EXP (Function)

returns the natural exponential of, i.e. eundefined, where e is Euler's number (about 2.7).

Due to rounding errors,  gives , as does every parameter with a lower value. The highest value that can be calculated is. Higher parameters give an  error, or, oddly, an   error if the parameter is 363409/4096 or above.

is quite accurate; the higest value calculated  is 524225+3200/4096, on another calculator I trust more (Wolfram Alpha for Android), the result (to the nearest 1/4096) to 524255+3165/4096. That's an absolute error of 35/4096, or a relative error of 0.0163 in a million.

is (ideally) the inverse function of.