Dean Rasheed <dean.a.rasheed@xxxxxxxxx> writes: > The most obvious thing to do is to try to make power_var_int() choose > the same result rscale as power_var() so that the results are > consistent regardless of whether the exponent is an integer. Yeah, I think we should try to end up with that. > It's worth noting, however, that that will cause in a *reduction* in > the output rscale rather than an increase in some cases, since the > power_var_int() code path currently always chooses an rscale of at > least 16, whereas the other code path in power_var() uses the rscales > of the 2 inputs, and produces a minimum of 16 significant digits, > rather than 16 digits after the decimal point. Right. I think this is not bad though. In a lot of cases (such as the example here) the current behavior is just plastering on useless zeroes. regards, tom lane
