With gncTaxTableGetDefault.
qof_book_get_default_tax_table would have been even better but it
would have created a circular dependency between QofBook and
GncTaxTable.
First change is to ensure gncEntry rounding is consistent. Internally
calculated values in the entry are never rounded. Consumers of
gncEntry's calculated values can request them either rounded or not.
Next use a pragmatical approach for calculating values on invoices based on
the entry values: do the rounding such that we never
create an unbalanced transaction while posting
That means
- round each entry's net value before summing them in net total
- accumulate all tax totals on invoice level per tax account before rounding
and round before before summing them in a global tax total
Hopefully this will catch a few more rounding issues in this area.
A complete solution can only offered if we allow users to manually correct
tax entries. This requires changes to user interface and data format
so that's not going to happen in gnucash 3.x.
It is split into
- /libgnucash (for the non-gui bits)
- /gnucash (for the gui)
- /common (misc source files used by both)
- /bindings (currently only holds python bindings)
This is the first step in restructuring the code. It will need much
more fine tuning later on.
