Accuracy, in science, refers to how close a measurement is to the true value. foxer currency calculator implements the full precision Extended type for its computations. This format was described under the industry standard IEEE 754 specification as for giving eighteen significant digits of precision.
We take accuracy very seriously. For this reason, none of our plugins alters in any way the data provided by the Central Banks. For instance, see how exchange rates are expressed by the European Central Bank, where all currencies are quoted against the euro (base currency):
Now look at the Central Bank of Russia:
As you can see, they are expressed oppositely. For foxer, the ECB rate translates into: RUB=91.6732 while the ones from the CBR translate into EUR=1/90.4087 and UZS=1/(70.8150/10000).
We will soon cover this matter in depth in the White papers section.