Andres Freund <and...@anarazel.de> writes: > I'm not saying we shouldn't default to our printf - in fact I think we > probably past due to use a faster float->string conversion than we > portably get from the OS - but I don't think we can default to our > sprintf without doing something about the float conversion performance.
Well, if you're unhappy about snprintf.c's performance, you could review https://commitfest.postgresql.org/19/1763/ so I can push that. In my tests, that got us down to circa 10% penalty for float conversions. More generally, I'm not averse to having our own float conversion code if someone wants to put in the effort. Performance aside, it'd be nice to eliminate cross-platform differences in float output so we could get rid of some of the Windows-specific regression result files. regards, tom lane
