The result type is an integer with bits equal to the maximum bits of its arguments. If at least one of the arguments is signed, the result is a signed number. If an argument is a floating-point number, it is cast to Int64.
Takes any integer and converts it into [binary form](https://en.wikipedia.org/wiki/Binary_number), returns the value of a bit at specified position. The countdown starts from 0 from the right to the left.
For example, the number 43 in base-2 (binary) numeral system is 101011.
Query:
```sql
SELECT bitTest(43, 1)
```
Result:
```text
┌─bitTest(43, 1)─┐
│ 1 │
└────────────────┘
```
Another example:
Query:
```sql
SELECT bitTest(43, 2)
```
Result:
```text
┌─bitTest(43, 2)─┐
│ 0 │
└────────────────┘
```
## bitTestAll {#bittestall}
Returns result of [logical conjuction](https://en.wikipedia.org/wiki/Logical_conjunction) (AND operator) of all bits at given positions. The countdown starts from 0 from the right to the left.
-`index1`, `index2`, `index3`, `index4`– positions of bit. For example, for set of positions (`index1`, `index2`, `index3`, `index4`) is true if and only if all of its positions are true (`index1` ⋀ `index2`, ⋀ `index3` ⋀ `index4`).
**Returned values**
Returns result of logical conjuction.
Type: `UInt8`.
**Example**
For example, the number 43 in base-2 (binary) numeral system is 101011.
Query:
```sql
SELECT bitTestAll(43, 0, 1, 3, 5)
```
Result:
```text
┌─bitTestAll(43, 0, 1, 3, 5)─┐
│ 1 │
└────────────────────────────┘
```
Another example:
Query:
```sql
SELECT bitTestAll(43, 0, 1, 3, 5, 2)
```
Result:
```text
┌─bitTestAll(43, 0, 1, 3, 5, 2)─┐
│ 0 │
└───────────────────────────────┘
```
## bitTestAny {#bittestany}
Returns result of [logical disjunction](https://en.wikipedia.org/wiki/Logical_disjunction) (OR operator) of all bits at given positions. The countdown starts from 0 from the right to the left.
