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- All Rates will be expressed in terms of multiplication.
- you will never do division on rates to translate currency
- so if you have 5.00 us and
- you wanted to convert to CAD
- you would never take the CAD to usd rate and invert
- you would just find the usd to cad rate
- when you save a rate its reciprocal pair will be saved
- usd to CAD 1.28 will save the reciprocal rate .7785 will be save
- you will need to setup both currency pairs if you want convert bi directional currency transactions
When you create a currency rate the inversion of the rate is added if the reciprocal pair exists. So you can not have different rates for the same currency pair in the opposite direction.
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We have also tested this with actual closing prices for currencies in numerous test cases and believe this is the appropriate stance.
Test on closing prices - real time prices will be impossible to test - constantly changing.
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