21:29:56|
|Subject: Re: function side effects |