---
title: bitwise.uand() function
description: >
  `bitwise.uand()` performs the bitwise operation, `a AND b`, with unsigned integers.
menu:
  flux_v0_ref:
    name: bitwise.uand
    parent: bitwise
    identifier: bitwise/uand
weight: 101
---

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`bitwise.uand()` performs the bitwise operation, `a AND b`, with unsigned integers.



##### Function type signature

```js
(a: uint, b: uint) => uint
```

{{% caption %}}
For more information, see [Function type signatures](/flux/v0/function-type-signatures/).
{{% /caption %}}

## Parameters

### a
({{< req >}})
Left hand operand.



### b
({{< req >}})
Right hand operand.




## Examples

- [Perform a bitwise AND operation](#perform-a-bitwise-and-operation)
- [Perform a bitwise AND operation on a stream of tables](#perform-a-bitwise-and-operation-on-a-stream-of-tables)

### Perform a bitwise AND operation

```js
import "bitwise"

bitwise.uand(a: uint(v: 1234), b: uint(v: 4567))// Returns 210 (uint)


```


### Perform a bitwise AND operation on a stream of tables

```js
import "bitwise"
import "sampledata"

sampledata.uint()
    |> map(fn: (r) => ({r with _value: bitwise.uand(a: r._value, b: uint(v: 3))}))

```

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{{% expand "View example input and output" %}}

#### Input data

| _time                | _value               | *tag |
| -------------------- | -------------------- | ---- |
| 2021-01-01T00:00:00Z | 18446744073709551614 | t1   |
| 2021-01-01T00:00:10Z | 10                   | t1   |
| 2021-01-01T00:00:20Z | 7                    | t1   |
| 2021-01-01T00:00:30Z | 17                   | t1   |
| 2021-01-01T00:00:40Z | 15                   | t1   |
| 2021-01-01T00:00:50Z | 4                    | t1   |

| _time                | _value               | *tag |
| -------------------- | -------------------- | ---- |
| 2021-01-01T00:00:00Z | 19                   | t2   |
| 2021-01-01T00:00:10Z | 4                    | t2   |
| 2021-01-01T00:00:20Z | 18446744073709551613 | t2   |
| 2021-01-01T00:00:30Z | 19                   | t2   |
| 2021-01-01T00:00:40Z | 13                   | t2   |
| 2021-01-01T00:00:50Z | 1                    | t2   |


#### Output data

| _time                | _value  | *tag |
| -------------------- | ------- | ---- |
| 2021-01-01T00:00:00Z | 2       | t1   |
| 2021-01-01T00:00:10Z | 2       | t1   |
| 2021-01-01T00:00:20Z | 3       | t1   |
| 2021-01-01T00:00:30Z | 1       | t1   |
| 2021-01-01T00:00:40Z | 3       | t1   |
| 2021-01-01T00:00:50Z | 0       | t1   |

| _time                | _value  | *tag |
| -------------------- | ------- | ---- |
| 2021-01-01T00:00:00Z | 3       | t2   |
| 2021-01-01T00:00:10Z | 0       | t2   |
| 2021-01-01T00:00:20Z | 1       | t2   |
| 2021-01-01T00:00:30Z | 3       | t2   |
| 2021-01-01T00:00:40Z | 1       | t2   |
| 2021-01-01T00:00:50Z | 1       | t2   |

{{% /expand %}}
{{< /expand-wrapper >}}