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

• double and numeric conversion at 2010-03-01 20:04:29 from Theo Schlossnagle

Responses

• Re: double and numeric conversion at 2010-03-02 14:37:12 from Theo Schlossnagle

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