On Wed, 18 Mar 2015, Dominik Stadler wrote:
for a small project of mine I also needed to replace the implementation of some POI/Excel functions with different implementations.
I know that Josh did a huge amount of work on formula performance a few years ago, back when he was more involved. After that, POI is able to evaluate some very large files quite quickly. I'm not sure we'd want to go back on that by default
However.... It seems there might be one or two people interested in a much slower but slightly more accurate WRT rounding set of functions. Maybe we need to make it an option at evaluation time, and then put in these BigDecimal related functions / tweaks to functions to kick in for people who need them?
(Well, assuming we can get quite close to the Excel rounding rules, which David North has been finding to be hard to achieve in Java!)
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