FC?

Member Of Menu: 
Test
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 operation takes a real value between 1 and 64 and returns 1 if the associated bit in the calculator flags is 0. Otherwise, the operation returns 0. The flags are unchanged by this operation.