Returns the argument decremented by one, throwing an exception if the result overflows a {@code long}.
@param a the value to decrement @return the result @throws ArithmeticException if the result overflows a long
See Implementation
Returns the argument decremented by one, throwing an exception if the result overflows a {@code long}.
@param a the value to decrement @return the result @throws ArithmeticException if the result overflows a long