underflow

A condition in which the value of a computed quantity is smaller than the smallest non-zero value that can be physically stored; usually treated as an error condition.

The error condition that results from an attempt to retrieve an item from an empty stack.

A current flowing below the surface.

To trigger the condition in which the value of a computed quantity is smaller than the smallest non-zero value that can be physically stored.

To trigger the error condition resulting from attempting to retrieve a value from an empty stack.