# TESTOFF

The TESTOFF function tests a specified bit in a binary number item to see whether it is off.

- Syntax:
TESTOFF ( single-binary-number-expression , single-integer-expression )

- Meaning:
- TESTOFF ( binary_number_to_test , bit_to_test )
- Returns:
- "True" or "false"

The value of `bit_to_test` specifies
which bit of `binary_number_to_test` should be tested for
the value 0. If `bit_to_test` has the value 1, it refers
to the leftmost bit of `binary_number_to_test`.

The TESTOFF function returns "true" if the specified bit is off and returns "false" if the specified bit is on.

If `bit_to_test` is less
than one or greater than the number of bits of `binary_number_to_test`, TESTOFF returns
"false".

## Examples

- TESTOFF (A, 16)
Assume

**A**is the two-byte binary value of "1", which is all zeros except for bit**16**. The binary representation of the value in**A**is 0001.This example returns "false".

- TESTOFF (A, 20)
Returns "false" because bit

**20**does not exist.