Constant exchange rate
From ACT Wiki
Financial reporting - non-GAAP measures - exchange rates.
(CER).
A basis of calculating and disclosing financial amounts on the basis of the same foreign exchange rates in successive periods.
For example, restating prior year figures on the basis of the current year's exchange rates.
Or restating the current year's figures on the basis of the prior year's exchange rates.
Also known as a constant currency basis.
This calculation is a non-GAAP measure.