XPON

Member Of Menu: 
Real
Argument Types: 
Real
Symbol
Expression
Result Type(s): 
Real
Expression
Invertible: 
No
Valid In Expression: 
Yes
Stack Diagram: 
Real1 Real2
Symbol1 Expression2
Expression1 Expression2

This function returns the exponent of the input real value. Assuming that the real value is expressed in scientific notation (the actual format being used on the calculator is irrelevant but for the purposes of explanation, assume the value is in scientific notation) like so:

x.xxxxEyy

Then, the value returned will be yy, returning only the exponent.